
B-63942EN/02 NC FUNCTION 5.PROGRAM INPUT
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5.1 PROGRAM CODE
Either EIA code or ISO code may be used as program code. Which
program code is used for an input program is automatically identified
according to the first end-of-block code (EIA: CR or ISO: LF).
For the usable program codes, see the list of program codes in
Appendix.
5.2 LABEL SKIP
In one of the following cases, the label skip function is enabled, and
"LSK" is indicated on the screen:
• When the power is turned on
• When the CNC is reset
When the label skip function is enabled, all codes are ignored until the
first end-of-block (EOB) code is read. A portion ignored is referred to
as a "leader portion", and the data after the first end-of-block (EOB)
code is regarded as "significant information".
5.3 PARITY CHECK
• Program horizontal direction parity check (TH check)
Each character of an input program is checked for parity. If a
parity error is detected, an alarm is issued.
• Program vertical direction parity check (TV check)
Each block of an input program is checked for parity. If a block
(from the code immediately after an EOB to the next EOB)
includes an odd number of characters, an alarm is issued.
The TH check function and TV check function do not operate on a
portion skipped by the label skip function. In a comment portion, no
TH check is made. However, whether to include the number of
characters of a comment portion for a TV check can be chosen by
parameter setting. The TV check function can be enabled or disabled
by setting through the MDI panel.