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5 DATA USED FOR POSITIONING CONTROL
Storage item
The No. of the axis for which an
Md.13
error was detected when starting
Start axis
is stored.
[Stored contents]
[Reading the monitor value]
Md.14
Operation type
Md.15
The error detection time is stored.
(Software clock data created by
Start time
system in D75P2.)
(Hour: minute)
Md.16
The error detection time is stored.
(Software clock data created by
Start time
system in D75P2.)
(Second:100 ms)
[Stored contents]
[Reading the monitor value]
Md.17
Error judgment
The pointer No. following the
Md.18
pointer No. where the latest start
Starting history
history during errors is stored is
pointer at error
indicated.
Storage details
The operation information (restart flag, start origin, operation type) is stored.
Restart flag
Start origin
Operation type : What type of operation was carried out
Monitoring is carried out with a hexadecimal.
A
B
C
b15
b12
b8
b4
Buffer
memory
a
B
C
Start origin
Stored contents Storage value
PLC CPU
00
External signal
01
Peripheral device
10
Restart flag
Stored contents Storage value
Restart flag OFF
0
Restart flag ON
1
Buffer memory (stored with BCD code)
b15
0
0 to 2 0 to 9 0 to 5
Buffer memory (stored with BCD code)
b15
0
0 to 5 0 to 9
The error judgment results when starting (shown below) are stored.
BUSY start warning flag
Monitoring is carried out with a hexadecimal.
A
B
Buffer
b15
b12
b8
memory
a
B
Error flag
Stored contents Storage value
Error flag OFF
Error flag ON
BUSY start warning
Stored contents Storage value
BUSY start
warning OFF
BUSY start
warning ON
5 - 84
Reading the monitor value
Monitoring is carried out with a decimal.
Monitor
value
: Whether the operation restarted after stopping once
: Where the start signal was input from
D
b0
A
D
Operation type
Stored contents
Positioning operation
Block positioning operation
JOG operation
Manual pulse generator operation
Machine zero point return
High-speed zero point return
Current value change
Data setting method zero point return
Absolute position restoration
Monitoring is carried out with a hexadecimal.
1
5
3
0
b12
b8
b4
b0
0 0 1 0 1 0 1 0 0 1 1 0 0 0 0
0 to 9
Monitoring is carried out with a hexadecimal.
4
9
0
7
b12
b8
b4
b0
1 0 0 1 0 0 1 0 0 0 0 0 1 1 1
0 to 9
0
Error flag
C
D
b4
b0
C
D
Error No.
a, B, C and D are converted into a decimal,
which can be confirmed in section "14.3 List of errors".
0
1
0
1
Monitoring is carried out with a decimal.
Monitor
value
MELSEC-A
Storage value
1: Axis 1
2: Axis 2
Monitor value
B
C
D
Storage value
Remarks
(decimal)
a
B
C
D
001
0
0
0
1
~
2
8
600
0
5
1
B
5
8
7000
~
1
2
7010
B
6
1
F
C
8060
7
1
F
7
D
8061
1
F
7
3
8051
1
F
7
4
8052
1
F
7
5
8053
1
F
F
E
8190
1
F
F
F
8191
Monitor value
5
1
3
00 to 23
00 to 59
(hour)
(minute)
Monitor value
4
9
0
00 to 59
00 to 09
(second)
(100 ms)
Error No.
Monitor value
A
B
C
D
Storage value (Pointer No.)
0 to 15
0
7
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