RTS WM300 Dokumentacja Strona 50

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Chapter 2 Specification of Communication port for CPU module
2 – 36
(3) Pin arrangement for RS-422 / 485
EHV-CPU
Serial port
SG1
N.C.
N.C.
TX
TXN
RXN
RX
N.C.
[1]
[2]
[3]
[4]
[5]
[6]
[7]
[8]
SG1
N.C.
N.C.
TX
TXN
RXN
RX
N.C.
EHV-CPU
Serial port
[1]
[2]
[3]
[4]
[5]
[6]
[7]
[8]
Figure 2.35 Signal connection diagram for RS-422
EHV-CPU
Serial port
A
B
Relay terminal Relay terminal
Twist pair cable
[1]
[2]
[3]
[4]
[5]
[6]
[7]
[8]
SG1
N.C.
N.C.
TX
TXN
RXN
RX
N.C.
SG1
N.C.
N.C.
TX
TXN
RXN
RX
N.C.
EHV-CPU
Serial port
[1]
[2]
[3]
[4]
[5]
[6]
[7]
[8]
Figure 2.36 Signal connection diagram for RS-485
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