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WM-1
Wireless modbus-to-modbus bridge
Features
• replacement for RS485 wiring
• modbus RTU serial protocol
• wired/wireless combinations
• very long range, no hopping
• protected private connection
• multiple slaves per device
• multiple addressable groups
230V
power
supply
Examples
RS485
Modbus
master
whip antenna
WM-1
Modbus wireless bridge
230V 1W 868MHz RS485 IP20 50°C
configuration
push button
jumpers
(below the cover)
Modbus master, connected to 12 slaves
using a pair of WM-1 devices.
Modbus master, connected to 10 slaves,
organized in two groups.
Modbus master, connected to 5 slaves,
each one has has a local WM-1 device.
RS485
868
MHz
300m
Tx
Rx
C
RS485
B
A
RF
power supply
Modbus
slave
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Table of Contents
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Summary of Contents for Cybrotech WM-1
- Page 1 (below the cover) Examples Modbus master, connected to 12 slaves using a pair of WM-1 devices. Modbus master, connected to 10 slaves, organized in two groups. Modbus master, connected to 5 slaves, each one has has a local WM-1 device.
- Page 2 Radio configuration Create a new secure group • turn on all devices at the same time • within 10 seconds, while RF led is blinking, press and hold button on one of the devices button After a second, the new address is randomly power on generated and sent to all devices.
- Page 3 Secure group By default, all devices are in the same group, they listen to each other. To separate your devices, for each modbus master create a new secure group. Once the group is created, no other device can listen or interfere with your data. Groups share the same bandwidth.
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