Omega Engineering CN8240 & CN8260 User Guide

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CN8240 & CN8260 Series Communications & Options www.omega.com e-mail: info@omega.com omega.com ® ® CN8240 & CN8260 SERIES Communications & Options Guide User’s Guide TM CN8240 & CN8260 Series Communications & Options i It is the policy of OMEGA to comply with all worldwide safety and EMC/EMI regulations that apply. OMEGA is constantly pursuing certification of its products to the European New Approach Directives. OMEGA will add the CE mark to every appropriate device upon certification. The information contained in this document is believed to be correct, but OMEGA Engineering, Inc. accepts no liability for any errors it contains, and reserves the right to alter specifications without notice. WARNING: These products are not designed for use in, and should not be used for, patient-connected applications. omega.com ® ® OMEGAnet ® On-Line Service Internet e-mail www.omega.com info@omega.com Benelux: Postbus 8034, 1180 LA Amstelveen The Netherlands Tel: (31) 20 6418405 FAX: (31) 20 6434643 Toll Free in Benelux: 0800 0993344 e-mail: nl@omega.com Czech Republic: Rudé armády 1868, 733 01 Karviná 8 Tel: 420 (69) 6311899 FAX: 420 (69) 6311114 Toll Free: 0800-1-66342 e-mail: czech@omega.com France: 9, rue Denis Papin, 78190 Trappes Tel: (33) 130-621-400 FAX: (33) 130-699-120 Toll Free in France: 0800-4-06342 e-mail: france@omega.com Servicing Europe: USA and Canada: Sales Service: 1-800-826-6342 / 1-800-TC-OMEGA ® Customer Service: 1-800-622-2378 / 1-800-622-BEST ® Engineering Service: 1-800-872-9436 / 1-800-USA-WHEN ® TELEX: 996404 EASYLINK: 62968934 CABLE: OMEGA USA: ISO 9001 Certified One Omega Drive, Box 4047 Stamford CT 06907-0047 Tel: (203) 359-1660 FAX: (203) 359-7700 e-mail: info@omega.com Servicing North America: For immediate technical or application assistance: Mexico: Tel: (001) 800-826-6342 FAX: (001) 203-359-7807 En Espan ~ ol: (001) 203-359-7803 e-mail: espanol@omega.com Germany/Austria: Daimlerstrasse 26, D-75392 Deckenpfronn, Germany Tel: 49 (07056) 3017 FAX: 49 (07056) 8540 Toll Free in Germany: 0800 TC-OMEGA SM e-mail: germany@omega.com United Kingdom: ISO 9002 Certified One Omega Drive River Bend Technology Centre Northbank, Irlam Manchester M44 5EX England Tel: +44 (0)161 777 6611 FAX: +44 (0)161 777 6622 Freephone: 0800-488-488 e-mail: sales@omega.co.uk Canada: 976 Bergar Laval (Quebec) H7L 5A1 Tel: (514) 856-6928 FAX: (514) 856-6886 e-mail: info@omega.ca TM CN8240 & CN8260 Series Communications & Options ii Table of Contents For information and instructions related to basic operations, refer to the CN8240/CN8260 operator’s manual supplied with your controller. Option Wiring Diagrams Alarm Output . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 24 Volt DC Alarm Output . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 Relay, N.O. Alarm Output . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 RS-232 Communications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 RS-485 Communications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 Transducer Excitation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 Auxiliary Output . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Remote Analog Setpoint . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Guide to Digital Communications Remote Communications Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 Omega+ Protocol . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 • Message Formats . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-8 • Sample Commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9, 10 • Request Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11-13 • Response Messages. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13-15 • Communications Parameter List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15-21 • Auxiliary Commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22, 23 • Notes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24-26 1 2 3 1 1 12 13 23 24 RCV B(-) XMT A(+) SIG GND SIG GND RS 232 RS 485 RCV XMT SIG GND CN8240 & CN8260 Series Communications & Options 1 Option -C2: RS-232 (one-to-one) Communications Option Description: Provides a one-to-one connection between the controller and an RS-232 port. Computers, PLCs, or dumb terminals may be used to set and access controller data. Load 5 amp fuse Option Description: NO (Normally open) relay contact is closed when either alarm is active. The relay life is greater