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EX※※-OMR1012
LED Display
The status display LED displays the power supply and communication status.
Various kinds of status can be checked as follows:
Display Content
ST(M) Displays the diagnosis status of the unit.
PWR
Displays the status of the power supply voltage for control
and input.
PWR(V) Displays the status of the power supply voltage for output.
MS Displays the module status.
NS Displays the network status.
Display Content
L/A 1 Displays the communication status of the BUS IN side.
L/A 2 Displays the communication status of the BUS OUT side.
•SI unit common status
LED display Content
OFF
The power supply for control and input is Off.
Green LEDs are ON
The unit is in normal operation.
Red ST(M) LED is ON
The element in SI unit is broken.
Red PWR LED is ON
The power supply voltage for control and input is abnormal.
Red PWR(V) LED is ON
The power supply voltage for output is abnormal.
Green ST(M) LED is flashing
A unit other than the SI unit has been diagnosed and detected.
Red ST(M) LED is flashing
Either of the following conditions:
•Valve ON/OFF counter has exceeded the set value.
•Valve is short circuited or disconnected.
Red/green ST(M) LED is flashing
alternately
Connection error between units has occurred.
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