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