Siemens SIMATIC Box PC 820 - Page 118

3-12
Box PC 820 / PC FI45 V2, Manual
A5E00051531-03
Connector for LED (not Assigned) Plug Connector ST3
Pin Description
1 LED Power (anode)
2 V
CC
3 GND
4 Beeper
5 LED3 (direct, o.k.)
6 LED3 cathode
7 LED2 (direct, o.k.)
8 LED2 cathode
9 LED1 (direct, o.k.)
10 LED1 cathode
Connector for Input Switches and Direct Key Outputs (Standard Setting: Unassigned)
Plug Connector ST4
Pin Description
1 Switch1
2 Switch2
3 Switch3
4 Switch4
5 GND
6 D-Dat
7 D-Latch
8 D–CLK
9 GND
10 GND
Output Keyboard Matrix XSocket Connector ST5
Pin Description
1 X0
2 X1
3 X2
4 X3
5 X4
6 X5
7 X6
8 X7
Keyboard Controller (PC FI45 V2)
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