GE Industrial Solutions EntelliPro ES - Manual (Page 150)

EP OS MOTOR MANAGEMENT SY STEM – INSTRUCTION MANUAL 4.13
CHAPTER 4: COMMUNICATION
4.1.10.4 Function Code 06H
Modbus Implementation: Preset Single Register
EntelliPro ES Implementation: Store Single Setpoint
This command allows the master to store a single setpoint into the memory of a EntelliPro ES. The slave response to this
(save paramerters in memory) using Modbus function code 05 must be executed.
NOTE: To save the written value in the memory thus preventing the loss of this data upon power cycle, operation code 185
function code is to echo the entire master transmission.
For example, request slave 17 to store the value 2 in setpoint address 04 5C. After the transmission in this example is
complete, setpoints address 04 5C will contain the value 0
0 02. The master/slave packet format is shown below:
Master Transmission Bytes Example Description
SLAVE ADDRESS 1 11 message for slave 17
FUNCTION CODE 1 06 store single setpoint
DATA STARTING ADDRESS 2 04 5C setpoint address 04 5C
DATA 2 00 02 data for setpoint address
04 5C
CRC 2 CB B9 CRC error code
Slave Response Bytes Example Description
SLAVE ADDRESS 1 11 message from slave 17
FUNCTION CODE 1 06 store single setpoint
DATA STARTING ADDRESS 2 04 5C setpoint address 04 5C
DATA 2 00 02 data stored in setpoint
address 04 5C
CRC 2 CB B9 CRC error code
Table 4-6: Master/Slave Packet Format For Function Code 06H