Roberts Gorden NEMA 4 5.2 RS-485Converter for Central Controller, RS-485PC Connection

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 21, Figure 14 and see Page 25, Section 5.5

FIGURE 14: RS-485 PC Connection

For communication cable requirements see Page 12, Section 3.3.5.

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 25, Section 5.5. This allows multiple controllers to be controlled from a PC through a single communication package at the central controller.

To Controller #2

-	8
+
-	7
+
-	6
+ - +
	UNIVERSAL 5
+ -	INPUTS 4
-	3
+
-	2
+
-	1
+

OFF ON	OUT IN
10VDC	499 OHM

			RS232 DIRECT
			AUX POWER
			RS485 COMM
CPU	ADDRESS	RESET	METER
		OH	INPUTS
		CD
		RI

OUT IN 4 3 2 1

OUT IN G +32 +5

G G

G

REF -

+REF -

+

+ - + - + - + -

Ground Shield

RS-485 adapter power supply
(supplied with RS-485 adapter)	(+)

(-)

Wire with white stripe to positive terminal

RS-485 Adapter		LED
		single
	+V gnd shld B A

25-pin male to 9-pin female adapter (supplied with RS-485 adapter)

Dip Switch #1	9-Pin Female
set to ON

1	2	3	4
+ -	+ -	+ -		+ - Central Controller

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

Windows® Compatible PC

21