Omega Engineering CN8240, CN8260 manual Table of Contents

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CN8240 & CN8260 Series Communications & Options

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

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Contents Series Omega.comTM Table of Contents Option -AL1, -AL2 Relay, N.O. Alarm Output Option -C2 RS-232 one-to-one CommunicationsLoad Type Voltage Limit Option -C4 RS-485 one-to-many Communications Options -XP1, -XP2, -XP3, -XP4 Transducer Power SupplyOptions -RSP4, -RSP5, -RSP6, -RSP7 Options -PVSV1, -PVSV2 Process OutputOptions -DIC, -RSP4, -RSP5, -RSP6, -RSP7 Remote Setpoint Option -DICWith Remote Communications Options Wiring diagram for digital communicationsZone Omega+ ProtocolMessage Formats Start CharType character Message Type ErrorType ParamEND Char ChksumRead Command to Controller Write Command to ControllerRead Response from Controller Auxiliary Command to Controller Write Response from ControllerAuxiliary Response from Controller Request Message Description Read RequestField Description Type Write RequestAuxiliary Command Request Response MessagesField Description Write Response Read ResponseCN8240/CN8260 Parameter Codes Auxiliary Command ResponseRAM, Eeprom Number Name Read Write Data Field ValueDigital Communications Option PID Digital Communications Option Digital Communications Option Digital Communications Option Or RTD w/ Decimal Auxiliary CommandsCommand Retrieve Display Parameter # Description Command Clear Latched Alarms Parameter # DescriptionRequest Data Fields CN8240 & CN8260 Series Communications & Options CN8240 & CN8260 Series Communications & Options CN8240 & CN8260 Series Communications & Options Warranty / Disclaimer Temperature