Roberts Gorden 10081601NA Rev H 12/11 service manual 35 of

SECTION 5: COMMUNICATIONS

5.5 Communications Between Multiple ROBERTS GORDON® ULTRAVAC™ Controllers

If more than one ROBERTS GORDON® ULTRAVAC™ Controller is installed in a building, the controllers’ RS-485 communications must be wired in series. See Page 35, Figure 20. Connect the RS-485 terminal on controller #1 to the RS-485 terminal on controller #2 and so on in a daisy chain fashion. For communication cable requirements, See Page 22, Section 3.3

From a PC, by dialing into the modem on controller #1 or by connecting to controller #1 via RS-485 converter or TCP/IP communication module, the

system status and settings can be viewed for any of the controllers on the network.

The control board identification dip switch must be set on each ROBERTS GORDON® ULTRAVAC™ Controller. See Page 35, Figure 20 for dip switch settings. Contact Roberts-Gordon or your ROBERTS GORDON® independent distributor, if more than 20 controllers are connected.

FIGURE 20: Communications Between Multiple Controllers

Controller/Address	Dip Switch Order (1,2,3,4,5,6,7,8)
Number		Values (1=ON, 0=OFF)
1 (Central Controller)	10000000
2	01000000
3	11000000
4	00100000
5	10100000
6	01100000
7	11100000
8	00010000
9	10010000
10	01010000

Controller/Address	Dip Switch Order (1,2,3,4,5,6,7,8)
Number		Values (1=ON, 0=OFF)
11	11010000
12	00110000
13	10110000
14	01110000
15	11110000
16	00001000
17	10001000
18	01001000
19	11001000
20	00101000

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