INSTALLATION
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Pin assignments - modem/Ethernet The EC 921 and EC 922 versions have a modem connection on the connection board (see previous page). In this way, (depending on whether the device is equipped with an analog modem or a TCP/IP module), it can be connected to the telephone network or a computer network (Ethernet). Fixed line connection:
Ethernet:
ISDN connection
For comparison: RJ 45 socket
28
RX RJ 45 plug socket
TX +
8
1
8
1
orange/white orange green/white green
RJ 45 socket RJ 45 plug
RX +
8
7
6
5
4
3
2
1
RX + RX TX TX+
terminating resistors depending on wiring
TX -
Pin assignments of the serial interface Pin 1 2 3 4 5 6 7 8 9
RS 232 RxD TxD GND DSR CTS -
RS 422 +Vdc TxD A RxD A GND TxD B RxD B -
(to CU 900) (+) (B麓) (B) (-) (A麓) (A)
RS 485 +Vdc A GND B -
............................................................................................................................................................................................................... Manual EC 900 路 EN03 路 2012-03