Analog modules
6.12 Analog output module SM 332; AO 4 x 16 bit; isochronous; (6ES7332-7ND02-0AB0)
S7-300 Automation System Module data
6-108 Manual, 08/2006, A5E00105505-04
Wiring: 4-wire connection
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Figure 6-34 Wiring and block diagrams
① Backplane bus interface
② Electrical isolation
③ Potential compensation
④ Function ground/earth