Sutron ModbusLink-M, Operation & Maintenance Manual

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Replace the enclosure lid and tighten the screws
To prevent damage while shipping, the antenna is not connected to the module. Please screw the antenna to
the RP-SMA connector on the top of the enclosure, till it is secure.
DO NOT OVERTIGHTEN THE
ANTENNA to prevent damage to the RP-SMA connector.
Configuring ModbusLink
The ModusLink module can be configured using a 10-pin to DB9 cable (6411-1382-24) connected to J5.
Any terminal program like HyperTerminal (Baud = 5700, parity = none, Handshaking = none) can be used to
configure the modules. The general command syntax is
<command> = <value><CR><LF>
Command value Response Description
AT -- OK Test RS232
communication with
module
Modbus Com = < value> value = RS232, RS485 > Modbus Com = value
Where value = the new modbus com
port
Set Modbus
communication port to
either RS85 or RS232
Modbus Baud = <value> <value> =57600 , 38400 ,
19200, 9600, 4800
>Modbus Baud = value
Where value = new baud rate
Set the baud rate for
the Modbus port
Modbus Parity = <value> <value> = odd, even,
none
>Modbus Parity = value
Where value = new parity setting
Set the parity for
Modbus
communication
Modbus Device = < value > <value> = master : Set
Modbus device as
ModbusLink-M
<value> = slave : Set
Modbus device as
ModbusLink-S
>Device type = value
value = Master if device is configured
as a Modbus master
value = slave if device is configured as
a Modbus master
Configure the module
as ModbusLink-M or
ModbusLink-S
(this command
requires the module to
be power cycled to
take effect)
Battery Connector (J5)
Antenna connector