7700 MultiFrame Manual
7707DT RS-232/422/485 Fiber Data Transceiver
Revision
1.8
Page - 17
7707DT Version
7707DT-GPIO Version
LED 1
RS-422/485 Channel 1
LED 2
RS-422/485 Channel 2
LED 3
RS-422/485 Channel 3
LED 4
RS-422/485 Channel 4
LED 5
RS-232 Channel 1
LED 6
RS-232 Channel 2
LED 7
RS-232 Channel 3
LED 8
LTC
LED 1
RS-422/485 Channel 1
LED 2
RS-422/485 Channel 2
LED 3
RS-422/485 Channel 3
LED 4
RS-422/485 Channel 4
LED 5
RS-232 Channel 1
LED 6
RS-232 Channel 2
LED 7
RS-232 Channel 3
LED 8
RS-232 Channel 4
LED 9
RS-232 Channel 5
LED 10
RS-232 Channel 6
LED 11
RS-232 Channel 7
LED 12
RS-232 Channel 8
LED 13
LTC
The 7707DT-GPIO provides additional status indicator modes, where each LED describes the state of the
respective GPI or GPO channel.
To change the card-edge LED indicator mode, select the
STAT
menu item in menu level 1. Toggle to the
desired status indication selection shown in the list below. Press the pushbutton to apply the displayed
selection and return to menu level 1.
STAT
DIO
DI
DO
GPI
GPO
DIO
Combines presence indications of serial data inputs and
outputs.
DI
Input data presence indication indicating signal transitions.
DO
Output data presence indication indicating signal transitions.
GPI
Indication of GPO states. Active LED indicates an active low
GPI.
GPO
Indication of GPI states. Active LED indicates an active low
GPO.
The factory default status display is
DIO
.
When
DI
mode is selected, the card edge signal presence LEDs represent input signals coming in to the
card for the channels. When
DO
mode is enabled, these LEDs represent signals coming out of the card.
When
DIO
is selected,
DI
and
DO
indications are combined to illuminate the LEDs accordingly. These
DI
,
DO
, and
DIO
modes affect the status globally. You can not select each mode independently on each
channel.
For example: Channel 5 has a signal coming in from a serial device. If set to
DI
mode, the corresponding
LED will turn on. If set to
DO
mode, the LED will turn off (unless there is bi-directional communication
from the other side).
DIO
mode will cause the LED to turn on again because of its
DI
and
DO
combination.
