Saia-Burgess Controls AG
Hardware manual for PCD3 series │ Document 26-789 ENG19│ 2018-06-29
Connections on orange terminal block
PCD3.Mxxx0 Classic CPU and expansion enclosure
3-38
3
3.15 Connections on orange terminal block
For all CPU types
Terminal block(Item no. 440549950) for
power supply, watchdog, interrupt inputs and port 2
Probus
Pin Signal Explanation Signal Wiring
1 D
Port 2
RS-485 up to 115.2kbit / s as free
user interface or Profi-S-Bus up to
187.5kbits / s (except PCD3.M5440 and
PCD3.M5540)
RxD/TxD-N
A
green
2 /D RxD/TxD-P
B
red
3 Int0
2 interrupt inputs 24VDC or
1 quick counter 24 VDC
4 Int1
5 WD
Watchdog
6 WD
7 +24V
Power supply
8 GND
RS-485 terminator switch
Switch
position
Description Explanation
left O without terminators
right C with terminators
3.15.1 RS-485 (Port 2)
See chapter 5.3.9 General information and chapter 5.1 General information.
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