7700 MultiFrame Manual
7707DT RS-232/422/485 Fiber Data Transceiver
Revision
1.8
Page - 7
7707DT-GPIO
(+) RS-485
(+) RS-422
IN
IN
IN
IN
IN
IN
IN
IN
IN
IN
IN
IN
IN
(+) RS-485
(+) RS-422
(+) RS-485
(+) RS-422
(+) RS-485
(+) RS-422
(-) RS-485
(-) RS-422
(-) RS-485
(-) RS-422
(-) RS-485
(-) RS-422
(-) RS-485
(-) RS-422
RS-232
RS-232
RS-232
GND
GND
GND
GND
(-) LTC
(+) LTC
(-) RS-422
OUT
OUT
OUT
OUT
OUT
OUT
OUT
OUT
OUT
OUT
OUT
OUT
OUT
(-) RS-422
(-) RS-422
RS-232
RS-232
RS-232
GND
GND
GND
GPO Common
(-) LTC
(+) LTC
CH 1
CH 2
CH 3
(+) RS-422
CH1
(-) RS-422
(+) RS-422
CH2
(+) RS-422
CH3
(+) RS-422
CH
1
RS
-4
2
2
CH
2
RS
-4
2
2
CH
3
RS
-4
2
2
CH4
RS
-4
2
2
GPI 1
GPI 2
GND
GPI 3
GPI 4
GPI 5
GND
GPI 6
GPI 7
GPI 8
GND
RS-232 IN
CH4
RS-232 IN
CH5
RS-232 IN
CH6
GND
RS-232 IN
CH7
RS-232 IN
CH8
GPO 1
GPO 2
GND
GPO 3
GPO 4
GPO 5
GND
GPO 6
GPO 7
GPO 8
GND
RS-232 OUT
CH4
RS-232 OUT
CH5
RS-232 OUT
CH6
RS-232 OUT
CH7
GND
RS-232 OUT
CH8
Figure 2-4: 7707DT-GPIO Terminal Block Signal Connections
2.2.2. Serial Data Connections
+RS485/+RS422 IN:
Positive RS-422 input, or RS-485 input/output. When the associated channel is
configured for use with RS-485, this pin becomes an RS-485 input/output. When the
associated channel is configured for use with RS-422, this pin becomes an RS-422 input.
-RS485/-RS422 IN:
Negative RS-422 input, or RS-485 input/output. When the associated channel is
configured for use with RS-485, this pin becomes an RS-485 input/output. When the
associated channel is configured for use with RS-422, this pin becomes an RS-422 input.
+RS422 OUT:
Positive RS-422 output. The RS-422 interface is usable while the associated channel is
configured for RS-422 use.
