Omron CV500 Installation Manual page 102

Troubleshooting Flowcharts
(From preceding page)
B
CPU Bus Unit
error?
NO
SYSMAC
BUS/2 error?
NO
SYSMAC BUS
error?
NO
Battery error?
NO
CPU Bus Unit
setting error?
NO
Momentary
power interrup-
tion error?
NO
ALARM indicator does not
go OFF even after all er-
rors have been checked
and corrected
Replace Unit
I/O Check Flowchart
(A40207 ON)
YES
Parity error occurs. Check
erroneous Unit with word
A422
(A40206 ON)
YES
Check Maser and Slave
addresses with words
A424/A480 to A487
(A40205 ON)
YES
Check Master and Slave
addresses with words
A425/A470 to A477
(A40204 ON)
YES
A42615 ON: CPU battery
error; A42614 ON:
Memory card battery error
(A40203 ON)
YES
Unit No. is different from
registered No. Check erro-
neous Unit with word A427
(A40202 ON)
YES
Check supply voltage and
power supply wiring
It is assumed that the ladder diagram shown below is programmed and that
SOL1 malfunctions.
Given such a malfunction, the flowchart on the following page may be used to
help locate the problem.
Check noise source and
environment. Turn off erro-
neous bit of word A001
and restart
Check cable and power
supply of Slave
Check cable and Power
Supply Unit of Slave Rack
Replace battery. Check
connection of battery
Change setting of Unit
No., or create I/O table
(LS1) (LS2)
000002 000003
000500
SOL1
000500
Section 5-2
A
(To preceding page)
89