Siemens SIMATIC MV440 - Trigger

Process interfacing via an automation system (PLC, PC)
10.6 Control via TCP/IP and RS-232
SIMATIC MV420 / SIMATIC MV440
302 Operating Instructions, 04/2013, A5E02371045-06
You can use this connection for:
● Triggering
● Overwriting the match string of the current program (non-persistent)
● Setting and resetting the DISA bit
● Changing program
● Saving programs
● Querying the status of the reader and acknowledging group errors
● Writing a trigger-synchronized match string (XMATCH)
● Setting "Digital out"
A control command is triggered in each case by the corresponding string.
Overview of all commands with a string
Command Character string
Trigger Identical to the configured string in the
adjustment support
Write match string See "Write match string" (Page 303)
Set DISA bit MDIH
Reset DISA bit MDIL
Query status MGST
Program change (select program number) MR<program number>
Save program with internal trigger MI<program number>
Save program with external trigger MT<program number>
Reset command MRES
XMATCH command See "XMATCH command (writing a trigger-
synchronized match string)" (Page 310) and
"XMATCH user data (without header)"
(Page 311).
Set digital out MO<p1><p2><p3><p4><p5><p6>
10.6.2 Trigger
If the reader receives a character string that is identical to the configured character string in
the adjustment support, it triggers image acquisition and processing.