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5
PREPARATORY PROCEDURES BEFORE
OPERATION
5.5 Self-diagnostic Test
5.5.1 Self-loopback test
5 - 14
1
OVERVIEW
2
SYSTEM
CONFIGURATION
3
SPECIFICATIONS
4
FUNCTIONS
5
PREPARATORY
PROCEDURES BEFORE
OPERATION
6
LINK DATA SEND/
RECEIVE PROCESSING
AND PROCESSING TIME
7
PROGRAMMING
8
TROUBLESHOOTING
(3) Execution of test
(4) Judge of test result
The LED displays the test result.
(a) When normal
ERROR LED is turned ON and OFF repeatedly in a cycle of
"CRC OVER AB.IF TIME DATA UNDER CRC ".
(b) When failed
The LED which corresponds to the error is turned ON, and the test is canceled.
Figure 5.15 Execution of test
Figure 5.16 When normal
Figure 5.17 When failed
Start
End
Judge the test result.
Turning ON from OFF the power supply or resetting
the CPU module leads to start the test.
A
1SJ71AP23Q
E
R
R
O
R
RUN
SD
RD
F.LOOP
CPU
CRC
OVER
AB.IF
TIME
DATA
UNDER
F.LOOP
R.LOOP
A
1SJ71AP23Q
RUN
SD
RD
F.LOOP
CPU
CRC
OVER
AB.IF
TIME
DATA
UNDER
F.LOOP
R.LOOP
E
R
R
O
R