Siemens SIMATIC MV500, Operating Instructions Manual, Page: 198 / 294

Process interfacing via an automation system (PLC, PC)
9.6 Control via TCP/IP and RS232
SIMATIC MV500
198
Operating Instructions, 03/2021, C79000-G8976-C494-05
• Saving programs.
• Setting "Digital out".
A control command is triggered in each case by the corresponding string.
Table 9- 53 Overview of all commands with a string
Command String
Trigger Identical to the configured string in the WBM
Write match string You can find a description of the command in the section
"Write match string (Page 198)".
Set DISA bit MDIH
Reset DISA bit MDIL
Query status MGST
Program change
(select program number)
MR<programnr>
Save program
with internal trigger
MI<programnr>
Save program
with external trigger
MT<programnr>
Reset command MRES
Set digital out MO<p1><p2><p3><p4><p5><p6>
9.6.1 Trigger
When the optical reader receives a character string that is identical to the configured
character string in the WBM, it triggers image acquisition and processing.
9.6.2 Write match string
Note
Sent match string takes effect immediately
A sent match string takes effect immediately. The sent match string is not synchronized with
the trigger signal or the processing of buffered acquired images.
Therefore, ensure that the match string is sent when no image acquisition is running.