The input counter is reset to zero if the count direction input is UP and a preset (hardware or software) or Load Value command is sent to the module.
When counting in the UP direction, the input counter increments to the maximum value, the next input pulse sets the counter to zero and it continues counting back up to the maximum value.
The input counter is set to maximum count if the count direction is down and a preset (hardware or software) or Load Value command is sent to the module.
When counting in the DOWN direction, the input counter is decremented from the maximum value to zero. The next pulse resets the input counter to the Maximum value and the increment down starts again.
This function disables the input counter, causing it to stop incrementing and hold the count accumulated prior to disabling.
When configured in the count mode, outputs will turn on for defined times when setpoints or maximum values have been reached.
No output assertion in two, 32 bit counter mode or rate sample.
Programmed ON time for outputs can be set for one channel, one output and one trigger point only.
In a running controller, latched outputs are turned off only by a hardware RESET input. If no reset is provided, the outputs latched on will turn off when the controller is stopped.
OUTPUT COIL MODE available values:
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SETPOINT: ON when set point is reached, back to 0 automatically when the reference is exceeded.
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LATCHED SETPOINT: ON when you reach the set point, it remains ON until no hardware reset applied (input).
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TERMINAL COUNT: ON when it exceeds the max.
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LATCHED TERMINAL: ON when it exceeds the max and will be maintained as long as no hardware reset (input).
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TIMED SETPOINT: ON from a set point and held ON during a defined time.
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TIMED TERMINAL: ON when it exceeds the max and held ON for a defined time.
This is both a hardware and software function. In the event that both methods are used, the last one executed has precedence.
An input counter will be automatically preset whenever a new maximum value or rate sample time is loaded.
Both hardware and software enables are required for an input counter to operate. An input counter will be automatically software enabled whenever a new maximum value is loaded or a preset (hardware or software) is sent to it.
The rate sample value is held and may be accessed during count operations. The value read is from the last configured and completed rate sample interval.
When the module is configured for quadrature mode operation, the counter requires encoder pulses on inputs A and B.
In quadrature mode, all input signal edges are counted. A 60 count/revolution encoder will produce a count of 240 for one shaft rotation.
