ET/EP/EH Series Intelligent Flexible Driver Manual
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Appendix C Modbus Communication
Protocol
The Modbus address is set to that of the inverter in hexadecimal:
Register Modbus address = register address + 0x999A
Register bit Modbus address = register address *16+ bit number n (n=0, …, 15)
Modbus address of inverter parameter = parameter number expressed in hexadecimal (for example,
Modbus address of parameter P10.23 is 0x1023)
The Modbus address is set to that of the inverter in decimal:
Register Modbus address = register address + 10000
Register bit Modbus address = register address *16+ bit number n (n=0, …, 15)
Modbus address of inverter parameter = parameter number expressed in decimal (for example,
Modbus address of parameter P10.23 is 1023)
C.1 Command data [Register 3, 6] [Bit 1, 5]
Read the register function code 3 in the table and write the register function code 6 in the table
Read the bit function code 1 in the table and write the bit function code 5 in the table
Communication control word
Reserved (1: external fault)
1: reset fault instruction
Reserved (multi-speed option # Schedule Z-1)
Reserved (1: effective jogging frequency #)
Acceleration and deceleration time option 0: curve 1 1: curve 2
Reserved (1: locking base electrode #)
1: select the running and giving command 2 0: select the running and
giving command 1
1: Select PID parameter group 2; 0: Select PID parameter group 1
Reference value for modbus target frequency and communication
0~30000:0.00~300.00Hz
Reserved (reference value for current modbus frequency)
IQ10 (1.0): rated frequency
Reserved (reference value for Modbus PID)
10,000 corresponds to 100% of the reference value
Reserved (validity of Modbus PID target value 1: valid 0: invalid)
Reserved (AO1 output value)
-1024~1024:-5.00~5.00V
Reserved (AO2 output value)
-1024~1024：-5.00~5.00V
Multifunctional port output #
1: DO0 (relay A) ON 0: OFF
1: DO1 (relay B) ON 0: OFF
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