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MELSEC-Q
3 SPECIFICATIONS
3.4.12 Hardware test area
This area is used for hardware test and communication test.
For the hardware test, refer to Section 5.4.
For the communication test, refer to Section 5.6.
(1) Hardware Test Item Area (address: 062E
H
/1582)
The test item No. of the hardware or communication test being executed is
stored.
Table 3.29 Hardware test items
Test item No.
Meaning
Description
0000
H
Before test
Hardware test not yet started.
0001
H
ROM check
Testing if ROM is normal.
0002
H
RAM check
Testing if RAM is normal.
0003
H
Microcomputer check
Testing if microcomputer is normal.
0004
H
CAN controller check
Testing if CAN controller is normal.
FFFF
H
Test completion
Hardware test was executed and completed normally.
Table 3.30 Communication test items
Test item No.
Meaning
Description
0000
H
Before test
Communication test not yet started.
0001
H
Node No. duplication
check
Checking if any other node has the same node No. as the
own node.
0002
H
Communication
check
Checking if communication with one or more nodes on the
network is available.
FFFF
H
Test
completion
Communication test was executed and completed
normally.
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