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Appendix F
Troubleshooting
143
Abnormalities
Item
Cause
Correction
All indicators do not light.
Power to PC is OFF.
Turn ON power to PC.
ASCII Unit is not mounted on PC
securely.
Tighten mounting screws.
One of Special I/O Units on PC is
defective. PC does not start in this
case.
Exchange defective Special I/O Unit
with new one. Defective unit is
identified by $ when I/O table is read.
Unit numbers are assigned to Special
I/O Unit in duplicate. PC does not start
in this case.
Correct unit number assignment. Unit
numbers are displayed when I/O table
is read.
Refreshing between PC and ASCII
Unit is not performed correctly. Only
ASCII Unit stops in this case.
Find and remove cause and restart
ASCII Unit by turning ON and then
OFF auxiliary memory relay (AR 0100
to 0109) corresponding to ASCII Unit.
If ASCII Unit still does not start,
replace Unit with new one.
ERR indicator comes on.
Power to peripheral device is OFF.
Turn ON power to device.
Cable for device is disconnected.
Correctly connect cable, and tighten
screws.
Breakage in cable or faulty contact
exists.
Repair or replace cable.
Transfer rates and communication
conditions of ASCII Unit and
peripheral device do not match.
Correct transfer rates and
communication conditions.
ERR 1 indicator comes on.
Battery connector is disconnected.
Correctly connect battery connector.
Battery voltage has dropped.
Replace battery.
Initial screen is <<PROGRAM
MEMORY ERROR>>, and CTRL+X is
ineffective.
BASIC program is damaged.
Press CTRL+I, and BASIC program
will be erased. (If program is backed
up in EEPROM, program can later be
restored by LOAD command.)
Inspection Items
The following items should be periodically inspected.
Item
particulars
Criteria
Environment
Is ambient temperature appropriate?
0
±
to 55
°
C
Is ambient humidity appropriate?
35% to 85% (without condensation)
Is dust built up?
Must be free from dust.
Mounting condition
Are cable screws loose?
Must not be loose.
Is cable broken?
Must be mounted properly.
Maintenance Parts
The battery life is 5 years at 25
o
C. The battery life is shortened at higher temperatures. When the battery volt-
age drops, the ERR 1 LED indicator blinks, and battery error flag (word n+3 bit 06, where n = 100 + 10 x ma-
chine number) turns ON. Replace the battery within 1 week after the indicator blinks.
Summary of Contents for SYSMAC C200H-ASC02
Page 1: ...Cat No W165 E1 04 ASCII Unit SYSMAC C200H ASC02 ...
Page 2: ...C200H ASC02 ASCII Unit Operation Manual Revised September 2002 ...
Page 3: ...iv ...
Page 5: ...vi ...
Page 7: ...TABLE OF CONTENTS viii Glossary 159 Index 163 Revision History 165 ...
Page 122: ...Appendix B Specifications 115 130 35 100 5 ...
Page 168: ...Cat No W165 E1 04 C200H ASC02 ASCII Unit OPERATION MANUAL ...