Siemens SIMATIC NET CP 5624 Operating Instructions Manual page 13

PIN assignment
The D-sub female connector has the following pin assignment:
PIN Short name
1 NC
2 NC (M24)
3 LTG_B
4 RTSAS
5 M5EXT
6 P5EXT
7 NC (P24V)
8 LTG_A
9 RTS
Shield
CP 5623/CP 5624
Operating Instructions, 12/2022, C79000-G8976-C281-06
Meaning
Socket pin 1 is not connected.
Socket pin 2 is not connected. With other MPI/DP components,
the return line of the floating 24 V power supply may be via this
pin.
Signal line B of the PROFIBUS connector.
RTSAS, input signal for direct MPI link. The control signal is "1"
active when the automation system connected over a special
MPI cable is sending.
M5EXT return line (GND) of the 5 V power supply and reference
potential for the signals RTSAS and RTS of the PROFIBUS
interface.
P5EXT power supply (+5 V) for the 5 V power supply.
(only for bus termination)
Socket pin 7 is not connected. With other MPI/DP components,
the P24V supply of the floating 24 V power supply may be via
this pin.
Signal line A of the PROFIBUS connector.
RTS output signal of the CP. The control signal is "1" active when
the device (PG or PC) is sending.
The shield is connected to components of the connector
housing.
Description of the device
1.3 PROFIBUS interface
Input/output
-
-
Input/output
Input
Output
Output
-
Input/output
Output
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