ProSoft Technology MVI46-103M - Manual (Page 44)

MVI46-103M ♦ SLC Platform Ladder Logic
IEC 60870-5-103 Master Communication Module
Page 44 of 187 ProSoft Technology, Inc.
September 12, 2006
The next rung displays an example of building a 9901 block to send a user
command to a controlled device:
This rung copies the command to issue from the user file into the M1 file and sets
the command count to 1. The last operation on the M1 file is to set the command
code 9901 in to the file. The module will place all valid commands received in
9901 blocks into the command queue for execution.
The next rung demonstrates the use of the 9902 block:
This rung requests that the single command number 1 in the user command list
be placed into the command queue.