Saia-Burgess Controls AG
User Manual PCD2.M4x60 │
Document 27-648
│ Edition ENG06 │ 2020-10-21
X2 – Isolated RS-485-Port/MPI
Communication ports
12-2
12
12.2
X2 – Isolated RS-485-Port/MPI
9-pole D-Sub-terminal (Port #2)
Do not
remove
M
emor
y
CPU
X2
MPI
X1
X3Ext
X4
0
16
32
48
O C
Error
Run
Halt
X8
X6
X5
X7
Slot A
X9
S1
Bat
t
M1
S2
PCD7FxxxS
M
emor
y
M
emor
y
M
emor
y
PCD2.M4560
PCD7.F7500
X2
9
6
1
5
Can be used as MPI interface or as
standard S-Bus RS-485.
S-Net / MPI / RS-485
D-Sub-Pin Signal
Explanation
9
6
1
5
1
PGND
GND
2
GND
0 V from 24-V supply voltage
3
RxD/TxD-P
1)
B (rot)
Receive/send data, positive pole
4
RTS/CNTR-P
Control signal for repeater(direction control)
5
SGND
1)
Data communication potential (Erde an 5 V)
6
+5 V
1)
Supply voltage for P-line terminating resistors
7
MPI24V
Output v24 V
8
RxD/TxD-N
1)
A (grün) Receive/send data, negative pole
9
Not used
1) For Profibus mandatory signals (must be provided by the user). Specially the both signals SGND and
+5V are provided by the PCD, if the Profibus configuration is correct.
`
Further details can be found in the manual
«26-740 Installations-Components for RS-485 Networks».