Siemens SIMATIC SM 335 - Page 57

Data Exchange with the SM 335
3-19
SM 335 – High-Speed Analog Input/Output Module for the SIMATIC S7-300
6ES7 335-7HG00-8BA1
Interrupt and substitute value output (DR1, Byte 0)
The interrupt and substitute value output parameter defines the following:
• Whether a hardware interrupt (conditional cycle only) is to be generated
• Whether a diagnostics interrupt is to be generated
• Whether the last valid analog value or 0 V is to be output as a substitute value
The hardware and diagnostic interrupt settings are effective on all module chan-
nels.
76543210
Analog output CH0
Analog output CH1
Analog output CH2
Analog output CH3
= 1: Substitute value = Last analog value
= 0: Substitute value 0 V is output
Enable hardware interrupt
with end-of-cycle
76543210
Enable diagnostic
interrupt
Fig. 3-3 Meaning of the bits in the “interrupt and substitute value output”
byte (DR1, byte 0)