TPM
STP-M112A/B Quick Start
10
direction.
A variety of counter circuits (STP-M112A only)
The following three counters are available.
Counter
Use
Count input
COUNTER1
28-bit counter for controlling the specified position
Output pulse
COUNTER2
28-bit counter for controlling the mechanical set position Output pulse, EA/EB input
COUNTER3
16-bit counter for controlling differences between the
specified position and the actual machine position. Or,
16-bit general-purpose counter with a synchronous signal
output function.
Output pulse, EA/EB input
Outputs pulses at 1/4096 of
the reference clock, EA/EB
input
You can reset any of the counters with a command.
And, you latch the counter data with a command or by supplying an ORG signal.
Comparator (STP-M112A only)
The driver has three comparator circuits, which allow it to compare between preset values and internal
counter values.
Select from COUNTER 1 (specified position counter), COUNTER 2 (mechanical position counter), or
COUNTER 3 (general-purpose and difference counter) to make comparisons.
In addition, comparator 1 and 2 can also be used as software limit counters (+SL, -SL).
Software limit function
You can set software limits using the comparator 2 circuit.
When the motor operation enters the software limit range, the motor immediately stops or decelerates and
stops. Then, it can only be driven in the reverse direction.
Backlash correction
The driver has a backlash correction function.
The backlash correction function corrects feed amount each time the feed direction changes.
Synchronization signal output function
The driver can output pulse signals at a specified rate for a specified interval.
Vibration restriction function
Preset a control constant and this function adds 2 pulses each to both forward and reverse rotations that
occur just before stopping the motor.
This function reduces the mechanical shock that can occur on the motor axis when it is stopped.
