Siemens DI 16x24VDC ST Manual page 12

Connecting
3.1 Wiring and block diagram
Wiring: 1-wire connection
The following figure shows the block diagram and an example of the terminal assignment of
the digital input module DI 16x24VDC ST on the BaseUnit BU type A0 without AUX terminals
(1-wire connection).
①
1-wire connection
②
Backplane bus interface
③
Input electronics
④
Color-coded label with color code CC00
(optional)
⑤
Filter connection supply voltage (only when
light-colored BaseUnit is present)
P1, P2, AUX Internal self-assembling voltage buses
Connection to left (dark-colored BaseUnit)
Connection to left interrupted (light-colored
BaseUnit)
Image 3-1 Wiring and block diagram for 1-wire connection of encoders
12
DI Input signal, channel n
n
L+ 24 V DC (infeed only with light-colored
BaseUnit)
M Ground
DIAG Error or diagnostics LED (green, red)
.0 to .15 Channel status LED (green)
PWR Power LED (green)
Digital input module DI 16x24VDC ST (6ES7131-6BH00-0BA0)
Manual, 12/2015, A5E03573442-AD