Siemens SIMATIC MV500 Operating Instructions Manual page 180

Process interfacing via an automation system (PLC, PC)
9.4 Control with FB 79
Note
Reaction when an error occurs
After an error has occurred, you will need to set the "SEL0" to "SEL3" signals and the "TRN"
signal to "0" and then reset the error with the "RES" signal. The "DISA" signal must have the
value "1" (no edge change).
Table 9- 40
Step
1
2
3
4
5
Start processing
Processing starts immediately on completion of the program saving.
Table 9- 41
Step
1
2
180
Sequence when saving the program
Input
DISA = 1
Apply for at least 100 ms:
SEL0 = 1
SEL1 = 1
SEL2 = 0
SEL3 = 1
TRN = 1
SEL0, SEL1, SEL2,
SEL3 = 0
Wait at least 200 ms
SEL1 = 1
Apply for at least 5 ms:
TRG = 1
SEL1=0
TRN = 0
Processing of program memory
Input Output Description
You select a program, for example, program 11.
The outputs are set as follows depending on the processing result:
Code was localized and decoded.
READ
Code matches the trained code.
MATCH
Code was not legible.
N_OK
Output Description
Disable keyboard control. DISA must have the
value 1. No edge change is necessary.
Select program to be saved, for example code 11.
Start program saving
TRD = 0 TRD signal changes to FALSE
RDY = 0 RDY signal changes to FALSE
Feed in object with data matrix code.
Save program
Trigger signal
TRD = 1 Selected program has been saved.
Reset signals.
Exit program saving.
TRD = 0 TRD signal changes to FALSE for 150 ms.
TRD = 1 TRD signal changes to TRUE.
RDY = 1 Program saving is exited.
Operating Instructions, 03/2021, C79000-G8976-C494-05
SIMATIC MV500