Quatech DS-200/300 user manual Enabling or disabling ports, Recommended addresses for serial ports

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.

PORT	TYPICAL I/O ADDRESS	NOTES
COM1	03F8 hex	Factory default for Serial 0.
COM2	02F8 hex	Factory default for Serial 1.
COM3	03E8 hex	Recommendations only. No official standards
		exist for COM3 and COM4.
COM4	02E8 hex

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.

Enabled	Disabled	Serial 1 uses SW2
		Serial 2 uses SW4

SW2 or SW4

ON

SW2 or SW4

ON

1 2 3 4 5 6

1 2 3 4 5 6

Disabled	Enabled
	(default)

Figure 8 --- Enabling and disabling ports

DS-200/300 User's Manual 4-3