Pro-face Pro-face ST Series, User Manual

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ST Series User’s Manual
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7.3 Troubleshooting
This section describes how to find and resolve problems that may occur on the ST. If there is a problem with
the PLC, please refer to the corresponding PLC manual.
7.3.1 Possible Types of Trouble
The following items are problems that may occur while using this unit.
(1) No Display
The screen will not display even when the unit is powered ON. Also, during RUN mode, the screen dis-
play disappears.
(2) No ST/Host Communication
The ST unit cannot read data from the host. An error message may appear on the screen as a result.
(3) Touch Panel Does Not Respond
The touch panel does not react when pressed, or the reaction time is very slow.
(4) Buzzer Sounds when ST power is turned ON
The ST goes to the OFFLINE mode unexpectedly while operating, or the ST automatically goes to the
OFFLINE mode when the power is turned ON.
(5) Clock Settings Cannot be Entered
Even after clock settings are entered, the ST unit's clock settings remain eg.00/01/01.
(6) OFFLINE displays During RUN Mode
The ST’s buzzer will sound intermittently after power is first turned ON.
For these first five problems, see the troubleshooting tables on the following pages.
For the last problem (6), a SYSTEM ERROR may have developed while displaying the OFFLINE mode
screen.
Be sure that no object has touched the screen accidentally if the ST goes to the OFFLINE mode without dis-
playing an error message when the power turned ON. If any object may have possibly touched the top left cor-
ner of the screen within 10 seconds after the power turned ON, that may cause the ST to go OFFLINE.
SEE
7.4 Error Messages (Page 7-15)
SEE
7.5 Error Message Details (Page 7-17)