The standard addresses for serial ports COM1 and COM2 are listed in
Figure 7. Recommended addresses for serial ports COM3 and COM4 are
also listed. The switch settings for these addresses are shown in Figure 6.
02E8 hex
COM4
Recommendations only. No official
standards exist for COM3 and COM4.
03E8 hex
COM3
Factory default for Serial 1.
02F8 hex
COM2
Factory default for Serial 0.
03F8 hex
COM1
NOTES
TYPICAL I/O ADDRESS
PORT
Figure 7 --- Recommended addresses for serial ports
4.2 Enabling or disabling ports
Each port of the DS-200/300 may be individually enabled or disabled. To
enable a port, move the appropriate switch to the "ON" position. To
disable a port, move the switch to the "OFF" position. This is illustrated
in Figure 8 below.
The factory default configuration is both serial ports enabled.
Serial 1 uses SW2
Serial 2 uses SW4
Enabled
Disabled
1
2
3
4
5
6
ON
SW2 or SW4
1
2
3
4
5
6
ON
SW2 or SW4
Disabled
Enabled
(default)
Figure 8 --- Enabling and disabling ports
DS-200/300 User's Manual
5-4
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