User's Manual

Table Of Contents

MReX Transceiver User Manual v1.92 Firmware

Operation

When the MReX is operating normally, the status green LED flashes briefly once every second.

When Decoding messages, the green LED is held on for approximately one second. When trans-

mitting the green LED flashes approximately 3 times a second and if fitted, the red LED will illu-

minate for the duration of the transmission.

Under normal operation, on start-up there is a sign-on message sent out the serial port. The sign on

message indicates the firmware revision, serial number other software related information.

After start-up the MReX enters its receive and decode mode of operation, waits for commands to be

entered serially for processing or inputs to be triggered. These may be either protocol messages to

be transmitted or commands related to the configuration of the device.

Note: If the MReX is being used in SERIAL_LINK mode the MReX will only accept con-

figuration commands on its first 10 seconds after power up to prevent accidental misconfig-

uration. After this time configuration commands will be ignored. Please refer to Serial Point

to Point Operation in this manual for further information.

When messages are received and decoded, they are immediately sent out the serial port in the

format of the configured protocol in use.

Messages are transmitted as per the input configuration when inputs change state. Please refer to In-

put Output Hardware Connection or Input Handling sections on this manual for further inform-

ation.

The output is driven high or low, or for a particular period of time depending on configuration. The

outputs are controlled via the WTE Output Control Protocol message received and decoded.