18
Anybus Option Modules
4.3.2 Cyclic Data
Modbus does not feature a dedicated cyclic data channel in the same sense as other
networks. However, in the Anybus implementation, you can still access network Process Data
via dedicated entries in the Modbus register map.
•
Output Process Data may be written to as Holding Registers 1 to 9.
•
Input Process Data may be read as Input Registers 1 to 9.
•
Input Process Data may also be read as Holding Registers 2049 to 2057 (257 to 265 if
M30 module).
4.3.3 Acyclic Data
Parameters can be accessed acyclically from the PLC via Holding Registers.
Register
= parameter 5000
For example:
409)SUMMER
409)SUMMER
1
1
INPUT
INPUT
2
2
is
Holding Register 5409
4.3.4 Electronic Data Sheet
Not used by Modbus TCP.
