Mitsubishi Electric MELDAS C6 Interface Manual page 299

B con-
Signal name
tact
—
AXIS INDEX
[Function]
PLC I/F of each axis is allocated from the 1st axis of 1st part system in order, but if the axis
structure of each part system is changed, PLC I/F corresponding to that will be changed. In that
case, the PLC I/F's allocation of each axis is set randomly to make the PLC program in common
with the I/F.
[Operation]
In the following example, when the 1st part system is a two or three-axes structure and the 2nd part
system is a one-axis structure, it is impossible to make the PLC program in common because the
axis I/F of 2nd part system is changed by the axis structure of 1st part system. Then, by changing
the allocation with the axis index, the allocation of 2nd part system is fixed and the PLC program
can be made in common.
1st part system 2 axes • 2nd system part 1 axis
X440
$1 1st axis
X460
$1 2nd axis
X480
$2 1st axis
1st part system 3 axes • 2nd part system 1axis
X440
$1 1st axis
X460
$1 2nd axis
X480
$1 3rd axis
X4A0
$2 1st axis
6. EXPLANATION OF INTERFACE SIGNALS
6.4 PLC Output Signals (Data Type: R***)
Signal
abbreviation
Y440
R140
$1 1st axis
R141
R142
Y470
$1 2nd axis
Y4A0
$2 1st axis
R140
Y440
$1 1st axis R141
R142
R143
Y470
$1 2nd axis
Y4A0
$1 3rd axis
Y4D0
$2 1st axis
1st axis
R140
Axis index
0
0
Axis I/F after the allocation is
0
changed with the axis index.
$1 1st axis
$1 2nd axis
$2 1st axis
Axis index
$1 3rd axis
0
0
Move 3rd axis to 4th
4
axis.
3 Move 4th axis to 3rd
axis.
6-4-9
2nd axis 3rd axis
R141 R142
X440
Y440
$1 1st axis
X460
Y470
X480
$1 2nd axis
X4A0
Y4A0
$2 1st axis
Y4D0
$1 3rd axis