Master Point-To-Point Messaging; Read Remote Messaging - ABB ACSM1 Manual

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Master point-to-point messaging

In this type of messaging, the master sends one dataset (LocalDsNr) from its own
dataset table to the follower's. TargetNode stands for the node address of the
follower; RemoteDsNr specifies the target dataset number.
The follower responds by returning the contents of the next dataset. The response is
stored into dataset LocalDsNr+1 in the master.
Note: Master point-to-point messaging is only supported at the master because the
response is always sent to node address 0 (the master).
Dataset table
(LocalDsNr)
(LocalDsNr+1)

Read remote messaging

The master can read a dataset (RemoteDsNr) from a follower specified by
TargetNode. The follower returns the contents of the requested dataset to the
master. The response is stored at dataset LocalDsNr in the master.
Note: Read remote messaging is only supported at the master because the
response is always sent to node address 0 (the master).
Dataset table
(LocalDsNr)
Appendix B – Drive-to-drive link
Master
TargetNode = X
Master
TargetNode = X
Follower
Dataset table
(RemoteDsNr)
(RemoteDsNr+1)
57.03 NODE ADDRESS = X
Follower
Dataset table
(RemoteDsNr)
57.03 NODE ADDRESS = X