Writing datalinks – Rockwell Automation 20-COMM-M Modbus/TCP Adapter User Manual
Page 49
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Using Modbus/TCP Function Codes
4-13
20-COMM-M Modbus/TCP Adapter User Manual
Publication 20COMM-UM014C-EN-P
Table 4.L Register Addresses to Read Datalinks
All 16-bit parameter values will appear in the Lo Word of an assigned
Datalink Out.
Writing Datalinks
Use the register addresses in
Table 4.M
to write to Datalinks using Function
Code 16 or 23.
Table 4.M Register Addresses to Write Datalinks
Any Datalink In can also be read using Function Code 03 or 23.
Register
Address
Description
Detail
10025
Datalink A1 Out
Lo Word
10026
Hi Word
10027
Datalink A2 Out
Lo Word
10028
Hi Word
10029
Datalink B1 Out
Lo Word
10030
Hi Word
10031
Datalink B2 Out
Lo Word
10032
Hi Word
10033
Datalink C1 Out
Lo Word
10034
Hi Word
10035
Datalink C2 Out
Lo Word
10036
Hi Word
10037
Datalink D1 Out
Lo Word
10038
Hi Word
10039
Datalink D2 Out
Lo Word
10040
Hi Word
Register
Address
Description
Detail
10005
Datalink A1 In
Lo Word
10006
Hi Word
10007
Datalink A2 In
Lo Word
10008
Hi Word
10009
Datalink B1 In
Lo Word
10010
Hi Word
10011
Datalink B2 In
Lo Word
10012
Hi Word
10013
Datalink C1 In
Lo Word
10014
Hi Word
10015
Datalink C2 In
Lo Word
10016
Hi Word
10017
Datalink D1 In
Lo Word
10018
Hi Word
10019
Datalink D2 In
Lo Word
10020
Hi Word