GW-5492/GW-5493 User’s Manual
V1.01 2011/09/01
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1. General Information
1.1 BACnet Introduction
BACnet (Building Automation and Control Networking) protocol has been designed specifically to
meet the communication needs of building automation and control systems for applications such as
heating, ventilating, air-conditioning control…etc. The GW-549x gateways contains a large number of
BACnet objects (AI, AO, AV, BI, BO, BV, MSI, MSO, MSV) gives you flexibility in mapping Modbus RTU
registers to any combination of BACnet objects. Multiple BIBBs (DS-RP-B, DS-RPM-B, DS-WP-B,
DS-WPM, DS-COV-B…etc.) are supported. All the data transfer is configurable using a standard Web
browser.
1.2 About GW-5492
GW-5492 is a fully configurable universal Modbus RTU to BACnet/IP gateway. The GW-5492
includes BACnet/IP Server and Modbus RTU Master which is used to make Modbus RTU devices
accessible on a BACnet network.
1.3 About GW-5493
GW-5493 is a fully configurable universal Modbus RTU to BACnet/IP gateway. The GW-5493
includes BACnet/IP Server and Modbus TCP Client which is used to make Modbus TCP devices
accessible on a BACnet network.
1.4 Hardware Specification
GW-5492
GW-5493
System
CPU
32-bit
SDRAM
64 MB
Flash
64 MB
COM1
RS-232 (RxD, TxD, GND); Non-isolation
COM2
RS-485 (D+, D-)2500 V
DC
;
isolated
Not use
Ethernet
10/100Base-TX Ethernet Controller
Protocol
Modbus
Modbus RTU Master
Modbus TCP Master
BACnet
BACnet/IP Slave
BACnet Objects
AI, AO, AV, BI, BO, BV, MSI, MSO, MSV (Maximum: 200 each)
