Instruction/ maintenance manual of the product CN8240 Omega Engineering
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CN 82 40 & C N8 26 0 Se ri es C om mu ni ca ti on s & Op ti on s www .omega.com e-mail: info@omega.com ome ga. com ® ® CN8240 & CN8260 SERIES Communications & Options Guide User ’ s Guide TM 10002 Athena Omega:900M124U00.
CN 82 40 & C N8 26 0 Se ri es C om mu ni ca ti on s & Op ti on s i It is t he p olic y of OME GA to com ply with al l wo rldw ide safe ty a nd E MC/E MI r egu lati ons that app ly . OME GA is cons tant ly p ursui ng cer tifi cati on of its prod ucts to the Euro pean New App roac h Dir ectiv es.
CN 82 40 & C N8 26 0 Se ri es C om mu ni ca ti on s & Op ti on s ii T able of Contents For inf or mation and instructions related to basic operations , refer to the CN8240/CN8260 operator’ s manual supplied with your controller . Option Wiring Diagrams Alarm Output .
1 2 3 1 1 12 13 2 3 2 4 RCV B(-) XMT A(+) SIG GND SIG GND RS 232 RS 485 RCV XMT SIG GND CN 82 40 & C N8 26 0 Se ri es C om mu ni ca ti on s & Op ti on s 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.
CN 82 40 & C N8 26 0 Se ri es C om mu ni ca ti on s & Op ti on s 2 RS-485 Communications 1 2 3 1 1 12 13 14 2 3 2 4 4 RCV B(-) XMT A(+) SIG GND SIG GND RS 232 RS 485 Option Description: Provides one-to-many communications.
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.
CN 82 40 & C N8 26 0 Se ri es C om mu ni ca ti on s & Op ti on s 4 CN8240/CN8260 Series Controllers with Digital Communications Option ome ga.c om ® ® 10002 Athena Omega:900M124U00.
CN 82 40 & C N8 26 0 Se ri es C om mu ni ca ti on s & Op ti on s 5 Di git al Co mmu nic at ion s O pti on This method allows bidirectional data transfer via a three-conductor cable consisting of signal ground, receive input and transmit output.
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 CN 82 40 & C N8 26 0 Se ri es C om mu ni ca ti on s & Op ti .
CN 82 40 & C N8 26 0 Se ri es C om mu ni ca ti on s & Op ti on s 7 TYPE character Message T ype R Read Request or Read Response Returning a Positive Result r Read Response Returning a Negative.
CN 82 40 & C N8 26 0 Se ri es C om mu ni ca ti on s & Op ti on s 8 Di git al Co mmu nic at ion s O pti on Numeric Value ASCII Representation 3 3.
CN 82 40 & C N8 26 0 Se ri es C om mu ni ca ti on s & Op ti on s 9 READ RESPONSE FROM CONTROLLER READ COMMAND TO CONTROLLER Controller ID Read Command Checksum Start of Message Zone Number Par.
CN 82 40 & C N8 26 0 Se ri es C om mu ni ca ti on s & Op ti on s 10 WRITE RESPONSE FROM CONTROLLER Controller ID Write Command No Error Checksum Start of Message Zone Number Parameter Number E.
CN 82 40 & C N8 26 0 Se ri es C om mu ni ca ti on s & Op ti on s 11 Di git al Co mmu nic at ion s O pti on The Read Request: The Read Request is used to query parameter values and it has the following message format: [ST ART CHAR][ID][ZONE][TYPE][PARAM][CHKSUM][END CHAR] Field Description: TYPE Must contain the uppercase letter ‘R’.
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.
CN 82 40 & C N8 26 0 Se ri es C om mu ni ca ti on s & Op ti on s 13 Request Message Description $Ø1Ø1AØ1XXXXXXXXXXL2<CR> T ell controller #1 to load all parameters with their defaults. The 10 X’ s are padding characters. $Ø2Ø1AØ2ØØØ1.
CN 82 40 & C N8 26 0 Se ri es C om mu ni ca ti on s & Op ti on s 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.
