B&B Electronics manual Setting the 485DSS Address, Address Switch, DIP Switch

If you were writing a program in BASIC to request status from address 5 decimal, you might form a string like this:

DSS05RS$ = CHR$(19) + "0" + "5" + CHR$(6)

You could then send DSS05RS$ to request status from 485DSS address 5. Use similar strings for requesting status from other individual 485DSS's.

If you were writing a program in BASIC to request status from all the 485DSS's on the network, you might form a string like this:

DSSALLRS$ = CHR$(19) + CHR$(18) + CHR$(18) + CHR$(6)

You could then send DSSALLRS$ to request status from all the 485DSS's on the network.

Setting the 485DSS Address

Assign each 485DSS on the RS-485 network its own unique address. To set the address use the eight position DIP switch on the 485DSS labeled “SW1”. Refer to Figure 2 for the location of the switch. To access this switch, you will need to remove the top cover of the 485DSS. Insert a small screwdriver in the slot in the side of the cover and twist to remove it. Each switch position is equal to a specific weight value. Set the 485DSS to any decimal address from 0 to 255. To assign the new address to the 485DSS, cycle the power on the unit.

Table 4. Address Switch

	DECIMAL	HEX
DIP Switch 1	WEIGHT	WEIGHT
1	1	1
2	2	2
3	4	4
4	8	8
5	16	10
6	32	20
7	64	40
8	128	80

OFF = Weight False	ON = Weight True
Factory Default Address = 0
14	485DSS3298 Manual

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