Mitsubishi Electric C80 Series Instruction Manual page 340

C80 Series Instruction Manual
9 Machining a Workpiece
Precautions
(1) Set the tool offset amounts and parameters before proceeding the program restart search. If they are not set before-
hand, the axes will not return to the proper machining start position.
(2) The axes will not return to the proper machining start position if a program using the user macro external signal input,
machine coordinate readout or external mirror image command executes the restart search.
(3) If an attempt was made to shift the coordinate systems by manual or MDI interrupt the last time the machining program
was being executed, the axes will not return to the proper machining position.
(4) When using the type 1, a top search for the head of the program is not available. Restart search of the type 1 searches
from the previous operation start block and locates the designated block as it memorizes the operation start block pre-
viously operated.
(5) When "#8914 Auto Top search" is set to "0" for the type 2, an error message "Top search not completed" appears if the
search is attempted directly with the type 2 without executing the top search. Conduct the top search first.
(6) The macro statement blocks cannot be searched for both type 1 and type 2. It is possible to execute the restart search
if the control parameter "#8101 MACRO SINGLE" is set to ON. However, note that the tool path may change because
of the radius compensation, the corner R/C, and geometric read ahead blocks.
(7) In a multi-part system, perform restart search operation in each part system.
(8) When the linear-type rotary axis returns to the restart position, control returns to the workpiece coordinate position.
(9) A program restart search is not available at the head of the program. Restart search settings are possible, but control
may not return to the correct position when the head of the program is searched.
(10) If the parameter "#1151 rstini" is set to "0" (No reset initial) in the program without the sequence number, a restart
search (type 1) may not function properly after reset 1 has been executed. Therefore, assign a sequence number to
each program.
(11) If INPUT/search is carried out without designating any value in the input area, a restart search is performed using the
previously executed ONB number (type 1 only). If a reset is executed during MDI interruption processing, a restart
search is performed using the previous ONB number for MDI interruption.
(12) If INPUT/search is carried out without designating any value in the input area, the position of the ONB number that first
matches the designated condition is searched at restart, regardless of the number of repetitions.
(13) When the operation mode is set to the MDI mode, a restart search is not available. If an attempt is made to carry out
a restart search, the operation message "Can't search in MDI mode" is displayed.
(14) Restart search is available for a program that has a file name consisting of up to 32 characters. Restart search is not
available for a program that has a file name consisting 33 or more characters.
(15) A search error will occur if an intended ONB is not found even M99 block is detected in the main program.
(16) A error will occur if the M99 block in the main program is searched.
(17) When "#1122 pglk_c" (Program display lock C) is set to "2", the restart search cannot be executed as "Program display
lock C" is applied.
(18) If both N and B are omitted, it will be assumed as the head of the program and the number of repetitions is considered
as "1" even the P number is designated.
(19) When either N or B is omitted, the omitted one is assumed as "0".
(20) Restart search cannot be carried out for a block executing 3-dimensional circular interpolation, cylindrical interpolation,
polar coordinate interpolation, milling interpolation or tool center point control. A program error (P49) will occur.
(21) When you execute the restart search to a block in synchronous tapping cycle modal, issue the S code for a tapping
spindle from MSTB history menu. If it is not issued, the tapping spindle execute the synchronous tapping with current
gear step without changing the gear.
(22) The number of program repetitions, "P", can be designated up to the total value of the same number of sub-program
repetitions, "L", described on the program.
(23) When "#8129 Subpro No. select" is set to "1" or "2", it triggers a restart search on a sub-program with the O number.
Therefore, to designate the program number, it must be prefixed by an "O".
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