
Digital modules
4.21 Relay output module SM 422; DO 16 x UC 30/230 V/Rel. 5 A (6ES7422-1HH00-0AA0)
S7-400 Automation System Module Data
Reference Manual, Edition 09/2009, A5E00850736-06
175
Wiring and block diagram of the SM 422; DO 16 x UC 30/230 V/Rel. 5 A
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Process Module
Data register and bus controlLED control
Figure 4-18 Wiring and block diagram of the SM 422; DO 16 x UC 30/230 V/Rel. 5 A
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