-35-
No.EX##-OMU0020-A
6.4.3. FO indicator
Table. 6-3 FO indicator
FO 1/2
Meaning
OFF
The strength of the fiber-optic communication is more than 2 dB on Port 1/2 (XF1/2).
Flash
The strength of the fiber-optic communication is more than 0 dB but less than 2 dB on
Port 1/2 (XF1/2).
ON
The strength of the fiber-optic communication is 0 dB on Port 1/2 (XF1/2).
6.4.4. SF and BF indicators
Table. 6-4 SF and BF indicators
SF
BF
Meaning
OFF
OFF
No fault (The SI Unit is currently exchanging data with the IO Controller without errors.)
---
Flash
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.
OFF
ON
The SI Unit is not connecting to any bus.
Flash
at 2 Hz
OFF
The connection to the IO Controller is OK but the following diagnostic event occurred.
・
At least one valve coil has a short circuit.
Flash
at 0.5 Hz
---
The following diagnostic event occurred.
・
At least one connected module has a short circuit or the module layout has changed.
ON
---
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