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Timer and Counter Instructions Section 3-5
The following table shows the operation of MTIM(543)/MTIMX(554) for the
four possible combinations of the reset and pause bits.
The reset and pause bits are effective only when the execution condition for
MTIM(543)/MTIMX(554) is ON.
Flags
Precautions Unlike most timers, MTIM(543)/MTIMX(554) does not use a timer number.
(Timer area PV refreshing is not performed for MTIM(543)/MTIMX(554).)
When the PV reaches 9999, the PV will be reset to 0000 and all of the Com-
pletion Flags will be turned OFF.
If in BCD mode and an SV in S through S+7 does not contain BCD data, that
SV will be ignored. An error will not occur and the Error Flag will not be turned
ON.
Since the Completion Flag for MTIM(543)/MTIMX(554) is in a data area it can
be forced set or forced reset like other bits, but the PV will not change.
Reset bit
(Bit 08)
Pause bit
(Bit 09)
Operation
OFF OFF The PV will be updated and the corresponding Completion
Flag will be turned ON when SV ≤ PV.
ON The PV will not be updated and MTIM(543)/MTIMX(554)
will be treated as NOP(000).
ON OFF The PV will be reset to 0000 and the Completion Flags will
be turned OFF. The PV will not be updated.
ON
SV 7
SV 2
SV 1
SV 0
0
0
toto
Timer input
Timer PV (D2)
Bit 7
Timer PV
Timer SVs
Bit 2
Bit 1
Bit 0
Completion
flags (D1)
Name Label Operation
Error Flag ER ON if the PV contained in D2 is not BCD.
OFF in all other cases.
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