Siemens SIMATIC Box PC 820 Manual page 132

Direct Key Module (Optional with FI45)
DP Port (9 -Pin Sub D Socket Connector)
The port pinout conforms to PROFIBUS requirements
Figure 4-1
Pin no.
designation
Pin 1 n.c.
Pin 2 n.c.
Pin 3 LTG_B
Pin 4 RTS
Pin 5 M5EXT
Pin 6 P5EXT
Pin 7 n.c.
Pin 8 LTG_A
Pin 9 n.c.
4-8
5
9
6
1
DP Port
Signal
not assigned
not assigned
Signal line B of direct key module
TTL output signal of direct key module. Signal '1'
is active when direct access key module transfers
data.
M5EXT ground of 5V isolated power supply
The current load of an external consumer connec-
ted between P5EXT and M5EXT must not exceed
a max. of 90mA.
P5EXT supply (+5V) of isolated 5V power supply.
The current load of an external consumer connec-
ted between P5EXT and M5EXT must not exceed
a max. of 90mA.
not assigned
Signal line A of direct module
not assigned
Description
Box PC 820 / PC FI45 V2, Manual
Input/
Output
–
–
Input/output
Output
Output
Output
–
Input/output
A5E00051531-03