Arkon AIMB-258 CMOS1 Clear Cmos, J1LCD Power 3.3 V/5.5 V Selection, PSON1 ATX, AT Mode Selection

Table 1.3: JSETCOM2: COM2 RS232/422/485 Mode Selection

RS-232 Configuration (default)

RS-422 Configuration

RS-485 Configuration

Table 1.4: CMOS1: Clear CMOS

Pins	Result
1-2*	Keep CMOS data*
2-3	Clear CMOS data
*Default	1	1
	Keep CMOS data	Clear CMOS

Table 1.5: J1:LCD Power 3.3 V/5.5 V Selection

Closed Pins Result

1-2*	3.3 V*
2-3	5 V
*Default	1	1
	3.3 V, 1-2 closed	5 V, 2-3 closed

Table 1.6: PSON1: ATX, AT Mode Selection

Closed Pins Result

1-2	AT Mode
2-3*	ATX Mode*
*Default	1	1
	AT Mode, 1-2 closed	ATX Mode, 2-3 closed

AIMB-258 User Manual 10