inst_115S_1.5.doc
Connection to a Modbus master
ADDRESSING
Set a unique Modbus slave address for each 115S
connected to the Modbus master.
Example here address = 01.
x10
x1
POWER
Modbus
115S
master
115S
Master
power
power
supply
supply
12VDC
modbus
power
power
earth
RS485
Up = terminate
Down = unterminated
ON
RS485
termination
switch.
Modbus
115S
master
A
A
B
120Ω
Consult user manual for Modbus addresses.
115S-Series Quick setup guide
B A - +
115S
115S
Connect power:
(10.8-15.6 VDC) to '+'
and EARTH to '-'.
115S-11: 300mA max
modbus
115S-12: 600mA max
modbus
115S-13: 650mA max
power
power
ø
2mm EARTH wire
B A - +
A, B: Connect RS485
(Modbus)
Power and
Modbus
connector
115S
115S
Termination
switch up
(terminated)
B
A
B
A
B
Connection to E-Series Radio
ADDRESSING
Address switches must be 00 for E-Series protocol.
x10
x1
POWER
E-series
115S
radio
Master
sup
Battery
power
12VDC
supply
bat
modbus
power
power
earth
RS485
Up = terminate
Down = unterminated
ON
RS485
termination
switch.
E-Series
radio
115S
(RS485-
terminated)
A
A
B
Set up using ELPRO E-Series configuration utility.
© ELPRO Technologies. June 2007. V1.5
B A - +
115S
115S
Connect power:
(10.8-15.6 VDC) to '+'
and EARTH to '-'.
115S-11: 300mA max
modbus
115S-12: 600mA max
modbus
115S-13: 650mA max
power
power
ø
2mm EARTH wire
B A - +
A, B: Connect RS485
(Modbus)
Power and
Modbus
connector
115S
115S
Termination
switch up
(terminated)
B
A
B
A
B
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