
Digital modules
4.20 Digital output module SM 422; DO 16 x AC 20-120 V/2 A (6ES7422-5EH00-0AB0)
S7-400 Automation System Module Data
170 Reference Manual, Edition 09/2009, A5E00850736-06
Wiring diagram of the SM 422; DO 16 x AC 20-120 V/2 A
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Byte 0
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1L1
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Byte 1
INTF
EXTF
t
Process Module
Data register and bus controlLED control
Figure 4-17 Wiring diagram of the SM 422; DO 16 x AC 20-120 V/2 A
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