Omron SYSMAC CS Series, Reference Manual, Page: 270 / 1405

230
Sequence Control Instructions
Section 3-5
the instructions between JMP(004) and JME(005) are skipped regardless of
the status of the execution condition.
Because all of instructions between JMP(004)/CJP(510)/CJPN(511) and
JME(005) are skipped when the execution condition for JMP(004) is OFF, the
cycle time is reduced by the total execution time of the skipped instructions. In
contrast, processing time equivalent to NOP(000) processing is required for
instructions between JMP0(515) and JME0(516), so the cycle time is not
reduced as much with those jump instructions.
The following table compares the various jump instructions.
Flags (JMP)
Note For CJ1M-CPU11 and CJ1M-CPU21 CPU Units, the range is 0 to 255 (0000
to 00FF hex).
Precautions All of the outputs (bits and words) in jumped instructions retain their previous
status. Operating timers (TIM, TIMX(550), TIMH(015), TIMHX(551),
TMHH(540), TMHHX(552), TIMU(541), TIMUX(556), TMUH(544), and
TMUHX(557)) continue timing because the PVs are updated even when the
timer instruction is not being executed.
When there are two or more JME(005) instructions with the same jump num-
ber, only the instruction with the lower address will be valid. The JME(005)
with the higher program address will be ignored.
Instructions in this section are not
executed and output status is
maintained. The instruction execution
time for these instructions is eliminated.
Instructions
jumped
Execution condition
Instructions
executed
Item JMP(004)
JME(005) CJP(510)
JME(005)
CJPN(511)
JME(005)
JMP0(515)
JME0(516)
Execution condition for jump OFF ON OFF OFF
Number allowed 1,024 total (256 for CJ1M-CPU11/21.) No limit
Instruction processing when jumped Not executed. NOP(000) processing
Instruction execution time when
jumped None Equivalent to
NOP(000) instructions
Status of outputs (bits and words)
when jumped Bits and words maintain their previous status.
Status of operating timers when
jumped Operating timers continue timing.
Processing in block programs Always jump. Jump when ON. Jump when OFF. Not allowed.
Name Label Operation
Error Flag ER ON if N is not within the specified range of 0000 to 03FF.
(See note.)
ON if there is a JMP(004) in the program without a
JME(005) with the same jump number.
ON if there is a JMP(004) in the task without a JME(005)
with the same jump number in the task.
OFF in all other cases.