WTE TReX-460, User Manual

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TReX User Manual v15.30 Firmware
Programmable Logic Controller
An optional feature of the TReX-460 is a telemetry-optimised PLC. This allows automated
control of outputs and transmissions based on configurable inputs, serial input, received
messages, counters, comparators and timers. This PLC utility uses a ladder logic programming
similar to other commercially available PLC devices.
Key Advantages of the TReX PLC:
•
Can be configured on the unit itself, through the menu, without the need for an external
PC or programmer.
• Ladder logic program may downloaded, and configured externally in a familiar ladder
logic format using any text editor.
•
Can be used with remote TReX units, separated wirelessly over significant distance,
and use the input and output state of remote units to control the PLC program flow on
the local unit.
•
Each remotely accessed TReX can operate it’s own PLC program.
•
Live PLC operation can be viewed on the screen showing up to 6 rungs operating at the
same time.
•
Supports weekly, daily or hourly alarms.
•
Allows macros to be executed as a rung output. This enables any user configurable
message to be processed such as transmission of message or execution of TReX
configuration commands.
•
Allows timestamped logging to internal SD card of any PLC physical output change.
•
Can match on configurable serial input, and use this to control program flow and serial
output. If desired, simple serial protocols can be supported or converted.
See PLC Screens , PLC Commands and PLC Support sections for usage and configuration
details.
© WTE Limited, 2022 – Christchurch New Zealand
Page 30 of 302