SMC Networks EX245-SPN1 Operation Manual page 35

6.4.3. FO indicator
FO 1/2
OFF
Flash
ON
6.4.4. SF and BF indicators
SF BF
OFF OFF
--- Flash
OFF ON
Flash
OFF
at 2 Hz
Flash
---
at 0.5 Hz
ON ---
Table. 6-3 FO indicator
The strength of the fiber-optic communication is more than 2 dB on Port 1/2 (XF1/2).
The strength of the fiber-optic communication is more than 0 dB but less than 2 dB on
Port 1/2 (XF1/2).
The strength of the fiber-optic communication is 0 dB on Port 1/2 (XF1/2).
Table. 6-4 SF and BF indicators
No fault (The SI Unit is currently exchanging data with the IO Controller without errors.)
Faulty or no connect message frame (although the SI Unit is physically connected to the
bus).
・ Configuration is defective, or before initial commissioning has been done.
・ Device name is different from configuration setting.
・ The GSD file is not correct.
・ The communication between IO Controller to SI Unit is defective.
The SI Unit is not connecting to any bus.
The connection to the IO Controller is OK but the following diagnostic event occurred.
・ At least one valve coil has a short circuit.
The following diagnostic event occurred.
・ At least one connected module has a short circuit or the module layout has changed.
The following diagnostic event occurred.
・ The configuration data sent by the IO Controller does not match the actual layout.
・ Power supply is not present or is below the dropout level.
・ At least one valve coil has a short circuit and at least one connected module has a short
circuit or the module layout has changed.
The SI Unit has an internal error.
・ An incompatible module is connected to the SI Unit.
Strength of the Fiber-Optic.
・Communication is less than 2 dB
Meaning
Meaning
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No.EX##-OMU0020-A