1
Modem-Converter E1-L/S
© 2006 Cronyx
The following cable wiring schemes are recommended:
Cable without modem control
GND 5
TXD 3
RXD 2
RTS 7
CTS 8
DTR 4
CD 1
GND
TXD
RXD
RTS
CTS
DTR
DSR
CD
GND 5
TXD 3
RXD 2
RTS 7
CTS 8
DTR 4
DSR 6
CD 1
GND
TXD
RXD
RTS
CTS
DTR
DSR
CD
Cable with modem control
Use straight cable to connect to the COM port of the computer.
Alarm Port Connector
A DB-9 (female) connector is used for alarm port connection:
Pin allocation:
5 – open in no alarm state, closed to middle relay contact (9)
on alarm
4 – closed to middle relay contact (9) in no alarm state, open
on alarm
3 – to external input sensor
9 – middle relay contact
7, 8 – GND
1, 2, 6 –
reserved (must be leaved unconnected)
Alarm relay
(shown in no alarm state)
External input sensor
5
4
3
2
1
8
7
9
6
+5 VDC
Internal device circuits
Pin layout shown from outside of the device
The external input sensor connected to the modem must be isolated from other
electrical circuits. Failure to comply with this requirement may lead to modem
breakdown.
Содержание E1 - L/S
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