Mitsubishi Electric MELDAS C6 Programming Manual page 381

(1) Control signals (Rn), (Dn)
F E D C B A 9
Error during chopping
(not used)
No option
Size over
No. of axes illegal
Large section No. error
Write protect
Error occurrence
(2) Large section number (Rn+1), (Dn+1)
Specify the large section number of the data to be read/written in binary form.
(3) Sub-section number (Rn+2, Rn+3), (Dn+2, Dn+3)
Specify the sub-section number of the data to be read/written in binary form.
(4) Data size (Rn+4), (Dn+4)
Specify the size of the data to be read/written in binary form.
1: One byte
2: Two bytes
4: Four bytes
If any value other than 1, 2, or 4 is specified, the invalid data size alarm will occur.
(5) Read/write specifications axis (Rn+5), (Dn+5)
Specify the axis to read or write data for each axis classified by major classification numbers.
F E D C
System designation
0: First part system
1: Second part system
:
6: Seventh part system
If axis specification is not made or exceeds the maximum control axis when axis data is read or
written, the invalid axis number alarm will occur.
10. Exclusive Commands 2
10.4 DDB (Direct Data Bus)
8 7 6 5 4 3 2
Warning output
Set by CNC
w hen DDB command
is completed
(LOW) (HIGH) (LOW) (HIGH)
B A 9 8 7 6 5
:
- 372 -
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1 0
0: Read des ignation
1: Write designation
0: Direct input
1: Addition input
0: Decimal point invalid
1: Decimal point value
Last 4 digits of data during
variable read/w rite correspond
to decimal point digits.
Warning output
BIT4 = 1: Variable data empty
0: Variable data not empty
BIT5 = 1: Variable overflow
0: Not Var iable overflow
4 3 2 1 0
First axis
Second axis
Third axis
Forth axis
Fifth axis
Sixth axis
Set by PLC during
execution of
DDB command