than 100,000 operations at 5 operations per second switching full load. *Connect load and supply voltage per the following table: Relay, N.O. Alarm Output Option -AL1, -AL2: Relay, N.O. Alarm Output Load 5 amp fuse Supply voltage* Supply voltage* OUTPUT 2 N.O. C N.O. 2 3 12 13 14 15 16 17 18 23 24 8 9 1 0 19 2 0 21 22 4 5 6 7 N.O. C N.O. C ALARM 1 L1 L2 ALARM 2 120-250 V 50-60 Hz + – + RS-232 Communications Load Type 5 A Voltage Limit Resistive dc 30 Vdc Inductive ac (L/R = 7 ms) 20 Vdc Resistive ac 250 Vac Inductive ac (pF = 0.4) 150 Vac Motor, ac, 1/6 hp 250 Vac Tungsten Lamp, 360 W 120 Vac CN8240 & CN8260 Series Communications & Options 2 RS-485 Communications 1 2 3 1 1 12 13 14 23 24 4 RCV B(-) XMT A(+) SIG GND SIG GND RS 232 RS 485 Option Description: Provides one-to-many communications. Terminate the controller furthest from the computer by either connecting a 120-ohm, 1/4-watt resistor between ter- minals 23 and 24 or using jumper 1 located on the underside of the communications board as shown above. JMP 1 B(-) A(+) SIG GND Option -C4: RS-485 (one-to-many) Communications Transducer Power Supply Options -XP1, -XP2, -XP3, -XP4: Transducer Power Supply + – NOTE: FOR 2 WIRE RTD JUMPER 18 & 20 3 12 13 14 15 16 17 18 8 9 1 0 19 2 0 21 22 4 5 6 7 T/C + – RTD MA MV V SENSOR INPUT Option Description: The transducer power supply option provides power to remote transducers. The transducer outputs, in turn, provide a signal to the controller input which can be scaled in the appropriate engineering units. Option -XP1: 15 Vdc Option -XP2: 12 Vdc Option -XP3: 10 Vdc Option -XP4: 5 Vdc All options will provide at least 20 mA. The transducer circuitry is thermally protected from short circuits. 0 to1 volt out = 0 to100% RH (6 to 30 Vdc input) Option Description: Remote setpoints use either voltage or current inputs, depending on the specified option: Option -DIC: Switch Input Closed Option -RSP4: 0-5 Vdc Option -RSP5: 1-5 Vdc Option -RSP6: 0-20 mA Option -RSP7: 4-20 mA The input signal is scalable in the Remote Analog Setpoint Menu. Activation of the analog setpoint causes the F1 indicator to illuminate. For current (mA) options, the input resistance is 255 ohms. For voltage input options, the input resistance is greater than 10K ohms. Note: Switch input option -DIC is active when switch is closed. The digital input option menu controls the programming of this switch. *Ground shield at one end, taking care not to run wires next to power circuitry. Maximum length will be determined by noise performance. CN8240 & CN8260 Series Communications & Options 3 + – NOTE: FOR 2 WIRE RTD JUMPER 18 & 20 2 3 12 13 14 15 16 17 18 23 24 8 9 1 0 19 2 0 21 22 4 5 6 7 T/C + – RTD MA MV V SENSOR INPUT Option -PVSV1 (4-20 mA) Option PVSV2 (0-5 V) Connect jumper between pins 16 and 17 for option -PVSV2 Process Output Options -PVSV1, -PVSV2: Process Output Option Description: The Setpoint Variable or Process Variable is transmitted to a remote device (chart recorders, indicators, data recorders, computers, process controllers, etc.) with 1 of 2 different interfaces: Option -PVSV1: 4-20 mA Option -PVSV2: 0-5 V The output signal is scalable in the Auxiliary Output Menu. Multiple remote indicators may be driven by the controller. For current (mA) options, the remote indicators are connected in series. The sum of the input resistance for all remote indicators must be less than 400 ohms. For voltage options, the remote indicators are connected in parallel. The sum of the currents for all remote indicators must be less than 10 mA. Remote Setpoint Options Options -DIC, -RSP4, -RSP5, -RSP6, -RSP7: Remote Setpoint – 14 15 16 17 18 8 9 19 21 22 4 5 6 7 T/C – RTD MA MV V SENSOR INPUT 1 12 13 14 15 16 17 24 Enable Switch Enable Switch 1 12 13 14 15 16 17 24 CW 10K Switch input only Remote analog setpoint (voltage/current input) Remote analog setpoint (potentiometer with enable switch) } 0-5 V/1-5 V/0-10 V 0-20 mA/4-20 mA ! Options -RSP4, -RSP5, -RSP6, -RSP7 Option -DIC CN8240 & CN8260 Series Communications & Options 4 CN8240/CN8260 Series Controllers with Digital Communications Option omega.com ® ® CN8240 & CN8260 Series Communications & Options 5 Digital Communications Option This method allows bidirectional data transfer via a three-conductor cable consisting of signal ground, receive input and transmit output. It is recommended for communication distances less than 50 feet between the computer termi- nal and the instrument. Note: Multiple instruments cannot be connected to the same port. The RS232 