I/O Signals - Omron FH series User Manual

I/O Signals

The following tables describes the signals that are used to control I/O for PLC Link communications.
Input Signals
Signal Signal name
Command
EXE
Request Signal
DSA (Used only
Data Output
for handshaking
Request Signal
output control.)
Flow Command
XEXE
Request Bit
*1: A timeout error will occur and the Command Completion (FLG) signal and BUSY signal will be forced OFF if the EXE signal
does not turn OFF within the time that is set in the PLC Link settings ([Retry interval] for Ethernet PLC Link and RS-232C/422
PLC Link) after the Command Completion (FLG) signal turns ON.
*2: A timeout error will occur and measurement data readied for output will be discarded if the DSA signal does not turn OFF within
the time that is set in the PLC Link settings ([Retry interval] for Ethernet PLC Link and RS-232C/422 PLC Link) after the Result
Completion (GATE) signal turns ON.
Vision System FH/FZ5 Series User's Manual
for Communications Settings (Z342)
Function
Turn ON this signal (from
the PLC) to send a com-
mand to the Sensor Con-
troller.
This signal is to request to
externally output that mea-
surement data from the
flow which was executed by
the PLC at handshake time.
If this signal is ON when an
Output Unit (Data Output
Unit) in the measurement
flow is executed, the Sen-
sor Controller will output
the data from the process-
ing item.
Turn ON this signal to exe-
cute a command during
execution of PLC Link flow
control.
ON/OFF timing
OFF to ON
Turn ON the signal (from
the PLC) to send a com- Turn OFF the signal from
mand to the Sensor Con- the PLC when the Sensor
troller and request Controller turns ON the
execution based on the Command Completion
command code and com- (FLG) signal.
mand parameters.
• Turn ON the signal
(from the PLC) when
you wish to output the
data externally.
• Turn ON the DSA
signal at the same time
as the Trigger (STEP) Turn OFF the signal from
and Command the PLC when the Sensor
Request (EXE) signals. Controller turns ON the
If more than one Output Result Completion
Unit is used to output (GATE) signal.
data, turn ON the DSA
signal again after the
GATE signals turns
OFF.
Reference: Time
Charts (p.207)
Turn ON the signal to
Turn OFF the signal when
request execution of a
the Flow Command Com-
command that was input
pletion (XFLG) signal
during execution of the
turns ON.
PLC Link flow control.
Communicating with PLC Link
ON to OFF
2
*1
*2
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