Hitachi SJ700-2 Series Instruction Manual page 90

Chapter 5 Instruction Words
Variable name
TD (0) to
Timer contact output
TD (7)
Timer contact output
TDw
(word access)
- Explanation
The data in timer contact output variables "TD (0)" to "TD (7)" is changed only when these variables are
specified in the timer-start instruction (timer set) or delay operation instruction (delay on or delay off). A
timer contact output variable is set to "0" (off) when the counter corresponding to the contact output is
cleared to zero; the variable is set to "1" (on) when the counter stops counting.
While a timer counter variable "TC (k)" is being used for a free-running timer counter, timer contact
output variable "TD (k)" corresponding to the timer counter variable retains its status.
- Sample program: Program to accelerate the motor step-by-step by using a timer contact
：
TDw=
ACCEL=
DECEL=
SET-Freq=
LOOP FW=
timer set
SET-Freq=
wait
timer set
SET-Freq=
wait
timer set
SET-Freq=
wait
FW=
wait
SET-Freq=
goto
：
Range of values
(bit access)
0 to 255
0
1000
1000
0
1
TD(5) 10.00
1000
TD(5) = 1
TD(5) 10.00
3000
TD(5) = 1
TD(5) 10.00
6000
TD(5) = 1
0
RUN = 0
0
LOOP
Default
0: Off
0
1: On
0
: Set the acceleration time to 10 seconds.
: Set the deceleration time to 10 seconds.
: Set the output frequency to 0 Hz.
: Start forward rotation of the motor.
: Start the 10-second timer counter.
: Keep the output frequency at 10 Hz for 10 seconds.
: Wait until the timer contact is turned on.
: Start the 10-second timer counter.
: Keep the output frequency at 30 Hz for 10 seconds.
: Wait until the timer contact is turned on.
: Start the 10-second timer counter.
: Keep the output frequency at 60 Hz for 10 seconds.
: Wait until the timer contact is turned on.
: Wait until the motor stops.
: Set the output frequency to 0 Hz.
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Unit Data size Attribute
Unsigned
- 1-word Readable
data
Unsigned
- 1-word Readable
data