Omron SYSMAC CJ Operation Manual page 195

All BASIC commands
4-2-150 MARKB
Example loop:
WAIT UNTIL IN(punch_clr)=ON
MOVE(index_length)
REGIST(3)
WAIT UNTIL(MARK)
MOVEMODIFY(REG_POS + offset)
WAIT IDLE
GOTO loop
See also AXIS, REGIST, REG_POS.
/i
Type Axis parameter (read-only)
Syntax MARKB
Description The MARKB is set to FALSE when the REGIST command has been
executed and is set to TRUE when the primary registration event
occurs. Only when this parameter is TRUE, the REG_POSB value is
correct.
Arguments N/A
Example IF MARKB AXIS(2) THEN
PRINT "Secondary registration event for axis 2 occurred"
ENDIF
See also AXIS, MARK, REGIST, REG_POSB.
Section 4-2
183