Hardware Information
Release 11/02
7-12
SIMATIC Panel PC 870 Computing Unit, Equipment Manual
MPI/DP port, X400
The MPI/DP port on the computer unit is assigned as follows:
Connect
or
Pin
No.
Short
Name
Meaning
Input/
Output
1
NC
Not Connected
-
2
NC
Not Connected
-
3
LTG_B
Signal lead B of MPI module
Input/
Output
1
6
4
RTS_A
S
RTSAS, control signal for received data
stream. The signal is ’1’ active when the
directly connected AS is sending.
Input
5
M5EXT
M5EXT return conductor (GND) of 5 V
supply.
Output
6
P5 EXT
P5EXT supply (+5 V) of 5 V supply.
Output
5
9
7
NC
Not Connected
-
8
LTG_A
Signal lead A of MPI module
Input/
Output
9
RTS_P
G
RTS output signal of the MPI module. The
signal is ’1’ when the PU is sending.
Output
Shield
On connector casing
Note
The current load by an external load connected between P5EXT and M5EXT may be
max. 90 mA.
Summary of Contents for Simatic PC Panel PC 870
Page 4: ...Chapter For your notes ...
Page 12: ...Contents Release 11 02 xii SIMATIC Panel PC 870 Computing Unit Equipment Manual ...
Page 94: ...Fault Diagnosis Release 11 02 6 10 SIMATIC Panel PC 870 Computing Unit Equipment Manual ...
Page 130: ...Hardware Information Release 11 02 7 36 SIMATIC Panel PC 870 Computing Unit Equipment Manual ...
Page 154: ...Index Release 11 02 Index 4 SIMATIC Panel PC 870 Computing Unit Equipment Manual ...