Eaton ELC-PB, Programming Manual

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3 . I n s t r u c t i o n S e t
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3-489
API Mnemonic Operands Function
199 D ICF
S
1
, S
2
, D
Immediately Change Frequency
Bit Devices Word devices Program Steps
Type
OP
X Y M S K H KnX KnY KnM KnS T C D E F
S
1
*
S
2
* * *
D *
DVSPO: 13 steps
ELC ELCB ELCM
PB PC/PA/PH PV PB PH/PA
32 16 P 32 16 P 32 16 P 32 16 P 32 16 P
Operands:
S
1
: Target frequency to be changed
S
2
: Gap time and gap frequency
D
: Pulse output
address (Y0, Y2)
Description:
1. Max frequency for
S
1
: 100kHz. When the ICF instruction executes, it will immediately start to
change the frequency with the ramp-up/down process.
2. The ICF instruction must be executed after the execution of DVSPO or DPLSY instructions.
When this instruction is used together with the DVSPO instruction, operands
S
1
,
S
2
,
D
of the
DICF instruction must be assigned the same addresses
S
1
,
S
3
,
D
as DVSPO. When the
instruction is used with DPLSY, operands
S
1
and
D
must be assigned the same addresses as
S
1
and
D
of DPLSY
.
3. If the ICF instruction is used with the DPLSY instruction, operand
S
2
is invalid.
4. When the ICF instruction is used with the DVSPO instruction, parameter
S
2
functions the same
as
S
3
in
the
DVSPO instruction, specifying the gap time and gap frequency of the ramp-up/down
process.
5.
D,
the pulse output address supports only Y0 and Y2.
6. It is recommended that the instruction be applied in an interrupt subroutine to obtain a better
response time and more accurate execution...
7. For associated flags and registers, please refer to
Points to note
for the API 198 DVSPO
instruction.
Function Description:
1. If the target frequency is changed by using the DVSPO instruction, the timing change will be
delayed due to the program scan time and the gap time as shown below.