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Device Manual IO-Link Master with Modbus interface CabinetLine 8 Ports IP 20 (AL1940)
05 / 2018
Configuration
Modbus
>
8.3.5
Write output data of several IO-Link ports
9633
Register area for compact access to the output data of the IO-
Link ports X01…X04 and X05...X08: →
Output Data
(
The area contains the following data:
Digital output data at clamp 2 of the IO-Link ports
IO-Link output data of the IO-Link ports
► Observe the general rules for access to the Modbus registers (→
Rules for accessing the
Modbus register
(
Several connected register areas can be written with one write command.
The IO-Link master writes only the outputs in "Compact Output Data" that are completely
covered by the transferred output data.
Example: The configured process data length is 4 bytes. If all in all 5 words have been
transferred to register 600, the IO-Link master writes the outputs X01 (words 1+2) and X02
(words 3+4). Output X03 is not written.
► When writing the IO-Link outputs, ensure that the output data has the correct length!
The output data is invalid in the following situations:
no Ethernet cable connected
PLC has terminated the connection
connection to the PLC has a timeout
Register area
Contents
Access
Start
address
Length
(words)
599
1
Port X01...X04: Digital Output - clamp 4 (DO)
r/w
600
2n
Port X01...X04: Compact Output Data IO-Link (4n bytes)
r/w
699
1
Port X05...X08: Digital Output - clamp 4 (DO)
r/w
700
2n
Port X05...X08: Compact Output Data IO-Link (4n bytes)
r/w
r/w = read and write
n = [2,4,8,16,32]; is determined by parameters [Process Data Length] (
→
Configuration Area
(
