Mon Param Statement - Hitachi NT2021XA Instruction Manual

- Sample program : Program to change the overload restriction level according to output frequency
(Code area [Code Window])
Label Mnemonic
U(00)=
U(01)=
U(02)=
U(03)=
chg param
FW=
wait
chg param
wait
chg param
(Parameter)
b031 = 10 (can be updated during operation)

mon param statement

- Format
mon param <display code> <variable>
- Explanation
This instruction reads the content of the inverter parameter specified by
<variable>. The range of parameter settings depends on the standard inverter specifications. For the inverter parameters and
ranges of their settings, refer to the Inverter Instruction Manual.
- Sample program : Program to check whether the inputs of frequency command and acceleration/deceleration time are
assigned to the easy sequence function
Label Mnemonic
entry
Yw=
mon param
mon param
if
if
Y(00)=
goto
SKIP Y(01)=
LBL1 end
parameter1 parameter2 parameter3
2000
1500
1000
1000
b022 U(00)
1
FM >= U(03)
b022 U(01)
FA1 = 1
b022 U(02)
Instruction to read a parameter
Format
parameter1 parameter2 parameter3
0
A001 U(00)
P031 U(01)
U(00) <> 7
U(01) <> 3
1
LBL1
1
parameter4 parameter5
This instruction assigns the content of the inverter
parameter specified by
<variable>.
<display code>, and assigns the read content to
parameter4 parameter5
then SKIP
then SKIP
2-31
Chapter 2 Syntax
: Set 200% in variable "U (00)."
: Set 150% in variable "U (01)."
: Set 100% in variable "U (02)."
: Set 10 Hz in variable "U (03)."
: Change the setting of "b022" to 200.0%
: Wait until the output frequency reaches
10 Hz.
: Change the setting of "b022" to 150.0%.
: Wait until acceleration ends.
: Change the setting of "b022" to 100.0%.
Description
<display code> to
: Assign the content of A001 to U (00).
: Assign the content of P031 to U (01).
: When A001 is not "07"
: When P031 is not "03"
: Turn Y (00) on.
: Turn Y (01) on when the process ends.