Command Response Processing - Omron FH series User Manual

Command Response Processing

The ON/OFF timing of related signals from command input in control command response processing is indicated
in the timing chart below.
Timing Chart for Command Execution
The Command Request signal is used as the trigger for input/execution of commands from the Controller
(master) for operations such as measurement execution.
After command execution, switch the Command Request signal back to OFF using the Command
Completion signal = ON as the trigger.
Command Code
Command Parameter
Command
Area
Command Request
signal
Command Code Echo Back
Busy signal
Command Ready
signal
Response
Area
Response Code
Response Data
Command Completion
signal
(1) The Controller (master) sets the command code and command parameters.
(2) After checking that the Command Ready signal is ON and the Command Completion signal is OFF, the
Controller (master) turns the Command Request signal ON.
(3) The Sensor Controller (slave) turns ON the Busy signal.
(4) The Sensor Controller (slave) sets command echo back, the response code and response data, then
turns the Command Completion signal ON.
(5) The Controller (master) turns OFF the Command Request signal.
(6) The Controller Sensor (slave) turns OFF the Command Completion signal.
Vision System FH/FZ5 Series User's Manual
for Communications Settings (Z342)
ON
OFF
ON
OFF
ON
OFF
ON
OFF
(3)
ON
Control command is executing.
OFF
ON
OFF
ON
OFF
ON
OFF
ON
OFF
(1) (2)
*1: A timeout error will occur if the Command Request signals does not turn OFF within 10 seconds.
Then Command Completion signal and Busy signal will be forced to turn OFF.
*2: Busy signal are automatically switched from ON to OFF when command execution is completed.
(5)
*1
*2
*2
(6)
(4)
EtherCAT Connections (FH-1000 series/FH-3000 series only)
Specified time in the time out setting.
2
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