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12-32-0000 32 PORT INPUT EXPANSION MODULE
Product Manual
Sea Air and land Communications Ltd, 10 Vanadium Place, Addington, Christchurch 8024, New Zealand
April 2017
Indicators
There are 6 indicators on the top panel consisting of:
Purpose
Label
Description
System Error
ERROR
The RED error LED will indicate when there is a system error. A
flashing RED LED indicates the unit cannot communicate with
the transmitter or an adjacent input module, or if the
message buffer is full
Upstream
Receive Data
RX DATA
This GREEN LED flashes to indicate serial data is being
received from an upstream device
Upstream
Transmit Data
TX DATA
This RED LED flashes to indicate serial data is being
transmitted to an upstream device
Power
Indicator
SYSTEM
The GREEN power LED, which normally flashes ON once per
second to indicate healthy micro-controller operation. After
a de-bounce period, the green LED will flash rapidly if the low
supply detector is activated
Downstream
Receive Data
RX DATA
This GREEN LED flashes to indicate serial data is being
received from a downstream device
Downstream
Transmit Data
TX DATA
This RED LED flashes to indicate serial data is being
transmitted to a downstream device