Galil Motion Control manc 18x 6 Page 232
DMC-18x6 Command Reference
224
ZS
FUNCTION: Zero Subroutine Stack
DESCRIPTION:
The ZS command is only valid in an application program and is used to avoid returning from an
interrupt (either input or error). ZS alone returns the stack to its original condition. ZS1
adjusts the stack to eliminate one return. This turns the jump to subroutine into a jump. Do
not use RI (Return from Interrupt) when using ZS. To re-enable interrupts, you must use II
command again.
The status of the stack can be interrogated with the operand _ZSn - see operand usage below.
ARGUMENTS: ZS n
where
n = 0 Returns stack to original condition
n = 1 Eliminates one return on stack
USAGE: DEFAULTS:
While Moving
Yes
Default Value
0
In a Program
Yes
Default Format
3.0
Command Line
No
Controller Usage
ALL CONTROLLERS
OPERAND USAGE:
_ZSn contains the stack level for the specified thread where n = 0 to 7.
EXAMPLES:
II1
Input Interrupt on 1
#A;JP #A;EN
Main program
#ININT Input
Interrupt
MG "INTERRUPT"
Print message
S=_ZS Interrogate
stack
S= Print
stack
ZS Zero
stack
S=_ZS Interrogate
stack
S= Print
stack
EN End