port is optically isolated to eliminate ground loop problems. Typically, “Data Out” of the computer/ terminal connects to the “RCV” terminal. “Data In” connects to the “XMT” terminal. If shielded cable is used, it should be connected to the frame ground at one end only. Signal ground is to be connected at appropriate ground terminals (refer to wiring diagram on bottom of this page). RS-485 The RS485 multipoint capability allows up to 32 controllers to be connected together in a half-duplex network or up to 100 controllers with an appropriate communications repeater. This method allows bidirectional data transfer over a twisted pair cable. The twisted pair cable is a transmission line; therefore, terminating resistors are required at the most distant ends of the line to minimize reflections (typically 120 ohms at each end). The RS485 circuit is fully optically isolated, eliminating ground loop problems. Parallel drops from the transmission lines should be kept as short as possible; however, the line may be daisy-chained at each controller. The polarity of the line is important and each device will specify an “A” (+) and “B” (-) connection. Three remote communications options are available for the CN8240/CN8260 which allow interfacing to remote devices utilizing the most common industry standards: RS232 and RS485. Call factory for a recommended RS485 converter. Remote Communications Options RS-232 Figure 1. Wiring diagram for digital communications. 1 2 3 1 1 12 13 14 15 16 23 24 4 5 6 RCV B(-) XMT A(+) SIG GND SIG GND RS 232 RS 485 DIGITAL COMMUNICATIONS Message Code Value = Decimal Value 00 0 + 0 = 00 99 90 + 9 = 99 A0 100 + 0 = 100 A2 100 + 2 = 102 B8 110 + 8 = 118 P5 250 + 5 = 255 CN8240 & CN8260 Series Communications & Options 6 Omega+ Protocol The Omega+ Protocol provides an easy way to query and modify controller parameters using a personal computer and the optional digital communications option of the 18C/25C. In this manual, the word “host” refers to the personal computer that’s communicating with the controllers in the serial link, and the word “slave” refers to the controllers themselves. All transactions between the host and the slaves are done with messages consisting of only printable ASCII charac- ters. There are only two primary types of messages: Requests and Responses. Messages coming from the host are called requests and messages coming from the slaves are called responses. With the exception of a broadcast request, for every request sent from the host, the slave will send back a response. If a slave does not respond within 100 milliseconds, then the request can be considered lost. A broadcast request is a request having an ID of ‘00’ (see Message Formats below). It is used to address all slaves on the network. All slaves on the network will perform the actions requested in a broadcast message. However, a response message will not be returned. Therefore, the host can only broadcast Write or Auxiliary Command Requests. All slaves will ignore all Read Broadcast Requests. Digital Communications Option Message Formats All Omega+ messages adhere to the general format of: [START CHAR][ID][ZONE][TYPE][PARAM][ERROR][DATA][CHKSUM][END CHAR] START CHAR This is a single character which designates the start of the message. For a Request message, this character is the ASCII ‘$’ and for a Response message, this character is the ASCII ‘%’. ID This is a two-character ID identifying the receiving controller. Controller IDs go from 1-255 inclusively and all slaves in the network must have unique IDs. The ID number of ‘00’, when used in a request, designates a broadcast mes- sage that is used to address all controllers in the network. See the section Request Message for an explanation of the broadcast message. In order to represent 255 with just two ASCII characters, a number system known as the Message Code Numbering System is used. In this system, the most significant digit is represented with the numbers 0-9 and the letters A-Z and the least significant digit is represented with the numbers 0-9. The numbers 0-9 have the same values as their decimal counterparts and the letters A-Z have the values of 100 - 50 inclusively in increments of 10. Zone This is a two character ID identifying the Zone number in multi-zone capable controllers. For the 18C/25C, this num- ber must be 01. Example: CN8240 & CN8260 Series Communications & Options 7 TYPE character Message Type R Read Request or Read Response Returning a Positive Result r Read Response Returning a Negative Result W Write Positive Value Request and Response w Write Negative Value Request and Response A Auxiliary Command Digital Communications Option For further information, see following sections on the different message types. Type This is a single character identifying the type of message. The following table lists the type characters for all messages. ERROR Code Description 0 No error. 