Siemens SIMATIC MV440 - Set DISA Bit; Reset DISA Bit

Process interfacing via an automation system (PLC, PC)
10.6 Control via TCP/IP and RS-232
SIMATIC MV420 / SIMATIC MV440
304 Operating Instructions, 04/2013, A5E02371045-06
● When the new match string is saved, this is not persistent: If the reader exits processing
mode, for example by changing to STOP mode or to the group error status, the
overwritten match string is discarded. This also applies to a program change.
● The characters of the command must be sent as a contiguous command. If the spacing
between the individual characters is too long, reception of the new match string is
aborted.
Note
If the match string cannot be overwritten, an entry is made in the diagnostic data.
10.6.4 Set DISA bit
This command sets the DISA bit.
Character string
"MDIH" (Machine command set DIsable signal High)
10.6.5 Reset DISA bit
This command resets the DISA bit.
Character string
"MDIL" (Machine command set DIsable signal Low)