A-1 Modbus TCP
AC30 series Variable Speed Inverter
Appendix A: Modbus TCP
Introduction
The inverters built-in Ethernet includes a Modbus TCP server. The Modbus registers are mapped to the inverters parameters. Up to 3
simultaneous connections to Modbus clients are possible. TCP port 502 is used.
Making a connection to the Ethernet and setting an IP address on the inverter is described in Chapter 12 (Ethernet). If the Modbus TCP is used
as part of a process control it is recommended a dedicated network be used with fixed IP addresses for the inverter.
To allow Modbus TCP connections to the inverter, the parameter 0939 Maximum Connections must be set to a value greater than zero.
MODBUS REGISTER MAPPING SUMMARY
The inverter parameters are mapped to the Holding Registers and Input Registers, either as a fixed mapping or as a user-defined mapping.
There is no mapping to Coils or Discrete Inputs.
To Next Page
Loading...
