Omron FH series User Manual page 330

Input Timing of Input Signals
STEP Signal Input Timing
The measurement trigger STEP signal is input with the following timing.
ON
STEP signal
OFF
ON
BUSY signal
OFF
1
Turn ON the STEP signal when the BUSY signal is OFF.
When multiple inputs are used, the STEP signal can be turned ON when the READY signal is ON.
However, if the image mode is set to Through Mode, the READY signal will always be OFF, so
check the status of the BUSY signal to determine when to input the STEP signal.
2
Check that the BUSY signal is ON, then turn OFF the STEP signal.
Note
If the STEP signal is turned ON when the READY signal is OFF, no measurements will be executed and the ERROR
signal will turn ON.
DI0 to DI7 (Command Execution) Timing
• FH
Parallel DI0 to DI6
Parallel BUSY signal
(Command Completion Flag)
When executing continuous measurement commands, turn OFF DI7 when you want to stop
continuous measurements, as shown below.
For continuous measurement commands, the ACK signal will remain OFF.
Parallel DI0 to DI6
(continuous measurements)
Parallel BUSY signal
(Command Completion Flag)
328
Parallel Communications
OFF when the BUSY signal is ON.
ON when the BUSY signal is OFF.
(1)
ON
Parallel DI7
OFF
ON
OFF
Command Request
ON
ACK signal
OFF
ON
Parallel DI7
OFF
ON
OFF
ON
ACK signal
OFF
(2)
1 ms
(3) (4)
Timeout [s]*
1 ms
Continuous measurement
Vision System FH/FZ5 Series User's Manual
for Communications Settings (Z342)