Other Reserved Variables; Ul (00) To Ul (03) - Hitachi SJ700-2 Series Instruction Manual

5.8 Other Reserved Variables

Variable name
U (00) to
User-defined
U (31)
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
：
U(00)=
U(02)=
U(03)=
：
Variable name
UL (00) to
Internal user
UL (07)
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
：
UL(00)=
if
UL(01)=
UL(00)=
SKIP U(05)=
U(05)=
U(05)=
YA(1)=
：
Range of values
0 to 65535
U(00) +
U(00) *
U(00) mod
Range of values
31
-2 to 2
Tmon
UL(00) >= 0
-1
U(01) * UL(00)
UL(00)
U(05) * 100
U(05) / 300
U(05)
Default
Data stored in
P100 to P131
U(01)
U(02)
U(01)
Default
31
-1 0
: Acquire the output torque data.
then SKIP : 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.
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Chapter 5 Instruction Words
Unit Data size
Unsigned
-
1-word data
Unit Data size
Signed
-
2-word data
Attribute
Readable
and writable
Attribute
Readable
and writable