CN 82 40 & C N8 26 0 Se ri es C om mu ni ca ti on s & Op ti on s 15 Request Message Description %Ø1Ø1AØ1ØXXXXXXXXXXØ4<CR> Default load all parameters has started. %Ø2Ø1AØ2ØØ.ØØØØØØØØB6<CR> RTD low calibration on controller #2 has started.
CN 82 40 & C N8 26 0 Se ri es C om mu ni ca ti on s & Op ti on s 16 Di git al Co mmu nic at ion s O pti on T able 1. Continued Number Name Read Write Data Field Value 5 Process Value X 0 6 Ope.
CN 82 40 & C N8 26 0 Se ri es C om mu ni ca ti on s & Op ti on s 17 Di git al Co mmu nic at ion s O pti on T able 1. Continued Number Name Read Write Data Field Value 39 Autotune Damping X X 1.
CN 82 40 & C N8 26 0 Se ri es C om mu ni ca ti on s & Op ti on s 18 Di git al Co mmu nic at ion s O pti on T able 1. Continued Number Name Read Write Data Field Value 92 Input T ype X X 0 - B .
CN 82 40 & C N8 26 0 Se ri es C om mu ni ca ti on s & Op ti on s 19 Di git al Co mmu nic at ion s O pti on T able 1. Continued Number Name Read Write Data Field Value A2 Output 1 Cycle Time X .
CN 82 40 & C N8 26 0 Se ri es C om mu ni ca ti on s & Op ti on s 20 Di git al Co mmu nic at ion s O pti on T able 1. Continued Number Name Read Write Data Field Value D0 Alarm 2 Delay X X D1 A.
CN 82 40 & C N8 26 0 Se ri es C om mu ni ca ti on s & Op ti on s 21 Di git al Co mmu nic at ion s O pti on T able 1. Continued Number Name Read Write Data Field Value F6 High-Voltage Span Cali.
CN 82 40 & C N8 26 0 Se ri es C om mu ni ca ti on s & Op ti on s 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.
CN 82 40 & C N8 26 0 Se ri es C om mu ni ca ti on s & Op ti on s 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.
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CN 82 40 & C N8 26 0 Se ri es C om mu ni ca ti on s & Op ti on s 25 No tes 10002 Athena Omega:900M124U00.qxd 5/13/08 2:39 PM Page 28.
CN 82 40 & C N8 26 0 Se ri es C om mu ni ca ti on s & Op ti on s 26 No tes 10002 Athena Omega:900M124U00.qxd 5/13/08 2:39 PM Page 29.
FOR WARRANTY RETURNS, please have the following information available BEFORE contacting OMEGA: 1 . Purc hase Order number under which the product was PURCHA SED, 2. Model an d se ria l n umb er o f t he pro duc t un der war ranty , and 3. Repair instructions and/or specific problems relative to the product.
W h e r e D o I F i nd E v e ry t h i n g I Ne e d f o r P r o c e s s Me a s u r e m e nt a n d C o nt r o l ? O ME G A … O f C ou r s e ! 900M124U00B TEMPERA TURE – Thermocouple, R TD & Ther.
An important point after buying a device Omega Engineering CN8240 (or even before the purchase) is to read its user manual. We should do this for several simple reasons:
If you have not bought Omega Engineering CN8240 yet, this is a good time to familiarize yourself with the basic data on the product. First of all view first pages of the manual, you can find above. You should find there the most important technical data Omega Engineering CN8240 - thus you can check whether the hardware meets your expectations. When delving into next pages of the user manual, Omega Engineering CN8240 you will learn all the available features of the product, as well as information on its operation. The information that you get Omega Engineering CN8240 will certainly help you make a decision on the purchase.
If you already are a holder of Omega Engineering CN8240, but have not read the manual yet, you should do it for the reasons described above. You will learn then if you properly used the available features, and whether you have not made any mistakes, which can shorten the lifetime Omega Engineering CN8240.
However, one of the most important roles played by the user manual is to help in solving problems with Omega Engineering CN8240. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device Omega Engineering CN8240 along with tips on how to solve them. Even if you fail to solve the problem, the manual will show you a further procedure – contact to the customer service center or the nearest service center
