Installation and commissioning
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D000011142 en k – E65C CU-B1, B2, B4 – User Manual
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Withdrawing of connection wires
Never withdraw connecting wires with the terminal closed, since this could
damage the terminal.
5.4.2
Connecting the communication interfaces
Insert the connecting cable with the RJ12 connectors in the relevant sock-
ets (RS232 left, RS485 right) until the connectors can be heard to engage.
5.4.3
Pin allocation RS232
Connection to PC, terminal or laptop
Data receiver
Meter with CU-Bx
DB-9 socket
RJ12 socket
Pin Signal
Direction
Pin Signal
7 RTS
1 CTS
2 RxD
2 TxD
5 GND
3 GND
6 DSR
4 DTR
3 TxD
5 RxD
4 DTR
6 DSR
Significance of signals:
CTS
Clear To Send
RTS
Request To Send (for connection to modem)
TxD Transmitted
Data
RxD Received
Data
DTR
Data Terminal Ready (Data Terminal = PC, terminal, laptop)
DSR
Data Set Ready (Data Set = modem)
GND Signal
ground