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Table 9- 39
Step
1
2
3
5
If the selected program is not saved, "TRD" and "RDY" will retain the value "0".
SIMATIC MV500
Operating Instructions, 05/2019, C79000-G8976-C494-02
Program selection procedure
Input
Output
Description
DISA = 1
Program selection is prepared.
TRN = 0
DISA must have the value "1". No edge change is necessary.
TRG = 0
RES = 0
SEL0 = 1
Select program, for example, program 11.
SEL1 = 1
SEL2 = 0
SEL3 = 1
TRD = 0
Program selection is started.
RDY = 0
TRD = 1
Program change is completed after approximately 150 ms to 15 s.
RDY = 1
Process interfacing via an automation system (PLC, PC)
9.4 Control with FB 79
133
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