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Rockwell Automation Publication 871FM-UM002A-EN-P - April 2017
81
Explicit Messaging Examples
Appendix D
Read Index
Figure 4 - Read Index
Table 8 - Ladder Logic Rules
(1)
Instruction
Message Configuration
Array[0]
Array[1]
Source Length [bytes]
Service Code
Attribute ID
Write
4IOL
Channel#
value
4IOL
index value 1
4c
Subindex#
8IOL
Channel#
value
8IOL
index value 1
4c
Subindex#
Instruction
Message Configuration
Array[0]
Array[1]
Source Length [bytes]
Service Code
Attribute ID
Read
4IOL
Channel#
4IOL
1
4d
Subindex#
8IOL
Channel#
8IOL
1
4d
Subindex#
(1) For more information about Service Codes, see Appendix A.