1 Framing error. 2 Hardware error. 3 Parity error. 4 Bad character in the TYPE field. 5 Bad message. Message cannot be understood. 6 Bad checksum. The checksum received did not match the checksum of the message. 7 Bad zone ID. 8 Bad auxiliary command ID. The auxiliary command is not supported in this controller. 9 Bad parameter ID. The parameter is not supported in this controller. A Bad data. Bad representation in the data field or data is out of range. B Attempt to write to a read only parameter. C Cannot write to a parameter because it’s in use. PARAM This is a two character, message specific, parameter ID. For a Read/Write Request or Response message, this ID identifies the controller parameter. For an Auxiliary Command Request or Response message, this ID specifies the command. CN8240 & CN8260 Series Communications & Options 8 Digital Communications Option Numeric Value ASCII Representation 3 3.0000 000003 003.00 100 100.00 0100.0 000100 3.2 003.20 0003.2 Examples of valid numeric representations for a 6 character data field: Numeric Value Bad ASCII Representation Why? 3 BBBBB3 Leading blanks are not allowed. 3.0BBBB Trailing blanks are not allowed. 3.2 -3.20000 ‘-’ is not allowed. Examples of invalid numeric representations for 6 character data field: (B represents a blank, or a space, character) CHKSUM This is a two character Message Code Numbering System, representing the sum of all the ASCII values of all the characters (excluding the START, CHAR, the END CHAR, and the CHKSM themselves) in the message. The sum is computed using the following formula: CHKSM = SUM(All Message Characters)%256 % represents the modulus operator. END CHAR This is a single character designating the end of the message. For all messages, the character used is <CR>, the carriage return. CN8240 & CN8260 Series Communications & Options 9 READ RESPONSE FROM CONTROLLER READ COMMAND TO CONTROLLER Controller ID Read Command Checksum Start of Message Zone Number Parameter Number End of Message $0101R01B7<CR> Controller ID Read Command Data Checksum Start of Message Zone Number Parameter Number End of Message %0101R0502.0000J7<CR> Digital Communications Option WRITE COMMAND TO CONTROLLER Controller ID Write Command Data Start of Message Zone Number Parameter Number End of Message $0101W1025.000G7<CR> Checksum CN8240 & CN8260 Series Communications & Options 10 WRITE RESPONSE FROM CONTROLLER Controller ID Write Command No Error Checksum Start of Message Zone Number Parameter Number End of Message %0101W090H8<CR> AUXILIARY RESPONSE FROM CONTROLLER AUXILIARY COMMAND TO CONTROLLER Controller ID Auxiliary Command Data Start of Message Zone Number Parameter Number End of Message $0101A020.0000000067<CR> Controller ID Auxiliary Command No Error Checksum Checksum Start of Message Zone Number Parameter Number End of Message %0101A020E9<CR> Digital Communications Option CN8240 & CN8260 Series Communications & Options 11 Digital Communications Option The Read Request: The Read Request is used to query parameter values and it has the following message format: [START CHAR][ID][ZONE][TYPE][PARAM][CHKSUM][END CHAR] Field Description: TYPE Must contain the uppercase letter ‘R’. Request Messages are sent from the host to the slaves. Each request will have an ID identifying the intended recipient of the request. If the ID is ‘00’ (zero), then the request is a broadcast message. All slaves will perform the action requested in the broadcast request. However, a response message will not be returned. Therefore, it only makes sense to send Write or Auxiliary Command Requests as broadcast requests. There are three types of Request Messages: Read, Write, and Auxiliary Commands. Request Message Description $Ø1Ø1RØ5C1<CR> Queries the value of the Process Variable of Controller #1. $Ø1Ø1RØ9C5<CR> Queries the value of the EEPROM Setpoint 1 of Controller #1 $Ø2Ø1RØ9C6<CR> Queries the value of the EEPROM Setpoint 1 of Controller #2. END CHAR CHKSUM PARAM TYPE ZONE ID START CHAR *Examples of the responses to these requests are given in later sections on Response Messages. Request Message Description $Ø1Ø1WØ91Ø.123G7<CR> Change