Hardware manual PCD7.LRxx-PG5 room controller │ Document 27-653; version ENG07 │ 2019-03-21
Saia-Burgess Controls AG
Communication
5
5-7
RS-485 interfaces (ports 0 + 1) in general
5.3.3
Requirements for the S-Bus (RS-485) shielding
The shielding for each S-Bus segment can only be connected to the electrical
system ground at one point. The following shows an example using a PCD3 as a
master station.
3020
PCD7.LRxx-P5
Bus shielding: twist and
connect to GND
S-Bus: shielded twisted pair cable
Bus shield:
connected to GND
port
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
RO3
11
IN3
12
RN
13
RN
14
IN0
15
RO0
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
3
4
5
6
7
8
9
10 11 12 13 14 15 16 17 18 19
40 41 42
26 27 28 29 30 31 32 33
34 35 36 37 38 39
20 21 22
23 24 25
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
RO3
11
IN3
12
RN
13
RN
14
IN0
15
RO0
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
3
4
5
6
7
8
9
10 11 12 13 14 15 16 17 18 19
40 41 42
26 27 28 29 30 31 32 33
34 35 36 37 38 39
20 21 22
23 24 25
PCD7.LRxx-P5
PCD7.LRxx-P5
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
RO3
11
IN3
12
RN
13
RN
14
IN0
15
RO0
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
3
4
5
6
7
8
9
10 11 12 13 14 15 16 17 18 19
40 41 42
26 27 28 29 30 31 32 33
34 35 36 37 38 39
20 21 22
23 24 25
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
RO3
11
IN3
12
RN
13
RN
14
IN0
15
RO0
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
3
4
5
6
7
8
9
10 11 12 13 14 15 16 17 18 19
40 41 42
26 27 28 29 30 31 32 33
34 35 36 37 38 39
20 21 22
23 24 25
Electrical system ground
The S-Bus shielding can only be connected to the system ground at one point
– usually the building controller, if there is one.
To avoid problems with large differences in potential between the room control
-
lers, the shielding of the S-Bus cable should be connected to the GND of the room
controllers.
5.3.4
RS-485 interface port0
Example of a larger network in home automation
Port0 is recommended as a standard connection with superordinate master PCD.
5560
Saia PCD3.M
Sai
a P
CD3
Sai
a P
CD3
Sai
a P
CD3
Sai
a P
CD3
Sai
a P
CD3
Sai
a P
CD3
Sai
a P
CD3
Sai
a P
CD3
PCD3
RO3 IN3 RN RN IN0 RO0 IN1 RO1 IN2 RO2
RUN/HALT
Sylk Bus
RS485 / Port 1
UI0…
0-10V
GND
Dig.
NTC
V
TN T~ TO0TNTO1 TO2 TNTO3
RS485 / Port 0
C1+
/D A +
D B -
GND
C1-
AO0…
GND
0-10V
V
Power Supply
24 VAC
Out
---
230 V
24 VAC
---
USB
T2
R2 T1 R1 !
1
L
2
N
3
24V~
4
24V0
5
24V~
6
24V0
7
TN
8
T~
9
TO0
10
TN
11
TO1
12
TO2
13
TN
14
TO3
15
RC3
16
RO3
17
IN3
18
RN
19
RN
20
IN0
21
RO0
22
IN1
23
RO1
24
IN2
25
RO2
/DA+
26
DB-
27
GND
28
24V~
29
/DA+
62
DB-
63
GND
64
WM1
30
WM2
31
AO0
32
AO1
34
AO2
36
AO3
38
AO4
40
AO5
42
GND
33
24V~
35
GND
37
24V~
39
GND
41
24V~
43
24V~
44
GND
46
UI1
48
UI2
50
GND
52
UI5
54
LED
45
UI0
47
GND
49
UI3
51
UI4
53
GND
55
UI6
56
GND
58
UI9
60
UI7
57
UI8
59
GND
61
1
2
5
6
7
8
9
10 11 12 13 14
16 17 18 19 20 21 22 23 24 25
33 35 37 39 41 43
47 49
53 55 57 59 61
51
26 27 28 29
30 31
32 34 36 38 40 42
46 48
52 54 56 58 60
50
62 63 64
RO3 IN3 RN RN IN0 RO0 IN1 RO1 IN2 RO2
RUN/HALT
Sylk Bus
RS485 / Port 1
UI0…
0-10V
GND
Dig.
NTC
V
TN T~ TO0TNTO1 TO2 TNTO3
RS485 / Port 0
C1+
/D A +
D B -
GND
C1-
AO0…
GND
0-10V
V
Power Supply
24 VAC
Out
---
230 V
24 VAC
---
USB
T2
R2 T1 R1 !
1
L
2
N
3
24V~
4
24V0
5
24V~
6
24V0
7
TN
8
T~
9
TO0
10
TN
11
TO1
12
TO2
13
TN
14
TO3
15
RC3
16
RO3
17
IN3
18
RN
19
RN
20
IN0
21
RO0
22
IN1
23
RO1
24
IN2
25
RO2
/DA+
26
DB-
27
GND
28
24V~
29
/DA+
62
DB-
63
GND
64
WM1
30
WM2
31
AO0
32
AO1
34
AO2
36
AO3
38
AO4
40
AO5
42
GND
33
24V~
35
GND
37
24V~
39
GND
41
24V~
43
24V~
44
GND
46
UI1
48
UI2
50
GND
52
UI5
54
LED
45
UI0
47
GND
49
UI3
51
UI4
53
GND
55
UI6
56
GND
58
UI9
60
UI7
57
UI8
59
GND
61
1
2
5
6
7
8
9
10 11 12 13 14
16 17 18 19 20 21 22 23 24 25
33 35 37 39 41 43
47 49
53 55 57 59 61
51
26 27 28 29
30 31
32 34 36 38 40 42
46 48
52 54 56 58 60
50
62 63 64
Ethernet
RS-485 S-Bus / Modbus
M
Sylk-Bus
Sylk-Bus
PCD7.RLxx-P5
PCD7.RLxx-P5
M
S
M
S
S
S
S
S
S
S
Room control
Room control
