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2 Instructions
2-72
CP1E CPU Unit Instructions Reference Manual(W483)
TMHH/TMHHX
Applicable Program Areas
Operands
N: Timer Number
The timer must be between 0000 and 0015 decimal.
S: Set Value
TMHH (BCD): #0000 to #9999
TMHHX (Binary): &0 to &65535 (decimal) or #0000 to #FFFF (hex)
Operand Specifications
Flags
Function
• When the timer input is OFF, the timer specified by N is reset, i.e., the timer’s PV is reset to the SV
and its Completion Flag is turned OFF.
• When the timer input goes from OFF to ON, TMHH(540)/TMHHX(552) starts decrementing the PV.
The PV will continue timing down as long as the timer input remains ON and the timer’s Completion
Flag will be turned ON when the PV reaches 0000.
• The status of the timer’s PV and Completion Flag will be maintained after the timer times out. To
restart the timer, the timer input must be turned OFF and then ON again or the timer’s PV must be
changed to a non-zero value (by MOV(021), for example).
Instruction Mnemonic Variations
Function
code
Function
ONE-MS TIMER
TMHH --- 540
TMHH(540)/TMHHX(552) operates a decrement-
ing timer with units of 1-ms.
TMHHX --- 552
Symbol
TMHH TMHHX
BCD Binary
Area Step program areas Subroutines Interrupt tasks
Usage OK OK Not allowed
Operand Description
Data type
Size
TMHH TMHHX
N Timer Number TIMER TIMER 1
S Set Value WORD UINT 1
Area
Word addresses Indirect DM addresses
Constants CF Pulse bits TR bits
CIO WR HR AR T C DM @DM *DM
N --- --- --- ---
OK
--- --- --- --- ---
--- --- ---
S OKOKOKOK OKOK OK OK OK
Name Label Operation
Error Flag P_ER • ON if in BCD mode and S does not contain BCD data.
• OFF in all other cases.
TMHH(540)
N
S
S: Set value
N: Timer number
TMHHX(552)
N
S
S: Set value
N: Timer number