both the RAM and EEPROM copies of Setpoint #1 in controller #1 to the value of 10.123 $Ø1Ø1w1Ø1Ø.123J1<CR> Change only the RAM copy of setpoint #1 in controller #1 to the value of -10.123 (notice the lowercase ‘w’). END CHAR CHKSUM DATA PARAM TYPE ZONE ID START CHAR CN8240 & CN8260 Series Communications & Options 12 Digital Communications Option The Write Request: The Write Request is used to modify parameter values and it has the following message format: [START CHAR][ID][ZONE] [TYPE][PARAM][DATA][CHKSUM][END CHAR] Field Description: TYPE This field must contain one of the following two characters. W – Value in DATA is a positive value. w – Value in DATA is a negative value. DATA A six-character ASCII representation of a numeric value. CN8240 & CN8260 Series Communications & Options 13 Request Message Description $Ø1Ø1AØ1XXXXXXXXXXL2<CR> Tell controller #1 to load all parameters with their defaults. The 10 X’s are padding characters. $Ø2Ø1AØ2ØØØ1.ØØØØØ69<CR> Tell controller #2 to perform a low RTD calibration. END CHAR CHKSUM DATA PARAM TYPE ZONE ID START CHAR Digital Communications Option The Auxiliary Command Request: The Auxiliary Command Request is used to issue commands to the controllers and it has the following message format: Field Description: TYPE This field must contain the uppercase letter ‘A’ DATA A ten-character ASCII representation of a numeric value or 10 alphanumeric ASCII characters. Response Messages: Response Messages are replies to the requests sent from the host. For each request received, the slave will reply back with a response. For all requests, the Omega+ Protocol specifies a maximum response time of 100 milliseconds. If the controller does not start responding within 100 milliseconds after the last request character is received, that request can be considered lost. See Figure 2 below. There are three types of Response Messages: Read, Write, and Auxiliary Commands. Figure 2. Maximum Time Interval Between Host Request and Slave (Controller) Response. Request Message Response Message 100 ms max. CN8240 & CN8260 Series Communications & Options 14 Request Message Description %Ø1Ø1RØ5Ø21.123K8<CR> The value of the Process Variable is 21.123 Degrees C. %Ø2Ø1R1Ø1G7<CR> A serial transmission has occurred: Framing Error %Ø1Ø1rØ9Ø21.ØØØN8<CR> The value of the EEPROM setpoint #1 is -21 Degrees C (notice the lowercase ‘r’). END CHAR CHKSUM DATA STATUS PARAM TYPE ZONE ID START CHAR Digital Communications Option The Read Response: The Read Response will be sent in response to a Read Request. Some examples: Request Message Description %Ø1Ø1WØ93I1<CR> A serial transmission error has occurred: Parity error. Write failed. %Ø1Ø1w1ØØK2<CR> RAM copy of setpoint #1 modified successfully. END CHAR CHKSUM STATUS PARAM TYPE ZONE ID START CHAR The Write Response: The Write Response will be sent in response to a Write Request. Some examples: CN8240 & CN8260 Series Communications & Options 15 Request Message Description %Ø1Ø1AØ1ØXXXXXXXXXXØ4<CR> Default load all parameters has started. %Ø2Ø1AØ2ØØ.ØØØØØØØØB6<CR> RTD low calibration on controller #2 has started. END CHAR CHKSUM DATA STATUS PARAM TYPE ZONE ID START CHAR Digital Communications Option The Auxiliary Command Response: The Auxiliary Command Response will be sent in response to an Auxiliary Command Request. Some examples are: Table 1. Communications Parameter List (Omega+ Protocol) Number Name Read Write Data Field Value 1 Controller Type X 0 3 2 Software Version X 0 3 Communications Version X 0 4 Status Byte X 0 This field contains the ASCII representation of an 8-bit value in which the bit assignments are as follows (starting from the least significant bit): X Process Input Error X RAS Error 0 Always Zero X Loop Break X Alarm 1 Active X Alarm 2 Active 0 Always Zero 0 Always Zero If a bit at a location marked as “X” is set, then the condition is TRUE. For example, a “48.000” in the data field means that both alarm 1 and alarm 2 are active and everything else is FALSE. CN8240/CN8260 Parameter Codes “X”s mark parameters that are supported by the CN8240 and CN8260 and “O”s indicate parameters that are not supported. CN8240 & CN8260 Series Communications & Options 16 Digital Communications Option Table 1. Continued Number Name Read Write Data Field Value 5 Process Value X 0 6 Operating Mode X X 1 - Manual 2 - Standby 3 - Normal (automatic) 4 - Initiate Autotune 5 - Recipe Run 6 - Recipe Hold 7 Access Level X X 1 - Lockout 2 - Setpoint 3 - Setpoint Plus 4 - User 5 - Configuration 6 - Factory 8 Contact/Digital