Liebert NX UPS System user manual OC485 Web Card Modbus, Jbus, IGM Net, Remote Alarm Monitor

Options—For Assembly Inside the UPS Cabinet

8.2OC485 Web Card – Modbus, Jbus, IGM Net

The OpenComms 485 Card facilitates SiteScan Web or Building Management Systems monitoring. The RS232 port is used for connection to a personal computer for setting up.

The RS-485 port supports IGM Net and Modbus/JBus protocols and maps the operation of the UPS including status, alarms and data (voltages, currents, frequency, power, power factor, temperatures etc.)

Figure 42 OC485 Web card

Table 28 NX communication options

		On the UPS
Physical	Labeled	LCD screen,	Monitoring
description	ID Name	under Settings,	Devices	Baud
of port	of Port	controlled by:	supported	rate	Comments
			Multiport 4	any
Top	Intellislot 2		Relaycard-int	any
		Comm 1
			OCWEB-LB		Not simultaneous with
Intellislot	(On Monitor Board)			2400
					Multilink in RS232-1
			Modbus/Jbus	2400
			Multiport 4	any
Middle	Intellislot 1		Relaycard-int	any
		Comm 2
			OCWEB-LB		Not simultaneous with
Intellislot	(On Monitor Board)			2400
					Multilink in RS232-2
			Modbus/Jbus	2400
			Multiport 4	any
Bottom	Intellislot 3	Comm 3	Relaycard-int	any
Intellislot	(On Monitor Board)		OCWEB-LB	2400
			Modbus/Jbus	2400
Top	RS232-1	Comm 1	Multilink Serial	9600	Not simultaneous with Web
DB9 port					card in top Intellislot.
Bottom	RS232-2	Comm 2	Service Software	9600	Not simultaneous with Web
DB9 port			(Reserved)		card in middle Intellislot.

8.2.1Remote Alarm Monitor

Status and alarm conditions are available on an optional remote alarm monitor (RAM) panel that is driven by volt-free alarm status contacts from an optional relay alarm board.

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