Dir - Hitachi NT2021XA Instruction Manual

Chapter 2 Syntax
Variable name

Dir

Rotation direction
monitoring
- Explanation
This variable can be used to monitor the direction of motor operation by the inverter. The data monitored with this variable
corresponds to the data monitored by the rotation direction monitoring function (d003). This variable is read-only.
- Sample program : Program to output the output frequency data to a general-purpose analog output while operating the motor
for reverse rotation at 60 Hz and forward rotation at 60 Hz
Label Mnemonic
U(00)=
LOOP U(01)=
UL(01)=
UL(01)=
UL(01)=
select
case
UL(00)=
case
UL(00)=
case else
UL(00)=
end select
YA(1)=
goto
Range of values
0: Stop
1: Forward rotation
2: Reverse rotation
parameter1 parameter2 parameter3
5000
Dir
FM
UL(01) * 5000
UL(01) / 6000
U(01)
1
U(00) + UL(01)
2
U(00) - UL(01)
U(00)
UL(00)
LOOP
Default Unit
- -
parameter4 parameter5
2-44
Data size Attribute
Unsigned
Readable
1-word data
: Set the offset data.
: Fetch the operation direction data.
: Fetch the output frequency data.
: Convert the scale to 0% to 50%.
: When the inverter operates the motor for
forward rotation
: When the inverter operates the motor for
reverse rotation
: When the motor is stopped
: Output the data to an analog output (AM
terminal).