GSK GSK980TDc, Руководство пользователя

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Chapter 3 G Commands
101
Ⅰ
Progra
mming
Fig. 3-28
Command specifications:
●
ns
～
nf blocks in programming must be followed G72 blocks. If they are in the front of G72
blocks, the system automatically searches and executes ns
～
nf blocks, and then executes the
next program following nf block after they are executed, which causes the system executes
ns
～
nf blocks repetitively;
● ns ～ nf blocks are used for counting the roughing path and the blocks are not executed when
G72 is executed. F, S, T commands of ns
～
nf blocks are invalid when G72 is executed, at the
moment, F, S, T commands of G72 blocks are valid. F, S, T of ns ～ nf blocks are valid when
executing ns
～
nf to command G70 finishing cycle;
●
There are G00, G01 without the word X(U) in ns block, otherwise the system alarms;
●
The dimensions in X, Z direction must be changed monotonously (always increasing or
reducing) for the finishing path;
●
In ns
～
nf blocks, there are only G commands: G01, G02, G03, G04, G05, G6.2, G6.3, G7.2,
G7.3, G96, G97, G98, G99, G40, G41, G42 and the system cannot call subprograms
(M98/M99);
●
G96, G97, G98, G99, G40, G41, G42 are invalid when G72 is executed, and are valid when
G70 is done;
● When G72 is executed, the system can stop the automatic run and manual traverse, but
return to the position before manual traversing when G72 is executed again, otherwise, the
following path will be wrong;
● When the system is executing the feed hold or single block, the program pauses after the
system has executed end point of current path;
●
d
△
, u are specified by the same U and different with or without being specified P, Q
△
commands;
●
There are no the same block number in ns~nf when compound cycle commands are
executed repetitively in one program;
●
G72 cannot be executed in MDI, otherwise, the system alarms;
● The tool retraction point should be high or low as possible to avoid crashing the workpiece.