602
Auxiliary Area Allocations by Function Appendix C
Name Description Read/Write Updated
Inverter Fre-
quency Com-
mand Value
This word contains the automatically calculated fre-
quency command value for the inverter. 
Data range: 0000 to FFFF hex (0.00 to 655.35 Hz) (0.01-
Hz increments, unsigned) 
Set the Power Supply Frequency for One Motor Revolu-
tion per Second, Number of Encoder Pulses for One 
Motor Revolution, and Error Counter Cycle in the PLC 
Setup before using this value. 
Read • Cleared when power is turned ON.
• Cleared when operation starts.
• Cleared when an error occurs in 
the error counter.
• Updated each error counter cycle. 
Present Value of 
Unsigned Output 
Value
These words contain the present value of the unsigned 
output value (output value = present value of error 
counter × error counter cycle (s) × gain).
Data range: 0000 0000 to 8000 0000 hex 
(0 to 2,147,483,648)
The maximum and minimum output values are applied.
Read • Cleared when power is turned ON.
• Cleared when operation starts.
• Cleared when an error occurs in 
the error counter.
• Updated each error counter cycle. 
Present Value of 
Signed Output 
Value
These words contain the present value of the signed out-
put value (output value = present value of error counter × 
error counter cycle (s) × gain).
Data range: 8000 0000 to 7FFF FFFF hex 
(−214,748,348 to 214,748,347)
The maximum and minimum output values are applied.
Read • Cleared when power is turned ON.
• Cleared when operation starts.
• Cleared when an error occurs in 
the error counter.
• Updated each error counter cycle. 
Operation Com-
mand Flag
This flag turns ON during an inverter positioning opera-
tion command. 
ON: Operation command executed.
OFF: Stop command executed. 
Read • Turned OFF when power is turned 
ON.
• Turned OFF when operation starts.
• Turned OFF when CPU Unit opera-
tion stops.
• Turned OFF when inverter posi-
tioning is stopped (immediate stop) 
using INI instruction.
Forward Operation 
Command Flag
This flag turns ON during an inverter positioning forward 
operation command. 
ON: Forward command in progress
OFF: Reverse command in progress or stopped
Read • Turned OFF when power is turned 
ON.
• Turned OFF when CPU Unit opera-
tion starts.
• Turned OFF when CPU Unit opera-
tion stops.
• Turned OFF when error counter 
present value is 0 or less than 0 
(negative).
• Turned ON when error counter 
present value is greater than 0 
(positive).
Reverse Opera-
tion Command 
Flag
This flag turns ON during an inverter positioning reverse 
operation command. 
ON: Reverse command in progress
OFF: Forward command in progress or stopped
Read • Turned OFF when power is turned 
ON.
• Turned OFF when CPU Unit opera-
tion starts.
• Turned OFF when CPU Unit opera-
tion stops.
• Turned OFF when error counter 
present value is 0 or greater than 0 
(positive).
• Turned ON when error counter 
present value is less than 0 (nega-
tive).
In-position Flag This flag turns ON when inverter positioning is in position. 
ON: In position
OFF: Not in position
Read • Turned OFF when power is turned 
ON.
• Turned OFF when CPU Unit opera-
tion starts.
• Turned OFF when CPU Unit opera-
tion stops.
• Turned OFF when pulses are being 
output to error counter.
• Turned OFF absolute value of error 
counter present value is greater 
than in-position range.
• Turned OFF when pulse output to 
error counter is stopped and abso-
lute value of error counter present 
value is less than in-position range