Xtralis VESDA VLS - Page 70

VESDAnet Connection
4-2 VESDA Student Workbook
VESDAnet
• VESDAnet is a bidirectional data communication network between connected VESDA
devices
• All VESDAnet devices can be viewed from a single location
• All VESDAnet devices can be programmed from a single location
• It is recommended that RS-485 (Belden 9841 - 120 Ohm) twisted pair cables be used
for including the devices in the network
• Network cables are terminated at the VESDAnet A and B Terminals
• Cabling from one VESDA-E device is brought into the detector at one terminal and
looped out to another device on VESDAnet from the other terminal
RS-485 Network
RS-232 Serial Output
VHX
-1200 (Xtralis VSC, VSM4)
3
rd
Party Integration:
VHX
-1320 (Access Protocol)
VHX
-1420 (MODBUS Type 3)
FW
-HSSX1 (FireWorks)
Network with High Level Interface (HLI)