Input State X 0 0 - Switch Open 1 - Switch Closed 9 Setpoint, RAM, EEPROM X X 10 Setpoint, RAM Only X X 11 Second Setpoint, RAM, EEPROM X X 12 Second Setpoint, RAM only X X 13 Remote Analog Setpoint X 0 14 Recipe Setpoint X 0 16 Output 1 Percentage X 0 17 Output 2 Percentage X 0 18 Manual Control Output 1 Percentage X X 19 Manual Control Output 2 Percentage X X 20 Output 1 Deadband X X 21 Output 1 Hysteresis X X 22 Output 1 Proportional X X Band 23 Output 2 Proportional X X Band 30 Rate (Derivative) Value X X 32 Reset (Integral) Value X X 34 Manual Reset X X (Integral) Value 37 Output 2 Deadband X X 38 Output 2 Hysteresis X X CN8240 & CN8260 Series Communications & Options 17 Digital Communications Option Table 1. Continued Number Name Read Write Data Field Value 39 Autotune Damping X X 1 - Low 2 - Normal 3 - High 40 Recipe Option X X 0 - Disabled X X 1 - Single Step X X 2 - Multi-Step 41 Single-Setpoint X X Ramp Time 42-49 Ramp Times 1-8 X X 50-57 Ramp Events 1-8 X X 0 - Disabled 1 - Event 1 On 2 - Event 1 Off 3 - Event 2 On 4 - Event 2 Off 58-65 Soak Levels 1-8 X X 66-73 Soak Times 1-8 X X 74-81 Soak Events 1-8 X X 0 - Disabled 1 - Event 1 On 2 - Event 1 Off 3 - Event 2 On 4 - Event 2 Off 82 Recycle Number X X 83 Holdback Band X X 84 Termination State X X 0 - Last Setpoint 1 - Default Setpoint 2 - Recipe to Standby Mode 85 Power Fail Resume X X 1 - Resume Off Enable 2 - Resume On 86 Input Bias X X 87 Input Low Scale X X 88 Input High Scale X X 89 Lower Setpoint Limit X X 90 Upper Setpoint Limit X X 91 Input Filter X X CN8240 & CN8260 Series Communications & Options 18 Digital Communications Option Table 1. Continued Number Name Read Write Data Field Value 92 Input Type X X 0 - B Thermocouple 1 - C Thermocouple 2 - E Thermocouple 3 - J Thermocouple 4 - K Thermocouple 5 - N Thermocouple 6 - NNM Thermocouple 7 - R Thermocouple 8 - S Thermocouple 9 - T Thermocouple 10 - Platinel II Thermocouple 11 - RTD (Integer) 12 - RTD (Decimal) 13 - 0-20 mA 14 - 4-20 mA 15 - 0-10 mV 16 - 0-50 mV 17 - 0-100 mV 18 - 10-50 mV 19 - 0-1 V 20 - 0-5 V 21 - 0-10 V 22 - 1-5 V 94 Output 1 Type X X 1 - Inactive/Disabled 2 - PID 4 - On/Off 95 Output 1 Action X X 1 - Direct 2 - Reverse CN8240 & CN8260 Series Communications & Options 19 Digital Communications Option Table 1. Continued Number Name Read Write Data Field Value A2 Output 1 Cycle Time X X A3 Output 1 Low Limit X X A4 Output 1 High Limit X X A5 Output 2 Type X X 1 - Inactive/Disabled 2 - PID 4 - On/Off A6 Output 2 Action X X 1 - Direct 2 - Reverse B3 Output 2 Cycle Time X X B4 Output 2 Low Limit X X B5 Output 2 High Limit X X B6 TC/RTD Decimal Position X X B7 Linear Decimal Position X X B8 Display Filter X X B9 Display Units X X 1 - Fahrenheit 2 - Celsius 3 - Kelvin C1 Display Blanking X X C2 Alarm 1 Action 1- Off 2 - Normal 3 - Latched 4 - Event C3 Alarm 1 Operation X X 1- Process High 2 - Process Low 3 - Deviation High 4 - Deviation Low 5 - Normal Band 6 - Inverse Band C4 Alarm 1 Delay X X C5 Alarm 1 Inhibit X X C6 Alarm 1 Process Setpoint X X C7 Alarm 1 Deviation Setpoint X X C8 Alarm 2 Action X X 1 - Off 2 - Normal 3 - Latched 4 - Event C9 Alarm 2 Operation X X 1 - Process High 2 - Process Low 3 - Deviation High 4 - Deviation Low 5 - Normal Band 6 - Inverse Band CN8240 & CN8260 Series Communications & Options 20 Digital Communications Option Table 1. Continued Number Name Read Write Data Field Value D0 Alarm 2 Delay X X D1 Alarm 2 Inhibit X X D2 Alarm 2 Process Setpoint X X D3 Alarm 2 Deviation Setpoint X X D4 Communications Protocol X 0 1 - Omega + D5 Communications ID X X D6 Baud Rate X X 0 - 75 1 - 150 2 - 300 3 - 600 4 - 1200 5 - 2400 6 - 4800 7 - 9600 D7 Data Format X X 0 - 7-0-1 1 - 7-E-1 2 - 7-N-2 3 - 7-0-2 4 - 7-E-2 5 - 8-N-1 6 - 8-0-1 7 - 8-E-1 8 - 8-N-2 D8 Communications Transmit Delay X X E1 Output 1 Failsafe % X X E2 Output 2 Failsafe % X X E3 Loop Break Time X X E4 Highest Reading X X E5 Lowest Reading X X E8 Option Selection X 0 1 - Comm Option E9 TC Zero Calibration X X F0 TC Span Calibration X X F1 RTD Zero Calibration X X F2 RTD Span Calibration X X F3 Low-Voltage Zero Calibration X X F4 Low-Voltage Span Calibration X X F5 High-Voltage Zero Calibration X X CN8240 & CN8260 Series Communications & Options 21 Digital Communications Option Table 1. Continued Number Name Read Write Data Field Value F6 High-Voltage Span Calibration X X F7 Current Zero Calibration X X F8 Current Span Calibration X X G1 Auxiliary Output Variable X X G2 Auxiliary Output Scale Low X X G3 Auxiliary Output Scale High X X G5 