Saia-Burgess Controls AG
Manual PCD7.D412DTPF & PCD7.D4xxxT5F │ Document 27-620 – Release ENG07 │ 2019-06-20
3-7
Logic Controller
Communications interfaces
3
3.1.2.1
PCD7.F110S Serial Interface Module RS-485/RS-422
Termination resistors can be connected (CLOSED) or disconnected (OPEN) with
slide switchs.
PCD7.F110S
RS-485 terminator
Slider
2
1
C
O
Open not terminated
(factory setting)
Slider
2
1
C
O
Closed terminated
RS-422 connection
Port x.1 -
10 pin spring-loaded terminal block
RS-422
PGND 10
TX 11
/TX 12
RX 13
/RX 14
PGND 15
RTS 16
/RTS 17
CTS 18
/CTS 19
PGND
TX
/TX
RX
/RX
SGND
RTS
/RTS
CTS
/CTS
Pin
RS-422
Peripherie-
device
Terminal
0 PGND
Tx
1
2
/Tx
Rx
3
4
/Rx
PGND 5
6
RTS
/RTS
7
8
CTS
/CTS 9
RS 485 connection
(Electrically connected RS-485 interface)
Port x.1 -
10 pin spring-loaded terminal block
RS-485
PGND
PGND
RX - TX
/RX - /TX
x0
x1
x2
RX - TX
/RX - /TX
GND
RS-485
RS-485
RS-485
Peripherie-
device
PCD Modul
Terminal
0 PGND
Rx-Tx
1
2
/Rx-/Tx
3
4
PGND 5
6
7
8
(SGD)
9
For more details, see Manual 26-740, section "Installation components for RS-485
Networks."