SMC Networks EX500 - Manual (Page 24)

EX500 Serial System EX## - OME0008
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5 -3. LED display
When the Input Unit Manifold is not connected, the respective COM LED of the GW Unit will not light up.
To monitor the status of COM port, it is necessary to use a Terminal Plug.
The COM LED will light up when a Terminal Plug is used. ( Refer to section 3 -6 -4 )
5 -4. Operation setting
Turn the power supply OFF when setting switches.
Open the station switch protection cover and set the rotary switch with a flat blade screw driver.
COM A COM B COM C COM D
SOL
NS
MS
BUS
GATEWAY UNIT
EX500 SERIES
Display Content
MS
Operating in a normal condition : Green lights
Recoverable fault ( Memory is abnormal ) : Red lights
NS
Not online : Lights off
Online , Not Allocated : Green flashing
Online , Allocated : Green lights
Connection Time - Out : Red flashing
Critical Link Failure : Red lights
SOL
Solenoid valve source voltage is normal : Lights
Voltage lowered to 20V or less : Lights off
COM A
Communication port A is receiving data : Lights
Communication port A has no data : Lights off
COM B
Communication port B is receiving data : Lights
Communication port B has no data : Lights off
COM C
Communication port C is receiving data : Lights
Communication port C has no data : Lights off
COM D
Communication port D is receiving data : Lights
Communication port D has no data : Lights off
0
1
2
3
4
5
9
8
7
6
Figure of setting switch
SW1 SW3 SW2
！ ！ ！ ！ CAUTION