TReX User Manual v2.14 Firmware
IO Mirror Operation
The IO MIRROR is the simplest self managed telemetry mode that mirrors the inputs of one
TReX unit to the outputs of another TReX unit.
SCADA monitoring and control is not possible in this mode of operation (see
SCADA
Configuration and Operation
). This mode is intended for a simple system that allows remote
outputs to be controlled and inputs monitored without any supervising equipment.
When TELEMETRY->MODE is set to IO MIRROR the small “T” icon is displayed in the title
bar.
The IO MIRROR mode can map a single TReX unit to another TReX unit or to many
selectively configured TReX units.
When enabled, the REMOTE ID device outputs are mirrored to the state of LOCAL ID device
inputs. In order for a REMOTE ID device to have its outputs changed through the MIRROR
MODE, the output must be configured to be TELEMETRY. It is possible to restrict outputs(s)
that are updated by DISABLING outputs on the REMOTE ID device.
REMOTE ID devices are automatically controlled using the
WTE output control protocol
.
When there is any input change, or an analog input changes by more than a configured
threshold amount, there is an immediate transmission that updates a REMOTE ID device
outputs.
A periodic refresh time can also be configured to ensure that outputs and inputs remain
synchronised. On a REMOTE ID device inputs may optionally be tied to outputs to allow the
actual remote output state to be displayed on the originating ID unit.
Mirrored INPUTS use the same TX DEBOUNCE and TX COUNT configuration items as
normal message inputs. To prevent inputs from being mirrored, set the TX COUNT to 0. In
some cases multiple transmissions may be desired. The default configuration is to transmit an
input after being debounced for 200mS.
© WTE Limited, 2018 – Christchurch New Zealand
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