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 commands for measurement execution or other processing that are stored in advance in the memory of
the PLC are input and executed when you turn ON the Command Request (EXE) signal.
The Command Completion (FLG) signal turns ON when execution of the control command is completed. Use
this as the trigger to turn OFF the Command Request (EXE) signal.
Command Code
(CMD-CODE)
Command Parameter
Command Area
(CMD-PARAM)
Command Execute
(EXE) signal
Command Code
(CMD-CODE)
(BUSY) signal
Response Area
Response Code
(RES-CODE)
Response Data
(RES-DATA)
Command Completion
(FLG) signal
*1: A timeout error will occur if you do not turn off the Command Execution (EXE) signal within 10
seconds after the Command Completion (FLG) signal is turned ON.
Command Completion (FLG) signal and BUSY signal will be forcefully turned OFF.
*2: Busy (BUSY) signal is automatically switched ON to OFF when the command execution is completed.
1
The command code and command parameters are set from the PLC.
2
Next, confirm that the Busy (BUSY) signal and the Command Completion (FLG) signal
have turned OFF and then turn ON the Command Request (EXE) signal again. A request
is sent to the Sensor Controller.
3
The Sensor Controller executes the command and turns ON the Busy (BUSY) signal
when the request is received.
4
The Busy (BUSY) signal is turned OFF when the Sensor Controller has finished
execution.
5
The PLC (user) turns OFF the Command Request (EXE) signal when the Command
Completion (FLG) signal turns ON.
6
The Sensor Controller confirms that the Command Request (EXE) signal is OFF and
automatically turns OFF the Command Completion (FLG) signal.
Vision System FH/FZ5 Series User's Manual
for Communications Settings (Z342)
ON
OFF
ON
OFF
ON
OFF
ON
OFF
(3)
ON
Busy
Control command is running.
OFF
ON
OFF
ON
OFF
ON
OFF
(1) (2)
(5)
*1
Specified time in the time out setting.
*2
(6)
(4)
Communicating with EtherNet/IP
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