COMMUNICATIONS GUIDE RS485 INTERFACE (MODBUS RTU)
MM300 MOTOR MANAGEMENT SYSTEM – COMMUNICATIONS GUIDE 7
The commands that can be performed by the MM300 using function code 05 can also be
initiated by using function code 10.
Function Code 06H
Modbus Implementation: Preset Single Register
MM300 Implementation: Store Single Setpoint
This command allows the master to store a single setpoint into the memory of a MM300
The slave response to this 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
01F4. The master/slave packet format is shown below:
Table 4: Master/slave packet format for function code 06H
Operation Code Description
1Reset
2Lockout Reset
3Stop
4Start A
5Start B
96 Clear Last Trip Data Prompt
97 Reset MWh and Mvarh Meters
99 Clear Counters
100 Clear Event Records
102 Clear Maintenance Timer
112 Clear RTD Maximums
113 Reset Motor Information
114 Auto Mode
115 Manual Mode
116 Manual Inhibit
117 Manual Restore
MASTER TRANSMISSION BYTES EXAMPLE DESCRIPTION
SLAVE ADDRESS 1 11 message for slave
17
FUNCTION CODE 1 06 st ore 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