GSK 980TDi, Руководство пользователя

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Chapter 3 G Commands
167
Ⅰ
Programming
or negative value of variable value as address value.
Example: F#103…when #103=15, its function is the same that of F15;
Z-#110…when #110=250, its function is the same that of Z-250;
2. Macro variables can replace macro variables values.
Format: “
＃
”+“9”+macro variables number
Example: if #100 = 205, #105 = 500,
The command function of X#9100 is the same as X500;
The command function of X-#9100 is the same as X-500
Note 1: If macro variables values exceed the maximum rang of command values, they cannot be used. For
example: #130 = 120, M#130 exceeds the maximum command value.
z Null variable
When the variable value is not defined, it is null, the variable #0 is always null and only is read
instead of writing.
1). Reference
When an undefined variable (null variable) is referred, the address is ignored.
#1=<null> #1=0
G00 X100 Z#1 is equal to G00 X100 G00 X100 Z#1 is equal to G00 X100 Z0
2). Operation
Except for using <null variable > to value, the <null variable> used to operation in other
conditions is the same as that of “0”.
#1=<null> #1=0
#2=#1
↓ (execution result)
#2=<null>
#2=#1
↓ (execution result)
#2=0
#2=#1
﹡
5
↓ (execution result)
#2=0
#2=#1
﹡
5
↓ (execution result)
#2=0
#2=#1+#1
↓ (execution result)
#2=0
#2=#1+#1
↓ (execution result)
#2=0
3). Condition expression
<null>s in EQ(=) & NE( ≠ ) are different to “0”.
#1=<null> #1=0
#1 EQ #0
↓
Valid
#1 EQ #0
↓
Invalid
#1 NE #0
↓
Invalid
#1 NE #0
↓
Invalid
#1 GE #0
↓
Valid
#1 GE #0
↓
Invalid
#1 GT #0
↓
Invalid
#1 GT #0
↓
Invalid