User Manual
Industrial Ethernet Serial Gateway
Modbus Serial/TCP Series
WWW.SSTCOMM.COM
7
2.2 Indicators
Indicators
Status
Descriptions
GT200-MT-
RS
RX
Blinking(Green)
Serial port is receiving data
TX
Blinking (Green)
Serial port is transmitting data
GT200-MT-
2RS
Ⅰ
RX blinking(Green)
Serial port
Ⅰ
is receiving data
TX blinking (Green)
Serial port
Ⅰ
is transmitting data
Ⅱ
RX blinking (Green)
Serial port
Ⅱ
is receiving data
TX Blinking(Green)
Serial port
Ⅱ
is transmitting data
Modbus
Serial/TCP
series
ENS
Green on
Slave mode: At least one Modbus TCP
connection has been established;
Master mode: Modbus TCP connection has
been established
Blinking(Green)
Slave mode: Modbus TCP no connection;
Master mode: Modbus TCP connection has
not been established
Blinking(Red)
Modbus TCP connection is disconnected and
no longer exists; Obtain IP config via DHCP
Blinking(Red)
（
lasts 3 seconds
）
Modbus TCP connection is disconnected
SNS
Green on
Serial port ready to
transmit and receive data
Blinking(Red)
Automatic routing conflict
Red on
Equipment failure or firmware update failed
ENS (Orange) and
SNS (Orange)
（
Orange: Red and
green light on at the
same time
）
Simultaneously on
Start status
Blink alternately
Configuration Mode
Blink alternately
(lasts 3 seconds
）
Using locate function
ENS on, SNS off
Firmware update mode
2.3 DIP switch
The DIP switch is located at the bottom of the gateway, bit 1 is mode bit and bit 2 is function bit.
