Omega CN1166 manual DC Outputs, 11 RS485 Serial Communications Link

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1.3.10DC Outputs

See Appendix A.

1.3.11RS485 Serial Communications Link

The cable used should be suitable for data transfer at the selected rate (1200, 2400, 4800 or 9600 Baud) over the required distance. Transmitters/receivers conform to the recommendations in the EIA Standard RS485.

The “A” terminal (Terminal 11) on the Profile Controller should be connected to the “A” terminal on the master device; the “B” terminal (Terminal 12) on the Profile Controller should be connected to the “B” terminal on the master device. Where several Profile Controllers are connected to one master port, the master port transceiver in the active state should be capable of driving a load of 12k per Profile Controller; the master port transceiver in the passive state must have pull-up/pull-down resistors of sufficiently low impedance to ensure that it remains in the quiescent state whilst supplying up to 100A each to the Profile Controller transceivers in the high impedance state.

NOTE: The RS485 Serial Communications option and the Remote Run/Hold option are mutually exclusive.

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Volume I

S077-1

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Contents Page Page RAMP/SOAK Profile Volume Operating Instructions Volume Installation & Configuration InstructionsContents PANEL-MOUNTING the Controller Unpacking ProcedureConnections and Wiring Rear Terminal Connections RTD Inputs Mains Line Input2 24V Nominal AC/DC Supply Thermocouple InputSSR Drive Outputs Linear InputsRemote Run/Hold Input Relay Outputs11 RS485 Serial Communications Link DC OutputsRemoving the Profile Controller from ITS Housing Internal Links and SwitchesRemoving the Output 2/Output 3 Option PCBs REMOVING/REPLACING the Output 2/OUTPUT 3 Option PCBs Replacing the Instrument in ITS HousingInput Type Selection of Input Type and Output 1 TypeCPU PCB Relay/SSR Drive/Solid State Output Primary Output Output 1 TypeOutput 2 TYPE/OUTPUT 3 Type Hardware Definition Code Entry Into Configuration ModeWit h Hardw are Definit ion Code displayed Configurat ion ModeHardware Definition Code Input/Output Type Selection Option SelectionWit h Hardw are Definit ion Code displayed Configuration Mode ParametersParameter AL1 OFF, AL2 OFF Parameter Page Exit from Configuration Mode Base Mode Alphabetic Index Controller SET-UP ModeProgram Definition Mode CREATING/EDITING a Program Modbus CommunicationsDisplay Sequence no Program Running Base ModeAborting a Program Starting a ProgramPutting a Program in Hold Releasing a Program from HoldRead Only whilst Program is running/held Display Sequence Program RunningPRE-TUNE Feature RaPID Control FeatureIndication of PRE-TUNE and RaPID Status Engaging Both PRE-TUNE and RaPID FeaturesRaPID Status when Hardware Definition Code has the following significance Viewing the Hardware Definition CodePress till front panel shows Press or to change display to Manual ControlController SET-UP Mode Lower display = Parameter Details Parameter Function Adjustment Range Default ValueON/OFF Parameter Function Adjustment Range Default Value Power Alarm Operation Deviation When this display shows Exit from Controller SET-UP ModeEntry Program Definition Mode CREATING/EDITING a ProgramBasic Guidelines Creating a ProgramTo make a Soak segment Defining Segments Rate ModeDefining Segments Time Mode Program Options T p o i n t Guaranteed Soak BandSegment Event Status Press key To display Exit from Program Define Mode Default Values and Adjustment RangesMessage Formats IntroductionModbus Functions Supported CRC16 Read Coil Status Read n Bits 01/02Force Single Coil Write 1 Bit Read Holding Registers Read n Words 03/04Preset Multiple Registers Write n Words 16 B Preset Single Register Write 1 Word 06 BLoopback Diagnostic Test CRC16 Calculation Error and Exception ResponsesReversed BIT Order Used Bit Parameters Controller Status Byte Parameter NumbersController Parameters Word ParametersInstrument ID Parameters Volume O077-4 Profiler Status Byte Profiler CommandsGeneral Universal InputInput Range Remote RUN/HOLD Input Option Solid State OutputRelay SSR Drive/TTLTypes Available Relay, SSR drive, solid state and DC Solid State SSR Drive/TTL Loop Control Alarm ControlPerformance Under Reference Conditions PerformanceReference Conditions S077-A Volume Physical EnvironmentalSee Performance Appendix B Summary of Displays Program Define Mode Parameters Configuration Mode Parameters AppendixC RaPID Control Feature AT OFF Alphabetical Index S077-IDX Volume Making a Soak Segment S077-IDX Volume Unpacking Procedure Word Parameters II/4-8