Rockwell Automation 48MS MultiSight Vision Sensor - Manual (Page 61)

MultiSight™ User Manual
Maintenance
10000000877(02) 61
When changing detectors, if a detector is selected that does not have the Control Input parameter set to Activate 0 to 31 (or Activate
0 or 1), it is not possible to change to another detector using the control input IN2. The control input has a different function and
therefore is no longer capable of switching to another detector. For this reason, it must be confirmed that the control system only
selects detectors that are configured to allow the control input to change detectors. If an incorrectly configured detector is selected,
the sensor may no longer respond and therefore would need to be reconfigured by connecting to the software.
Recommended Procedure:
Configure detector 1 with the desired parameters, including the above required parameters (Control Input = Activate 0 to 31,
Shutter Adjustment = Manual, Trigger Mode = Triggered).
Use the Copy command to copy the required parameters from Detector 1 to the other detectors required for use (instructions on
pages 25 and 29).
Set up the control system to generate the appropriate number of pulses for detector selection during the OUT4 Ready signal.
Testing Saved Detectors:
When all detectors to be used have been configured as described above, a detector can be selected using the radio buttons in the
Select Detector window. Put the sensor into Run mode (Run command). The sensor starts with the last detector selected (via the
radio buttons or the control input IN2). The detector can now be tested using various “good” or “bad” parts. Parameters such as
Shutter or Threshold value can be adjusted if required. To test other detectors, select the radio button of that detector.
Control Input: Teach Temporary or Teach Permanent (Case 4)
The parameter Control Input can be set up to allow the control input IN2 to allow a pattern Teach for the first detector. This gives the
input on the PWR and I/O connector the same functionality as the Teach command button so that the software does not have to be
connected for a Teach function to occur. (Only for the first detector.) The Teach function occurs when the external trigger (IN1)
transitions low (GND) to high (V+/24V DC) while the control input IN2 is high (V+/24V DC). The signal sequence is as follows:
High level (V+/24V DC) on control input IN2
Rising edge (GND to V+) to trigger input IN1
Note that if a second trigger on IN1 occurs while the control input IN2 is held high (V+) a second Teach function will occur. Be sure
that the control input IN2 is pulled low (GND) after the Teach function is completed.
Applications where the object is continuously moving:
Pull control input IN2 high (V+) for at least one external trigger/image exposure. The new pattern for detector 1 is saved and this
new configuration applies immediately. If the signal at input IN2 is held high (V+) for several trigger cycles (several image
exposures), the last exposure is saved as the new pattern for the first detector.
Applications with Timer Delays:
Apply a High level (V+/24V DC) to control input IN2 when the next target object is being transported to the evaluation position,
therefore causing a trigger signal,
OR
when the reference object is in the correct position and triggering has already taken place (due to a Trigger Delay), the trigger signal
must be interrupted and re-triggered (the teach is initiated by the rising edge of the trigger input IN1). Only after this should the
signal at control input IN2 fall to low level (GND). Interruption and re-application of the trigger signal can be achieved by installing a
control relay in the trigger circuit or by using a PLC to drive the trigger (as opposed to directly wiring from a trigger sensor).