Parallel Communications; Communications Processing Flow - Omron FH series User Manual

Parallel Communications

This section describes the required communication settings, communication specifications, input/output format,
and communication timing chart for parallel communication between the Sensor Controller and external devices.

Communications Processing Flow

The Sensor Controller communicates with external devices via a parallel interface.
I/O Signals and Data for Communicating with External Devices
This section describes the basic connections and signal flow with external devices.
External device
Trigger sensor
Input
Input signal
• Measurement Trigger (STEP)
• Command input (DI0 to DI7)
Inputs
You can input the following signals to the Sensor while the Main Window is displayed.
• Measurement Trigger (STEP signal)
Measurement is performed once when STEP signal turns ON. (Single Measurement)
• Command Input (DI0 to DI7 Signals)
You can send commands and control the Sensor by turning the DI0 to DI7 signals ON and OFF.
Refer to the following section for details on Sensor control commands.
Reference: Command Formats (p.332)
IMPORTANT
Note that if DI7 is ON after the command is executed, the command will be executed repeatedly.
Reference: DI0 to DI7 (Command Execution) Timing (p.328)
Outputs
Each time measurement is performed, the measurement results are output.
The following measurement results can be output:
• Overall Judgement (OR signal)
The results of more than one processing item are judged.
The overall judgement will be NG if even one of the individual judgement results is NG.*1
*1: With the default settings, output is performed even if the overall judgement result is NG, but this can be changed so that
output is performed only when the overall judgement result is OK. Reference:
Specifications (p.305)
• Parallel Data Output (DO0 to DO15 Signals)
The measured values of processing items or the calculation results of expressions are output.
• Parallel Judgement Output (DO0 to DO15 Signals)
The measured values of the processing items or calculation results are judged and the judgement results
are output.
Vision System FH/FZ5 Series User's Manual
for Communications Settings (Z342)
Sensor Controller
Outputs
Output Signals
• Overall Judgement (OR signal)
• Parallel Judgement Output (DO0 to DO15)
• Parallel Data Output (DO0 to DO15)
External device
PLC
Setting the Output Signal

Parallel Communications

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