SY-SIX-RDM2-DIN-485 | Synergis IX DIN Rail 2 Door Expander | Installation Manual
Last Updated September 2018
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LED Indicators
The Reader Expander includes comprehensive diagnostic indicators that can aid the installer in diagnosing
faults and conditions. In some cases an indicator may have multiple meanings depending on the status
indicator display at the time.
Status Indicator
The status indicator displays the module status.
State
Description
Fast Flash (green)
Module attempting registration with controller
Slow Flash (green)
Module successfully registered with controller
Flashing (red)
Module communications activity
When the fault and status indicators are flashing alternately, the module is in the identification mode, enabling
the installer to easily identify the module in question. Upon either a module update or the identification time
period set expiring, the module will return to normal operation.
Fault Indicator
The fault indicator is lit any time the module is operating in non-standard mode. If the fault indicator is flashing,
the module requires a firmware update or is in firmware update mode. When the fault indicator is on, the
Status indicator will flash an error code.
State
Description
Continuous slow flash (red)
Module is in boot mode awaiting firmware update
Constantly on (red)
Module is in error state and will flash an error code with the status indicator
Power Indicator
The power indicator is lit whenever the correct module input voltage is applied across the N+ and N-
terminals.
State
Description
Constantly on (green)
Correct module input voltage applied
Constantly off
Incorrect module input voltage applied
