Siemens Simatic S7-1500 Manual page 16

Connecting
3.1 Block diagram
Block diagram
The following figure shows the assignment of channels to addresses (input byte a and input
byte b).
①
Backplane bus interface
②
Microcontroller 1
③
Microcontroller 2
④
Reverse polarity protection
U Internal sensor supply n
Sn
DI Input bit n
n
Image 3-1 Block diagram of the F-DI 16x24VDC
16
L+ Supply voltage 24 V DC
M Chassis ground
CH Channel or LED channel status, channel diag-
nostics (green, red)
PWR LED supply voltage (green)
RUN RUN LED (green)
ERROR LED module diagnostics (red)
Digital input module F-DI 16x24VDC (6ES7526-1BH00-0AB0)
Manual, 01/2016, A5E03858068-AA