SMC Networks EX245-SPN1A Operation Manual page 38

6.4.1. SF and BF indicators
SF BF
OFF OFF
ON ---
--- ON
Alternately flash
at 1 Hz
SF ON SF OFF
⇔
BF OFF BF ON
Simultaneously flash
at 1 Hz
SF ON SF OFF
⇔
BF ON BF OFF
6.4.2. US1 indicator
US1
OFF US1 is not present.
Flash at 1 Hz US1 is present but is below the permissible level (< approx. 19.2 V DC).
ON US1 is present.
6.4.3. US2 indicator
US2
OFF US2 is not present.
ON US2 is present.
Table. 6-3 SF and BF indicators
No fault (The SI Unit is currently exchanging data with the IO Controller without
errors).
One of the following may have occurred.
・ US1 is below the permissible level (< approx. 19.2 V DC).
・ The valve coil has a short circuit or the connected module has a short circuit.
・ The connected module has disconnected.
One of the following may have occurred.
・ The connection to the IO Controller is nothing, or disconnection to the IO
Controller.
・ Device name is not correct.
・ IP address is not set or not correct.
・ The GSD file is not correct.
・ The configuration data sent by the IO Controller does not match the actual
layout.
One of the following may have occurred.
・ During firmware update.
・ During forced output mode by Web server function.
Firmware update failed.
Table. 6-4 US1 indicator
Table. 6-5 US2 indicator
Meaning
Meaning
Meaning
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No.EX※※-OMW0011-A