Moeller PS 416-BGT-4 Series, Hardware And Engineering, Page: 79 / 150

Engineering
76
02/98 AWB 27-1208-GB
Pin assignment
Figure 28: SBI interface, top view
Table 9: Meaning of signals
Wiring
Figure 26 and 27 show the usual wiring between the
SBI interface on the central unit and the R S485
interface of a Suconet K station or the RS 232
interface of a data terminal unit (RS 232).
PGND
TA/RA
TB/RB
5
2
4
3
1
6
7
8
9
+5 V
SBI
SGND
Pin RS 485 Function
1 – –
2 – –
3 TA/RA Send/receive data
4 PGND Potential ground over 100
Ω
5 SGND Signal ground for UM 1.5 interface converter
6 – –
7 TB/RB Send/receive data
8 – –
9 +5 V Voltage for UM 1.5 interface converter
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