Siemens SIMATIC SM 335 Manual page 57

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.
Enable hardware interrupt
with end-of-cycle
Fig. 3-3
SM 335 – High-Speed Analog Input/Output Module for the SIMATIC S7-300
6ES7 335-7HG00-8BA1
7 6 5 4 3 2 1 0 7 6 5 4 3 2 1 0
Enable diagnostic
interrupt
Meaning of the bits in the "interrupt and substitute value output"
byte (DR1, byte 0)
Data Exchange with the SM 335
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
3-19