RAS Scale Low X X G6 RAS Scale High X X G7 Contact/Digital Switch X X 1 - Disabled 2 - Second Setpoint Select 3 - Standby Select 4 - Run/Hold Switch H2 Autotune State X 0 0 - Success 1 - Aborted 2 - Error: No PID Output 3 - Error: No Deviation 4 - Error: No Output 5 - Error: Timed out 6 - Error: Bad Tune 7 - Waiting for PV to settle 8 - Reverse Tune In Progress 9 - Direct Tune In Progress H3 Recipe State X 0 H5 Current Recipe Statement X 0 H6 Active Setpoint X X H7 Resume Exhaustion Flag X 0 H8 LED Status Indicator X 0 H9 RTD Decimal Zero Calibration X X I0 RTD Decimal Span Calibration X X I1 1-5 V, 0-10 V Zero Calibration X X I2 1-5 V, 0-10 V Span Calibration. X X I3 10-050 mV, 0-100 mV Zero Calibration X X I4 10-50 mV, 0-100 mV Span Calibration X X CN8240 & CN8260 Series Communications & Options 22 Auxiliary Commands: Command: Load Parameter Defaults Parameter #: 01 Description Restore all menu parameters to their default values. Request Data Field: Ignored. Response Data Field: Ignored. Command: Perform Process Low Calibration Parameter #: 02 Description: Performs a Low Calibration. The data field in the request message specifies the process. Make sure the prerequisite for the calibration is satisfied before issuing a calibration command. For instance, the RTD calibration command must only be used when the input sensor type is chosen as RTD or RTD w/ Decimal. Digital Communications Option CN8240 & CN8260 Series Communications & Options 23 Request Data Fields: A 10-character ASCII representation of a numeric value specifying what to calibrate. 0 - Thermocouple 1 - RTD, Resistive Thermal Device 2 - Linear 3 - RAS, Remote Analog Setpoint Response Data Field: Ignored. Command: Perform Process High Calibration Parameter #: 03 Description: Performs a High Calibration. The data field in the request message specifies the process. Make sure the prerequisite for the calibration is satisfied before issuing a calibration command. For instance, the RTD calibration command must only be used when the input sensor type is chosen as RTD or RTD w/ Decimal. Request Data Field: A 10-character ASCII representation of a numeric value specifying what to calibrate. 0 - Thermocouple 1 - RTD, Resistive Thermal Device 2 - Linear 3 - RAS, Remote Analog Setpoint Command: Retrieve Display Parameter #: 05 Description: Retrieves the string currently displayed on the slave’s display. The data field in the request message specifies which display and the data field in the response message contains the string. Request Data Field: A 10 character ASCII representation of a numeric value specifying which display to retrieve data from. 0 - Lower Display 1 - Upper Display Response Data Field: The ASCII string. Command: Clear Latched Alarms Parameter #: 10 Description: Clear all latched alarms. Request Data Field: Ignored. Response Data Field: Ignored. Digital Communications Option CN8240 & CN8260 Series Communications & Options 24 Notes CN8240 & CN8260 Series Communications & Options 25 Notes CN8240 & CN8260 Series Communications & Options 26 Notes FOR WARRANTY RETURNS, please have the following information available BEFORE contacting OMEGA: 1. Purchase Order number under which the product was PURCHASED, 2. Model and serial number of the product under warranty, and 3. Repair instructions and/or specific problems relative to the product. FOR NON-WARRANTY REPAIRS, consult OMEGA for current repair charges. Have the following information available BEFORE contacting OMEGA: 1. Purchase Order number to cover the COST of the repair, 2. Model and serial number of the product, and 3. Repair instructions and/or specific problems relative to the product. OMEGA’s policy is to make running changes, not model changes, whenever an improvement is possible. This affords our customers the latest in technology and engineering. OMEGA is a registered trademark of OMEGA ENGINEERING, INC. © Copyright 2008 OMEGA ENGINEERING, INC. All rights reserved. This document may not be copied, photocopied, reproduced, translated, or reduced to any electronic medium or machine-readable form, in whole or in part, without the prior written consent of OMEGA ENGINEERING, INC. WARRANTY / DISCLAIMER OMEGA ENGINEERING, INC. warrants this unit to be free of defects in materials and workmanship for a period of 25 months from date of purchase. OMEGA's Warranty adds an additional one (1) month grace period to the normal two (2) year product warranty to cover handling and shipping time. This ensures that OMEGA’s customers receive maximum cover- age