Mitsubishi A1SD75M1, User Manual

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12 - 67
MELSEC-A
12 CONTROL AUXILIARY FUNCTIONS
[3] Precautions during control
The following precautions are for the case where the "infinite length mode" is selected
as the absolute position restoration mode and the absolute position is detected for
infinite positioning control.
(1) The following table indicates usable hardware versions and software versions
of the modules.
Model name Hardware version Software version
AD75M1 F or later
AD75M2 F or later
AD75M3 G or later
A1SD75M1 G or later
A1SD75M2 G or later
A1SD75M3 H or later
W or later
If the hardware version is earlier than the one indicated in the above table and
the software version is as indicated in the above table, selection of the "infinite
length mode" in " Pr.59 Absolute position restoration selection" will result in an
error "absolute position restoration selection error" (error code: 998) when the
PLC READY signal (Y1D) turns from OFF to ON.
(2) To switch the absolute position restoration mode to the "infinite length mode",
make a machine zero point return after satisfying the following conditions (a) to
(c). If any of (a) to (c) is not satisfied, the absolute position restoration mode
turns to the "standard mode" on completion of the machine zero point return.
(a) " Pr.1 Unit setting" is "2: degree".
(b) The software stroke limit function (refer to section 12.4.3) is invalid.
(c) " Pr.101 Amplifier setting" is "1: Absolute position detection valid".
(3) " Md.30 Machine feed value" cannot be used.
(4) The following control methods cannot be executed.
•
" Da.2 Control method" "03
H
: 1-axis fixed-dimension feed control"
•
" Da.2 Control method" "06
H
: 2-axis fixed-dimension feed control"
•
" Da.2 Control method" "0F
H
: Speed/position changeover control (forward
run)"
•
" Da.2 Control method" "10
H
: Speed/position changeover control (reverse
run)"
•
"
Da.2
Control method" "11
H
: Current value change"
If any of the above is executed, an error "control method setting error" (error
code: 524) occurs.
(5) The following positioning starts cannot be executed.
•
Positioning start when the " Cd.11 Positioning start No." is "9002: High-speed
zero point return"
•
Positioning start when the " Cd.11 Positioning start No." is "9003: Current
value change"
If either of the above is executed, an error "outside start number range" (error
code: 543) occurs.