Omron FH series User Manual page 198

Output Signals
Signal
BUSY
FLG
196
Communicating with PLC Link
Signal name Function
This signal tells when com-
mands and other external
inputs cannot be acknowl-
edged.
Make sure this signal is
OFF before you request a
command.
Note:
• The execution of
commands or other
processing received
through any other
protocol cannot be
detected.
(Example: This signal
remains OFF during
Busy Signal measurements for a
parallel communications
STEP signal.)
If you use more than one
protocol and need to
detect command
execution, use the
parallel communications
BUSY signal.
• Just because this signal
is ON does not
necessarily mean that a
command is being
executed. To check
whether a command is
being executed, access
the Command
Completion (FLG) signal.
The FH/FZ5 uses this sig-
Command Com- nal to tell the user (PLC)
pletion Signal that command execution
has been completed.
ON/OFF timing
OFF to ON
The FH/FZ5 turns ON the
signal when it receives a The signal turns OFF
command from the user when the user (PLC)
(PLC). (The signal turns turns OFF the Command
ON after the EXE signal Request (EXE) signal.
turns ON.)
The signal turns ON The signal turns OFF
when the FH/FZ5 com- when the user (PLC)
pletes execution of a turns OFF the Command
received command. Request (EXE) signal.
Vision System FH/FZ5 Series User's Manual
for Communications Settings (Z342)
ON to OFF