on each product. If the unit malfunctions, it must be returned to the factory for evaluation. OMEGA’s Customer Service Department will issue an Authorized Return (AR) number immediately upon phone or written request. Upon examination by OMEGA, if the unit is found to be defective it will be repaired or replaced at no charge. OMEGA’s WARRANTY does not apply to defects resulting from any action of the purchaser, including but not limited to mishandling, improper interfacing, operation outside of design limits, improper repair, or unauthorized modification. This WARRANTY is VOID if the unit shows evidence of having been tampered with or shows evidence of having been damaged as a result of excessive corrosion; or current, heat, moisture or vibration; improper specification; misapplica- tion; misuse or other operating conditions outside of OMEGA’s control. Components which wear are not warranted, including but not limited to contact points, fuses, and triacs. OMEGA is pleased to offer suggestions on the use of its various products. However, OMEGA neither assumes responsibility for any omissions or errors nor assumes liability for any damages that result from the use of its products in accordance with information provided by OMEGA, either verbal or written. OMEGA warrants only that the parts manufactured by it will be as specified and free of defects. OMEGA MAKES NO OTHER WARRANTIES OR REPRESENTATIONS OF ANY KIND WHATSOEVER, EXPRESS OR IMPLIED, EXCEPT THAT OF TITLE, AND ALL IMPLIED WARRANTIES INCLUDING ANY WARRANTY OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE HEREBY DISCLAIMED. LIMITATION OF LIABILITY: The remedies of purchaser set forth herein are exclusive, and the total liability of OMEGA with respect to this order, whether based on contract, warranty, negligence, indemnification, strict liability or otherwise, shall not exceed the purchase price of the component upon which liability is based. In no event shall OMEGA be liable for consequential, incidental or special damages. CONDITIONS: Equipment sold by OMEGA is not intended to be used, nor shall it be used: (1) as a “Basic Component” under 10 CFR 21 (NRC), used in or with any nuclear installation or activity; or (2) in medical applications or used on humans. Should any Product(s) be used in or with any nuclear installation or activity, medical application, used on humans, or misused in any way, OMEGA assumes no responsibility as set forth in our basic WARRANTY/ DISCLAIMER language, and, additionally, purchaser will indemnify OMEGA and hold OMEGA harmless from any liability or damage whatsoever arising out of the use of the Product(s) in such a manner. RETURN REQUESTS / INQUIRIES Direct all warranty and repair requests/inquiries to the OMEGA Customer Service Department. BEFORE RETURNING ANY PRODUCT(S) TO OMEGA, PURCHASER MUST OBTAIN AN AUTHORIZED RETURN (AR) NUMBER FROM OMEGA’S CUS- TOMER SERVICE DEPARTMENT (IN ORDER TO AVOID PROCESSING DELAYS). The assigned AR number should then be marked on the outside of the return package and on any correspondence. The purchaser is responsible for shipping charges, freight, insurance and proper packaging to prevent breakage in transit. Where Do I Find Everything I Need for Process Measurement and Control? OMEGA…Of Course! 900M124U00B TEMPERATURE – Thermocouple, RTD & Thermistor Probes, Connectors, Panels & Assemblies – Wire: Thermocouple, RTD & Thermistor – Calibrators & Ice Point References – Recorders, Controllers & Process Monitors – Infrared Pyrometers PRESSURE, STRAIN AND FORCE – Transducers & Strain Gages – Load Cells & Pressure Gages – Displacement Transducers – Instrumentation & Accessories FLOW/LEVEL – Rotameters, Gas Mass Flowmeters & Flow Computers – Air Velocity Indicators – Turbine/Paddlewheel Systems – Totalizers & Batch Controllers pH/CONDUCTIVITY – pH Electrodes, Testers & Accessories – Benchtop/Laboratory Meters – Controllers, Calibrators, Simulators & Pumps – Industrial pH & Conductivity Equipment DATA ACQUISITION – Data Acquisition & Engineering Software – Communications-Based Acquisition Systems – Plug-in Cards for Apple, IBM & Compatibles – Datalogging Systems – Recorders, Printers & Plotters HEATERS – Heating Cable – Cartridge & Strip Heaters – Immersion & Band Heaters – Flexible Heaters – Laboratory Heaters ENVIRONMENTAL MONITORING AND CONTROL – Metering & Control Instrumentation – Refractometers – Pumps & Tubing – Air, Soil & Water Monitors – Industrial Water & Wastewater Treatment – pH, Conductivity & Dissolved Oxygen Instruments