MITSUBISHI ELECTRIC Mitsubishi Programmable Logic Controller QD75D - Manual (Page 178)

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MELSEC-Q
5 DATA USED FOR POSITIONING CONTROL
Storage item Storage details Reading the monitor value
Md.7
Error
judgment
[Storage details] This area stores the following results of the error judgment performed
upon starting:
•
BUSY start warning flag
•
Error flag
•
Error No.
[Reading the monitor value] Monitoring is carried out with a hexadecimal display.
b15 b12 b8 b4 b0
A B C D
B a C D
Buffer memory
Monitor value
D C B A
Error flag OFF
Stored contents Storage value
0
1 Error flag ON
Error flag Error No.
Convert the hexadecimal value "a, B, C, D" into a decimal value and
match it with "15.2 List of errors".
BUSY start
warning OFF
Stored contents Storage value
0
1
BUSY start
warning ON
BUSY start warning flag
Starting history
(U
p to 16 records can b
e
stored)
Md.8
Start history
pointer
Indicates a pointer No. that
is next to the Pointer No.
assigned to the latest of the
existing starting history
records. Monitoring is carried out with a decimal display.
Monitor value
Storage value (Pointer number)
0 to 15