CHAPTER 3: SETTING UP COMMUNICATION CARDS
RS-232 ADAPTER
D400 SUBSTATION GATEWAY USER’S MANUAL
GENERAL
35
Figure 9: Switch SW1/SW2 configuration for port DTE (default)
Figure 10: Switch SW1/SW2 configuration for port DCE
Switch SW3/SW4 configuration
Switches
SW3
(for Port 2) and
SW4
(for Port 1) control the signals on Pins 4 and 6 of the RS-
232 port. Each switch contains four switch positions that can each be set to
ON
or
OFF
to
select the appropriate function for the port option.
Table 5: RS-232 Card Switch SW3/SW4 Settings
The switch positions are listed for:
•
DTE (Pin 4 DTR Output to DCE and Pin 6 DSR Input from DCE). See Figure 11.
•
DCE (Pin 4 DTR Input from DTE and Pin 6 DSR Output to DTE). See Figure 12.
•
IRIG-B Enable (on Pin 4) and Ground (on Pin 6). See Figure 13.
Figure 11: Switch SW3/SW4 configuration for port DTE (default)
1
2
3
4
5
A
B
1
2
3
4
5
A
B
Function
Pin 6 Signal
SW3/SW4 Positions
Pin 4 Signal
SW3/SW4 Positions
1
2
3
4
5
6
7
8
DTE (default)
DSR Input
OFF
OFF
ON
OFF
DTR Output
OFF
ON
OFF
OFF
DCE
DTR Output
OFF
ON
OFF
OFF
DSR Input
OFF
OFF
ON
OFF
IRIG-B Enable
Ground
OFF
OFF
OFF
ON
IRIG-B Output
ON
OFF
OFF
OFF
1
2
3
O N
4
5
6
7
8