Roberts Gorden 10081601NA Rev H 12/11 service manual 5.2 RS-485Converter for Central Controller

SECTION 5: COMMUNICATIONS

5.2 RS-485 Converter for Central Controller

For remote on-site viewing of system status and settings of any controller, use the RS-485 converter to connect a single PC (9 pin serial port) to the RS- 485 terminals on the Central Controller. This will allow communication between one PC and any of the ULTRAVAC™ controllers on the network. For RS-485 converter wiring details see Page 31, Figure 16 and see Page 35, Section 5.5. Wiring between the RS- 485 converter to the controller should not be more than 400' (122 m) in length.

For communication cable requirements see Page 22, Section 3.3.

If multiple ULTRAVAC™ controllers are being used, the additional controllers communicate to controller #1 through RS-485 communication wiring arranged in-series from one controller to the next. See Page 35, Section 5.5. This allows multiple controllers to be controlled from a PC through a single communication package at the central controller.

FIGURE 16: RS-485 PC Connection

Description	Part Number
RS-485 Converter Package with	10080430
Power Supply
	31 of 62