User Manual

System limits

Building Technologies sst2.doc

Fire Safety & Security Products 12.2009

3.2 NK8222/NK8223/NK8225 system limits

Network capabilities (upstream towards management system host)

• Ethernet IEEE 802.3, 10Base-T, half-duplex, no auto-sensing or auto-

negotiation

• Single host transport protocols:

− CEI 79-5 type A and B (optional FEAL 64-bit encryption)

− CMSDL/IP

− BACnet/IP (NK8225 only)

• Multiple hosts (up to four) transport protocols:

− CMSDL/IP

− BACnet/IP (NK8225 only)

• DHCP is currently not supported. A static IP address is required.

Serial capabilities (downstream towards subsystems and upstream towards

local management system host)

NK8223/NK8225: The maximum number of serial lines is 4, allowing connection to

up to 4 local units (intrusion, access control, fire, gas detection, CCTV control

units). Two serial lines are available on the CPU module and two on an expansion

module. The serial lines can also be used for a local host or a dial-up host connec-

tion.

NK8222: The maximum number of serial lines is 2 (on the CPU module). Only one

connection to a local unit (intrusion, access control, fire, gas detection, CCTV con-

trol units) is allowed. The second line can be used for a local host or a dial-up con-

nection.

The first serial port can be configured as an RS232-interface using connector

COM1 or as an RS485-interface using connector CN4.

Interaction capabilities

NK822x provides programmable interaction programs, including single or multiple

triggers (incoming events) and single or multiple effects (outgoing control actions).

Interactions are possible between locally connected subsystems.

The NK8225 can provide network-wide interaction capabilities between other

BACnet NK82xx units.

• Subsystems supported: see list on page 10.

•

Logical combinations: AND, OR, XOR, NOT

• Delay of effects (wait): configurable 0…6500 sec.

• Max. # of interactions: 1000

• Total # of field points used in triggers/effects: 5000

• Max. # of field points/interactions that can be combined in a trigger expression:

255

Local I/O

• Up to 16 digital inputs (2 DF8040 modules)

• Up to 8 digital outputs (1 DF8020 module)

• Power supply supervision (1 DF8090 module)