EM-GU User’s Manual
6. Modbus Communication Protocol
21
0x0131
6
th
fault record
85: Running over load
86: Starting over load
87: Under load
88: Over current
89: Current Unbalance
90: Running over current
91: Starting over current
99: Phase Sequence failure
9A: Reserved
9B: Reserved
0x0132
7
th
fault record
0x0133
8
th
fault record
0x0134
9
th
fault record
0x0135
10
th
fault record
0x0136
11
th
fault record
0x0137
12
th
fault record
Read other state:
Command address
Name
0x0052
Output current
0x0053
Input current
0x0054
A phase current
0x0055
B phase current
0x0056
C phase current
0x0057
Percentage of starts completed
0x0058
Current unbalance P.C.
0x005D
Input terminal state(1:On
，
0:Off)
Bit0
IN1
Start
Bit1
IN2
Stop
Bit2
IN3
Fault
6.3 Abnormal Feedback
Code
Name
Explanation
01
Illegal function
Soft starter does not support this function code
02
Illegal data address
Illegal address, can not implement
03
Illegal data value
Can not implement received value
1. Parameter out of range
2. Parameter can not revise
3. Parameter can not revise during running
Remarks
⚫
The communication address, communication rate and check mode of the soft starter must be the same as the
communication settings of the controller.
⚫
If no response data is received, check that the above parameters are set and that the terminal connections are
correct.
⚫
When communicating with multiple soft starters, a 120 ohm resistor should be connected to the R485+ and
485- terminals of the last soft starter.
⚫
Connect with MODBUS of other equipment, please wiring according to following diagram:
