Insys GSM LOGO 4.2 Compact 11-02-01-03-04.001 Manuale Utente

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11-02-01-03-04.001
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INSYS GSM 4.2 LOGO! 
22  
Dezember 
06
 
3.3.4.2  Changing Status 
e.g.: Set status to RUN 
Command: 
STATUS=<logo-status> 
 <logo-status>:
  RUN   
Switch on LOGO!, 
start control program 
 
 
 
 
STOP   
Switch off LOGO!, 
terminate control program 
 
 
The LOGO! status change is attempted up to three times, if necessary. If still no 
reply is received from LOGO!, an SMS containing the text “NO SUCCESS” will be 
transmitted instead of “OK” 
If LOGO! acknowledges the status change negatively, “ERROR” is sent as the reply 
SMS. This can also occur if the current LOGO! status already matches the status to 
be set. 
A callback number (“CN:  “) does not have to be specified. However, without a 
callback number, there is no reply. 
 
3.3.5  LOGO! Checksum 
Command: 
CHKSUM? 
 
A reply follows containing the checksum of the control program running on the 
LOGO!  
The checksum output is made up of four hexadecimal digits. 
This function can be used to uniquely identify a control program (version control). 
 
When an elapsed time counter is used, the checksum is changed when the “Reset 
All” (Ral) input of the counter is activated the first time. Afterwards, the checksum 
is not changed. In this case, the checksum of the control program must be read 
out again. 
 
The LOGO! checksum scan is attempted up to three times, if necessary. If still no 
reply is received from LOGO!, an SMS containing the text “NO SUCCESS” will be 
transmitted instead of the checksum SMS. 
A callback number (“CN:  “) must be specified.