WTE TReX-460, User Manual

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TReX User Manual v15.30 Firmware
Wireless Motion Activated Light
In this example, a motion sensor being used to activate a timed light. The light needs to stay
on while the motion sensor is being triggered, and turn off after 30 seconds inactivity time.
In this configuration:
Q:8 : is being latched on, by a message received from the wireless sensor. The TReX receives a
standard WT Output Protocol message from the sensor instructing it to close Digital Output
8 . By configuring the wireless motion sensor to transmit this message ( [[01]8-] ), the PLC
program can be started without the need for a physical connection.
Q:1 is the output controlling the light.
T:1 is the timer, that is reset each time a message is received from the wireless sensor.
PLC Configuration:
//With every new incoming message, reset the “light on” timer
*PLC_RUNG=01:[Q:8]-------[-]---------[-]---------(RT1)
//Immediately turn on the light
*PLC_RUNG=02: +-(SQ1)
//Clear the output set each time a message is received.
*PLC_RUNG=03: +-(RQ8)
//Keep the timer running as long as the light is turned on.
*PLC_RUNG=04:[Q:1]-------[-]---------[-]---------(T:1)
//As soon as the timer expires through inactivity, turn off the light
*PLC_RUNG=05:[TD1]-------[-]---------[-]---------(RQ1)
*PLC_RUNG=06:
© WTE Limited, 2022 – Christchurch New Zealand
Page 184 of 302