Other Reserved Variables; U (00) To U (31); Ul (00) To Ul (07) - Hitachi NT2021XA Instruction Manual

Chapter 2 Syntax
2.7

Other Reserved Variables

U (00) to
U (31)
User-defined variable
- Explanation
User-designed variables are the general-purpose functions that can be used as unsigned 1-word variables regardless of
format. The data written from a sequence program to the user-defined variables is not stored in the inverter's EEPROM. The
variables will restore the initial settings when the inverter power is turned off. The user-defined variables correspond to inverter
parameters "P100" to "P131". You can also change the settings of user-defined variables from the digital operator. The changes
made from the digital operator will be stored in EEPROM.
- Sample program
Label Mnemonic
U(00)=
U(02)=
U(03)=
UL (00) to
UL (07)
Internal user variable
- Explanation
Internal user variables are the general-purpose functions that can be used as unsigned 2-word variables, for example, to
temporarily store arithmetic operation results.
Note : If an arithmetic operation causes data overflow, an execution error (E45) will result.
- Sample program
Label Mnemonic
UL(00)=
if
UL(01)=
UL(00)=
SKIP U(05)=
U(05)=
U(05)=
YA(1)=
Variable name Range of values
0 to 65535
parameter1 parameter2
U(00) +
U(00) *
U(00) mod
Variable name Range of values
-2
parameter1 parameter2
UL(00) >=
U(01) *
U(05) *
U(05) /
Default
Data
stored in
P100 to
P131
parameter3 parameter4 parameter5
U(01)
U(02)
U(01)
Default
31 31
to 2 -1 0
parameter3 parameter4 parameter5
Tmon
0 then SKIP
-1
UL(00)
UL(00)
100
300
U(05)
2-34
Unit Data size
Unsigned Readable
-
1-word data and writable
Unit Data size
Signed Readable
-
2-word data and writable
: Acquire the output torque data.
: When the output torque is a positive value
: When the output torque is a negative value
(x -1)
: Convert the scale.
: Output the data to general-purpose analog
output.
Attribute
Attribute