Use of the N-485 interfaces will increase communication speed as well as data integrity. For those high security applications involving supervised communications, an N-485 interface is a must.

The N-485-API-2 (Access Control Panel Interface) provides an RS485 communications interface to your 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. Northerns 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.

Benefits

• The N-485 interfaces can be used with your current N-1000-II and any version of PC-PAK or WIN-PAK software. The new ACK/NAK protocol requires WIN-PAK V1.12 or higher.
  
• All data communications are continually supervised when using the ACK-NAK protocol.
  
• The API interface provides automatic buffering of panel information upon loss of communicaion to the host computer, HUB or PCI (using ACK-NAK).
  
• Distances of up to 4000 can be reached with the interfaces.
  
• Built-in features make them highly immune to outside interferences.