A, B: Connect RS485
(Modbus)
RS485
termination
switch
Up = terminated
Down = un-terminated
Power and
Modbus
connector
Modbus
Master 115S 115S 115S
AAB A
BAB
RS485
RS485
Termination
switch up
(terminated)
Set a unique Modbus slave address for each 115S
connected to the Modbus Master
Example shows address “01”
Consult user manual for Modbus addresses
ADDRESSING
x10 x1
115S
B A
-+
POWER
Modbus
Master
Power
Supply Power Connections:
EARTH wiring minimum 2mm² - 14 AWG
B A -+
ON
115S Quick Setup Guide - Connections
inst_115S_1.13.vsd © ELPRO Technologies.
Address switches must be 00 for E-Series protocol
Example shows address “00”
Setup using ELPRO E-Series configuration utility.
ADDRESSING
x10 x1
Connection to Modbus Master Connection to E-Series Radio
Power
Power Power
Modbus Modbus Modbus
+-
A, B: Connect RS485
(Elpro)
RS485
Termination
switch
Up = terminated
Down = un-terminated
Power and
RS485
connector
E-Series
Module 115S 115S 115S
AB AB AB AB
RS485
RS485
Termination
switch up
(terminated)
B A
-+
POWER
E-Series
Radio
Power
Supply Power Connections:
115S-11: 300mA max
115S-12: 900mA max
115S-13: 900mA max
+-
B A -+
RS485
Termination
switch up
(terminated)
ON
**Check rear label for
operating voltages
Power Power Power
RS485 RS485 RS485
Battery
_
+
Supply
Earth
115S 115S
B
RS485 Termination
switch up (terminated)
or
120ΩFitted across
RS485
115S 115S 115S
Earth
EarthEarth Earth
Earth
Earth
Earth Earth
Earth
‘+’ : Pos Supply
(10.8 to 30 VDC**)
‘-’ : Neg Supply
Ensure all earth connections are at the same potential.
EARTH wiring minimum 2mm² - 14 AWG
Ensure all earth connections are at the same potential.
THIS EQUIPMENT IS SUITABLE FOR USE IN CLASS 1 DIVISION 2 GROUPS A,B,C AND D, OR NONHAZARDOUS LOCATIONS ONLY.
WARNING ‐EXPLOSION HAZARD ‐DO NOT DISCONNECT EQUIPMENT WHILE THE CIRCUIT IS LIVE OR UNLESS THE AREA IS KNOW TO BE FREE OF IGNITABLE CONCENTRATIONS.
WARNING ‐EXPLOSION HAZARD ‐SUBSTITUTION OF ANY COMPONENT MAY IMPAIR SUITABILITY FOR CLASS I, DIVISION 2.
115S-11: 300mA max
115S-12: 900mA max
115S-13: 900mA max
**Check rear label for
operating voltages
‘+’ : Pos Supply
(10.8 to 30 VDC**)
‘-’ : Neg Supply
