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Detailed descriptions
16.1 Internal components
16.1.3.6
PROFIBUS
PROFIBUS interface, 9-pin (socket)
Pin no.
1-2
3
4
5
6
7
8
9
16.1.3.7
CAN bus
CAN bus port, 9-pin (socket)
Pin no.
1
2
3
4
5
6
7
8
9
NOTICE
The permitted maximum length of the CAN bus cable is 30 meters.
110
Short description
NC
LTG_B
RTS_AS
GND
P5V_dp_fused
NC
LTG_A
RTS_PG
Short description
-
CAN_L
CAN_GND
-
-
-
CAN H
-
-
Description
Not connected
Data line (I/O)
Turn on PLC transmitter (O)
Ground isolated
+5 V (fused) isolated
Not connected
Data line (I/O)
PG Request to send (O)
Description
Reserved
CAN bus signal (L active)
CAN station ground
Reserved
Reserved
Reserved
CAN bus signal (H active)
Reserved
Reserved
Operating Instructions, 04/2009, A5E02414743-01
SIMATIC IPC427C
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