Hardware manual PCD7.LRxx-PG5 room controller │ Document 27-653; version ENG07 │ 2019-03-21
Saia-Burgess Controls AG
Communication
5
5-4
RS-485 interfaces (ports 0 + 1) in general
5.3
RS-485 interfaces (ports 0 + 1) in general
Up to two RS-485 interfaces can be used independently without additional hard-
ware.
S-Bus and Modbus communication modes can be implemented via port 0 and/or
port 1.
AO0…
GND
0-10V
V
UI0…
0-10V
GND
Dig.
NTC
V
RS485 / Port 0
/D A +
D B -
RO3 IN3 RN RN IN0 RO0 IN1 RO1 IN2 RO2
TN T~ TO0 TN TO1
RUN/HALT
Power Supply
---
230 V In
24 VAC In
24 VAC Out
Sylk Bus
RS485 / Port 1
USB
T1 R1 T0 R0 !
1
L
2
N
3
24V~
4
24V0
5
TN
6
T~
7
TO0
8
TN
9
TO1
10
RC3
11
IN3
12
RN
13
RN
14
IN0
15
RC0
16
IN1
17
RO1
18
IN2
19
RO2
AO0
26
24V~
27
GND
28
AO1
29
AO2
30
24V~
31
UI0
34
GND
35
UI1
36
/DA+
40
/DB-
41
GND
42
UI2
37
GND
38
UI3
39
GND
32
AO3
33
WM1
20
WM2
21
24V~
22
/DA+
23
/DB-
24
GND
25
Port 0
Port 1
/R
X -
/T
X
R
X -
T
X
SGND
/R
X -
/T
X
R
X -
T
X
SGND
/DA+
23
DB-
24
GND
25
/DA+
40
DB-
41
GND
42
R
S-485
Bu
s-c
ab
le
R
S-485
Bu
s-c
ab
le
RS-485 terminals for port 1 and port 0
All PCD7.LRxx-P5 room controller communication/signal terminals (except for the
Sylk bus – see following table) support cables with 1 × 2.5 mm
2
or 2 × 1.5 mm
2
.
Each of the two bus lines are connected to
each other as shown, e.g. using a three-con-
nection terminal (including a connection
cable for this cable group and its mounting
on the connection block).
Deviating from this rule can lead to a faulty
electrical connection. Local wiring regula-
tions can take precedence over this recom-
mendation.
Wire terminal example
