Siemens SIMATIC MV500, Operating Instructions Manual, Page: 204 / 294

Process interfacing via an automation system (PLC, PC)
9.6 Control via TCP/IP and RS232
SIMATIC MV500
204
Operating Instructions, 03/2021, C79000-G8976-C494-05
Send
(string)
Receive
(string)
Description
... ... Cyclic status query;
recommended time interval: 1 s.
If the optical reader is in processing mode with
program no. 05, the saving process was success-
ful.
If an error occurred, the program could not be
saved (e.g. no code in the image).
If the optical reader is not in processing mode or
there is no group error, the saving process has not
finished.
MGST --
-- RGST ...
... ... ...
9.6.8 Reset command
This command acknowledges an error or cancels "Save program with external trigger".
String
"MRES" (Machine command RESet)
This command returns no response string.
Send "MRESMGST" to get acknowledgment.
If "Save program with external trigger" is canceled with the reset command, the optical
reader will briefly be in an error state (error in sequence). The error state is automatically quit
or acknowledged.
9.6.9 Set digital out
Writing command data
With this command, you can set the four logic signals "EXT_1", "EXT_2", "EXT_3" and "EXT_4"
and link them to other logic signals. Note that these signals can only be set via an automation
system.
In addition, you can apply these signals to the available digital output pins via the WBM.
Receipt of this command is logged in the diagnostics data records.