Siemens S7-300 - Page 144

Digital modules
8.6 SM 326; DO 10 x DC 24V/2A (6ES7326-2BF01-0AB0)
Fail-safe signal modules
144 Installation and Operating Manual, 01/2010, A5E00085586-10
Wiring and block diagram
The following figure shows the the wiring and block diagram of SM 326; DO 10 x DC 24V/2A.
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Figure 8-42 Wiring and block diagram of SM 326; DO 10 x DC 24V/2A
The potential groups 1L+, 2L+ and 3L+ can be supplied by separated power supply units but
also by one common power supply unit.
Channel numbers
The channel numbers are used to identify the outputs and to assign channel-specific
diagnostic messages.
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Figure 8-43 Channel numbers for SM 326; DO 10 x DC 24V/2A