Mitsubishi Electric C80 Series Connection And Set Up Manual page 183

C80 Series Connection and Setup Manual
11 CNC CPU Initial Setup
(3) Restoration by SRAM data
(a) Select [Mainte] from the Screen group at the top of the CNC monitor 2 screen (GOT operation panel) and then
select [Psswd input] from the menu.
(b) Enter the password for the machine parameter and then press [INPUT]. This enables the next modal output.
(c) Select [Diagn] from the Screen group at the top of the CNC monitor 2 screen (GOT operation panel).
(d) Select [I/F dia] from the menu.
(e) Select [Model output] from the menu and enter "Y709/1" in the input area to reset the data protection key 1.
(f) Select [Mainte] from the Screen group at the top of the CNC monitor 2 screen (GOT operation panel).
(g) Press the return button on the menu to switch the menu display.
(h) Select [I/O] from the menu.
(i) Select [USB memory] for "A: Dev" and then select [Dir] from the menu.
(j) Select [From list] from the menu.
(k) Select "SRAM.BIN" displayed in the program list on the left.
(l) Press [INPUT] twice continuously.
(m) Select [Memory] for "B: Dev", select [Dir] from the menu and then enter "/DAT" in the input area.
(n) Select [Trnsfr A->B] from the menu and enter "Y" according to the displayed message.
When the message changed "Now, transferring data" to "Transfer completed", the restoration is completed.
(o) Turn the power OFF and ON.
CAUTION
Restoration by SRAM data is available only if the rotary axis motor has not rotated in a same direction 30,000
times or more since the acquisition of the data.
Otherwise, the zero point of the rotary axis will change by turning the power OFF and ON after writing the SRAM
data, which will cause danger. Make sure the zero point is not off the right position.
The use of this method should be limited to when necessary, such as when replacing an NC unit, and requires
enough safety confirmation before executing.
(Note) If "Z70 Abs posn error 0101" occurs, execute SRAM clear and data restoration or initialize the zero point.
(4) Correspondence between absolute position data and parameters
Correspondence between absolute position data and I/O parameter #10000s is shown below.
# Name
10001 absfint Absolute position setting completed I/O tempo
E0 The absolute position error saved when the basic position was
10002 SV077
set.
R0 The multi-rotation counter value of the detector saved when
10003 SV078
the basic point was set.
P0 The position in one rotation of the detector saved when the
10004 SV079
basic point was set.
P0 The position in one rotation of the detector saved when the
10005 SV080
basic point was set.
The distance from the machine basic position to the first grid point
10006 absg
(cunit unit).
SV077 － SV080
10007 abssum1
Checksum (:absn abs1x absg)
SV077 － SV080
10008 abseor1
EOR (:absn abs1x absg)
10009 abssum2 Parameter checksum
10010 abseor2 Parameter EOR
10011 absbase Zero point (micro) (cunit unit)
IB-1501452-C
Description
152
Timing of Updating
When the power is turned OFF and ON
after changing a parameter related to
absolute position detection.
When the status changes to "Completed"
during the initialization procedure.
The value in the #2 "Zero point" of
[Mainte] - [Absolute Position Setting]
screen. Updated by screen input.