OMRON CJ1G-CPU45H PLC

OMRON CJ1G-CPU45H PLC

9-12 TR (Temporary Relay) Area

The TR Area contains 16 bits with addresses ranging from TR0 to TR15.

These temporarily store the ON/OFF status of an instruction block for branch

ing. TR bits are useful when there are several output branches and interlocks

cannot be used.

The TR bits can be used as many times as required and in any order required

as long as the same TR bit is not used twice in the same instruction block.

TR bits can be used only with the OUT and LD instructions. OUT instructions

(OUT TR0 to OUT TR15) store the ON OFF status of a branch point and LD

instructions recall the stored ON OFF status of the branch point.

TR bits cannot be changed from a Programming Device

Timer Area

The 4.096 timer numbers (T0000 to T4095) are shared by the HUNDRED-MS

TIMER (TIM/TIMX(550)), TEN-MS TIMER (TIMH(015)/TIMHX(551)), ONE

MS TIMER (TMHH(540)/TMHHX(552)), TENTH-MS TIMER (TIMU(541)/

TIMUX(556)) (see note), HUNDREDTH-MS TIMER (TMUH(544)/

TMUHX(557)) (see note), ACCUMULATIVE TIMER (TTIM(087)/TTIMX(555)),

TIMER WAIT (TIMW(813)/TIMWX(816)), and HIGH-SPEED TIMER WAIT

(TMHW(815)/TMHWX(817)) instructions. Timer Completion Flags and

present values (PVs) for these instructions are accessed with the timer num

bers. (The TIML(542), TIMLX(553), MTIM(543), and MTIMX(554) instructions

do not use timer numbers.)

Note CJ1-H-R CPU Units only.

When a timer number is used in an operand that requires bit data, the timer

number accesses the Completion Flag of the timer. When a timer number is

used in an operand that requires word data, the timer number accesses the

PV of the timer. Timer Completion Flags can be used as often as necessary

as normally open and normally closed conditions and the values of timer PVs

can be read as normal word data.

With CJ1-H and CJ1M CPU Units, the refresh method for timer PVs can be

set from the CX-Programmer to either BCD or binary. With CJ1 CPU Units, it

can only be set to binary.

Note It is not recommended to use the same timer number in two timer instructions

because the timers will not operate correctly if they are timing simultaneously.

(If two or more timer instructions use the same timer number, an error will be

generated during the program check, but the timers will operate as long as the

instructions are not executed in the same cycle.)

The following table shows when timer PVs and Completion Flags will be reset