84
ifm
Device Manual IO-Link Master with Modbus interface CabinetLine 8 Ports IP 20 (AL1940)
05 / 2018
Appendix
Modbus
>
Acyclic Command Channel
17311
The following Modbus registers are available for acyclic data transmission:
Register
Contents
Bits 8-15
Bits 0-7
500*
Command Request Channel (
→
Request channel
(
→ p.
0*
Command Response Channel (
→
Response channel
(
→ p.
* ... valid start address for accessing the register area (
→
Rules for accessing the Modbus register
(
→ p.
Legend:
[Command Request
Channel]
Area for transmission of command request (fieldbus PLC >>>
IO-Link master)
44 bytes
[Command
Response Channel]
Area for transmission of command response (IO-Link master
>>> fieldbus PLC)
44 bytes