Siemens SIMATIC MV550 S Operating Instructions Manual page 158

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Process interfacing via an automation system (PLC, PC)
9.6 Control via TCP/IP and RS232
The program is saved with the specified number.
Note that if a program has already been saved with this number and no error occurred during
the save procedure, this program is overwritten. If the save procedure is successful, the
optical reader then goes into processing mode with the relevant program number.
String
"MT<programnr>" (Machine command sTore code <programnr>)
Table 9- 58
Characters
<programnr>
Response string
"RTRDY<endekennung>" (Reply sTore program ReaDY)
Table 9- 59
Characters
<endekennung>
After this response string is received, a trigger can be sent via an external source.
Note the following:
● If this response string is not sent, either the DISA bit has not been set or <program no> is
outside the valid range.
● If "RTRDY" is received and the trigger is sent, the status must be queried cyclically with
"MGST". The query is used to check whether the save procedure is completed.
● When the save procedure is completed, the optical reader will be in processing mode with
<program no>.
● If the optical reader is not in processing mode and there is no error state, the save
procedure is not yet finished or it is still waiting for the trigger signal.
Once the save procedure is completed, the DISA bit is reset.
The save procedure can be canceled with "Reset command (Page 159)" (upon receipt of
"RTRDY").
158
String structure
Description
Number of the program saved.
String structure
Description
- Non-printable ASCII character with the value "0x04".
Two printable ASCII characters with the value "0" to "9".
Valid range of values: 00 ... 15.
Operating Instructions, 05/2019, C79000-G8976-C494-02
SIMATIC MV500

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