Siemens Simatic CFU Commissioning Manual page 43

The following tables show the wiring schemes, depending on how the freely configurable
channels are used.
● Digital input
● Digital output
You can find information on connecting the cables in section "Selecting connection system
(Page 44)".
Digital input
Table 7-1
Wiring scheme
Table 7-2
Wiring scheme
Table 7-3
Wiring scheme
SIMATIC CFU
Commissioning Manual, 07/2018, A5E39252870-AC
7.4 Connecting the device to the CFU PA (PROFIBUS PA field device, sensor, actuator)
Wiring variant "Digital input with 1-wire interface"
Wiring variant "Digital input with 2-wire interface"
Wiring variant "Digital input with 3-wire interface"
Terminals
● <n>+: Sensor supply,
channel DI<n>
● <n>-: Input signal,
channel DI<n>
Terminals
● <n>+: Sensor supply,
channel DI<n>
● <n>-: Input signal,
channel DI<n>
Terminals
● M: Reference potential for
the sensor supply
● <n>+: Sensor supply,
channel DI<n>
● <n>-: Input signal,
channel DI<n>
Connecting
Connection
Sensor supply for multiple chan‐
nels:
● internal (Us.n)
Connection
Sensor supply for a channel of
the CFU
Connection
Sensor supply for a channel of
the CFU
43