User`s manual

Chapter 6 - GP RUN and Errors
GP-477R/577R Series User's Manual 6-3
Refer to the following checklists when trouble with the GP occurs. Follow the steps
given in order to locate the cause of the problem. If you still cannot fix the problem,
or the characters ((H)) (hardware problem), or ((S)) (software problem) are used,
please contact your local authorized Proface dealer for service and advice.
2. Troubleshooting Checklists
No. Check Item OK Corrective Measure(s)
1
Unplug the GP’s Power Cord.
2
Is the GP’s Power Cord correctly
connected to the GP?
Connect the power terminals
correctly.
3
Is the voltage being supplied
within the specified voltage range?
2.1 General
Specifications
4
Reconnect the GP’s Power Cord.
5
Does the GP’s power lamp light? Does not light. ((H))
6
(Only with GP577R) Are both the
backlights lit?
(1) In the PLC’s System Data Area, if
the backlight’s OFF bits are turned
ON, the backlight will not light. Turn
the appropriate bits OFF.
PLC Connection Manual
(2) If one or both of the backlight(s)
are burned out, change both
backlights.
7.3
Changing the Backlights
(3) If neither (1) nor (2) succeed in
fixing the problem, please contact
your local GP distributor. ((H))
7
In the PLC’s System Data Area, is
data written to the backlight’s
display OFF area?
Delete the OFF data.
PLC Connection Manual
8
Has all the data from the Screen
Editor software been transferred
correctly?
Operation Manual
9
Unplug the GP’s Power Cord and disconnect all other cables attached to the
GP.
10
When the Power Cord is
reconnected, does touching the
upper left corner of the GP change
the unit to OFFLINE mode?
Ch. 4 - OFFLINE Mode
11
Check that the [INITIAL SCREEN
NUMBER]’s setting is correct.
Path:[MAIN MENU] to [SYSTEM
ENVIRONMENT SETUP] to [SET
UP SCREEN] menu.
5.8 SET UP SCREEN
12
Use the [INTERNAL EPROM
(SCREEN AREA)] feature to check
the GP’s screen.
Path: [MAIN MENU] to [SELF-
DIAGNOSIS] menu.
This action will destroy
all the GP’s current data
SELF-DIAGNOSIS
If this fails to correct the problem,
((H))
13
Use the [INITIALIZE MEMORY] feature to
clear the contents of memory.
Path: [MAIN MENU] to [INITIALIZE]
menu.
5.6 INITIALIZE
MEMORY
Reference
Reference
Reference
Reference
Reference
Reference
Reference
Reference
(A) "No Display" Checklist
Reference
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Important