Omron SYSMAC FH Series User Manual page 421

Additional Information
The GATE signal will not be output if there is no data set for parallel judgment output and paral-
lel data output.
If only the OR signal is output, read the OR signal when the BUSY signal turns OFF.
• Handshaking
Measurement results are output only after it is determined that the external device can receive
data.
Handshaking is effective for sequentially outputting many measurement results, which is a relia-
ble way to transfer data.
For details, refer to Data Output Control with Handshaking on page 1 - 25.
• Synchronization Output
The measurement results are output after the STEP signal has turned ON for the number of de-
lays set in Number of delays.
The output timing of the measurement results from the Sensor Controller can be offset according
to the actual timing of processing on the line.
Example: Sequential Feed Line that Uses a Star Wheel
The discharge timing for when a defective part is found and the measurement results output tim-
ing can be synchronized.
Additional Information
• As the steps will be counted according to the number of times the STEP signal turns ON
while Synchronized output is selected, set that results are output only once for each meas-
urement. (Place only one Output Unit in the measurement flow. In the case of Parallel Judg-
ment Output and Parallel Data Output, either one can be set. In Parallel Data Output, only
one output item is allowed.)
• Designate only the STEP signal for measurement trigger input.
When a serial command is used for single measurement or continuous measurement, the
output timing will not match and this can cause Sensor Controller malfunctions.
FH/FHV Series Vision System User's manual for Communication Settings (Z342-E1)
2 Methods for Connecting and Communicating with External Devices
3rd
4th
2nd
1st
Encoder
STEP
Set value
Output control: Synchronous output
Delay steps: 4
Sensor Controller
OK
Result output
NG
Discharge device
GATE
DO
2
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