GW-2139M (Modbus TCP to BACnet MS/TP Gateway) User Manual
Version 1.0.0
Page
：
11
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3. Getting Started With GW-2139M
This chapter mainly describes the operation process of the GW-2139M.
3.1 Wiring Preparation
Before setting up the GW-2139M, please complete the necessary preparation about wiring.
Please follow Figure 2.1 wiring diagram, to wire the following items:
1. Power Supply : +10 VDC ~ +30 VDC
2. RS-485
：
D+ & D- (MSTP wiring)
3. RS-232
：
TxD / RxD / GND (Debug Port ; N, 8, 1 ; 115200 baud rate)
4. Ethernet
：
Connect the GW-2139M and computer into the same LAN through cable or
Ethernet Switch/Hub.
5. INIT
：
Connect to GND to initial mode. (Address IP:192.168.255.1)
6. FW
：
Connect to GND and insert RJ45 to download mode. (LED will be twinkled.)
Figure 3.1 GW-2139M Wiring Diagram
RS-485
F.G.
P.GND
PWR
D-
GND
RxD
RS-232
Power
Supply
L
i
n
k
/
A
c
t
1
0
/
1
0
0
M
INIT
D+
FW
TxD
