Data transfer to the PLC
7.2 Control program example
3WL/3VL circuit breakers with communication capability - PROFIBUS
System Manual, 03/2011, A5E01051353-02
155
7.2.3 Using cyclic data
General
Programming is carried out in OB1 or in a block called by OB1
Step 1 Copying status information for programming
Network 1
Fetch I/O data of the status and save for further use
L PIW 256 //Value from hardware configuration "I
address"
T MW 10 //User-defined storage location MW, ...
This makes the bit information accessible for further program execution via M 10.0 – M 11.7
Step 2 Prepare status information (example: status of the circuit breaker)
Network 2
Only using the example of "Status of the circuit breaker"
A M 10.2 //Bit n.2 from the status information
A M 10.3 //Bit n.3 from the status information
= "RM_TRIP" //Signal for further processing
//(value 3 = tripped)
AN M 10.2 //Bit n.2 from the status information
A M 10.3 //Bit n.3 from the status information
= "RM_ON" //Signal for further processing (value 2 = ON)
A M 10.2 //Bit n.2 from the status information
AN M 10.3 //Bit n.3 from the status information
= "RM_OFF" //Signal for further processing (value
1 = OFF)
//only with hardware defect/failure
AN M 10.2 //Bit n.2 from the status information
AN M 10.3 //Bit n.3 from the status information
= "RM_nOK" //Signal for further processing
//(Value 0 = not ready)
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