GE 1601-0149-A2 manual Modbus Functions Function Code

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Modbus Functions

Function Code 05:

Modbus Implementation: Force Single Coil

Execute Operation

489 Implementation: Execute Operation

489

Communications Guide

Function Code 06: Store Single Setpoint

This function code allows the master to request specific 489 command operations. The command numbers listed in the Commands area of the memory map correspond to operation code for function code 05. The operation commands can also be initiated by writing to the Commands area of the memory map using function code 16. Refer to Section Function Code 16: Store Multiple Setpoints on page –7for complete details.

Supported Operations:Reset 489 (operation code 1); Generator Start (operation code 2);

Generator Stop (operation code 3); Waveform Trigger (operation code 4)

Message Format and Example:

Reset 489 (operation code 1).

Master Transmission

Bytes

Example

Description

 

 

 

 

 

 

 

 

Slave Address

1

0B

message for slave 11

 

 

 

 

Function Code

1

05

execute operation

 

 

 

 

Operation Code

2

00 01

reset command (op code 1)

 

 

 

 

Code Value

2

FF 00

perform function

 

 

 

 

CRC (low, high)

2

DD 50

computed CRC error code

 

 

 

 

Slave Response

Bytes

Example

Description

 

 

 

 

 

 

 

 

Slave Address

1

0B

message from slave 11

 

 

 

 

Function Code

1

05

execute operation

 

 

 

 

Operation Code

2

00 01

reset command (op code 1)

 

 

 

 

Code Value

2

FF 00

perform function

 

 

 

 

CRC (low, high)

2

DD 50

computed CRC error code

 

 

 

 

Modbus Implementation: Preset Single Register

489 Implementation: Store Single Setpoint

This command allows the master to store a single setpoint into the 489 memory. The slave response to this function code is to echo the entire master transmission.

Message Format and Example:

Request slave 11 to store the value 01F4 in Setpoint address 1180. After the transmission in this example is complete, Setpoints address 1180 will contain the value 01F4.

Master Transmission

Bytes

Example

Description

 

 

 

 

Slave Address

1

0B

message for slave 11

 

 

 

 

Function Code

1

06

store single setpoint

 

 

 

 

Data Starting Address

2

11 80

setpoint address 1180h

 

 

 

 

 

Data

2

01

F4

data for address 1180h

 

 

 

 

 

CRC (low, high)

2

8D

A3

computed CRC error code

 

 

 

 

 

Slave Response

Bytes

Example

Description

 

 

 

 

Slave Address

1

0B

message from slave 11

 

 

 

 

Function Code

1

06

store single setpoint

 

 

 

 

Data Starting Address

2

11 80

setpoint address 1180h

 

 

 

 

 

Data

2

01

F4

data for address 1180h

 

 

 

 

 

CRC (low, high)

2

8D

A3

computed CRC error code

 

 

 

 

 

GE Multilin

http://www.GEindustrial.com/multilin

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Contents 489 Page Table of Contents Table of Contents Electrical Interface Modbus RTU Description Copyright 2004 GE MultilinGE Multilin Modbus Functions Message Format and Example ValuesModbus Functions Function Code Request status from slave Modbus Functions Function Code 16 Store Multiple Setpoints Illegal Data Address Error ResponsesEvent Recorder Memory Map InformationWaveform Capture Dual Setpoints Passcode Operation 489 Memory Map Sheet 1 Addr Name Range Step Units Format Default 489 Memory Map Sheet 2Status / Trip Pickups 489 Memory Map Sheet 3 Status / Alarm PickupsStatus / Digital Inputs 489 Memory Map Sheet 4Status / Real Time Clock Metering Data / Current MeteringMetering Data / Temperature Metering Data / Power Metering489 Memory Map Sheet 5 Metering Data / Voltage Metering489 Memory Map Sheet 6 Maintenance / General Counters Maintenance / Trip Counters489 Memory Map Sheet 7 Learned Data / Analog in MIN/MAX489 Memory Map Sheet 8 489 Memory Map Sheet 9 Digital Inputs / General Input C 489 Memory Map Sheet 10Digital Inputs / General Input D Digital Inputs / General Input E489 Memory Map Sheet 11 489 Memory Map Sheet 12 489 Memory Map Sheet 13 489 Memory Map Sheet 14 Current Elements / Negative SequenceCurrent Elements / Ground O/C 489 Memory Map Sheet 15 Current Elements / HIGH-SET Phase Overcurrent Current Elements / Phase Differential489 Memory Map Sheet 16 Current Elements / Ground Directional489 Memory Map Sheet 17 Voltage Elements / Neutral Overvoltage Fundamental 489 Memory Map Sheet 18Voltage Elements / Loss of Excitation Voltage Elements / Distance Element489 Memory Map Sheet 19 489 Memory Map Sheet 20 489 Memory Map Sheet 21 RTD Temperature / Open RTD Sensor RTD Temperature / RTD #12RTD Temperature / RTD SHORT/LOW Temperature Thermal Model / Model Setup489 Memory Map Sheet 23 489 Memory Map Sheet 24 489 Memory Map Sheet 25 Analog INPUT/OUTPUT / Analog Input 489 Memory Map Sheet 26Testing / Simulation Mode Testing / PRE-FAULT Setup489 Memory Map Sheet 27 489 Memory Map Sheet 28 Waveform Memory Setup 489 Memory Map Sheet 29Waveform Memory Samples Unsigned Value Code Type DefinitionDecimal Place Decimal PlacesAlarm / Trip Type SwitchReset Mode ALARM/TRIP StatusAnalog Output Input SwitchParameter Overcurrent CurveData Formats Sheet 7 Curve Reset Type Simulation ModeSwitch Status Order CodeElement Type Undervoltage TripBreaker Operation Assignable InputDNP Protocol DNP 3.0 Device Profile Document Default Variations DNP Implementation TableVariation 01/02 Binary Input / BinaryBinary Inputs Sheet 1 Binary Inputs Sheet 2Binary Inputs Sheet 4 Binary Inputs Sheet 3Binary / Control Relay 10/12Binary Output Point List Counters Point List DNP Point Lists Binary / Frozen Counter Objects 20/21Assigned to Analog Inputs Point List Sheet 1Impedance angle Analog Inputs Point List Sheet 2Analog Inputs Point List Sheet 3 Table Notes Analog Inputs Point List Sheet 4Index GE Multilin
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