The N-485-API-2 (Access Control Panel Interface) provides an RS485 communications interface to clients' existing N-1000-II. The N-485-API-2 interface converts the 20mA current loop supplied by the N-1000-II to an RS485 signal which can be used on the multi-drop line. RS485 multi-drop line can support usp to 31 RS485 nodes per COM port system.
The N-485-PCI-2 and N-485-HUB-2 interfaces convert RS485 to RS232, and both come with plug-in power supply. The N-485-PCI-2 is used at the computer for a direct connect system. The N-485-HUB-2 is utilized with an auto-dial modem at a remote location.
Engineered Systems International, 300 Plover Rd., Plover, WI 54467. Tel: 715-342-9000; Fax: 715-342-9002.