Omron V460-H Series Connection Manual page 33

9.2.2. Time Monitoring Function
This section describes the time monitoring function in the project file.
The monitoring time settings can be changed by using variables in the function block
ParameterSet.
● Time Monitoring Using Internal Timers of the Project File
Assuming that processing has the executing status and does not end due to an error, the
project file uses its internal timers to interrupted the processing (i.e., timeout). The timeout is
set to 15 s for each processing phase from open to close.
Time Monitoring Using Internal Timers of the Project File
Processing Monitoring description
Open
Time from start to end of open processing
processing
Send
Time from start to end of send processing
processing
Time from start to end of receive
processing
Receive
* If receive processing is repeated, the
processing
Time from start to end of close processing
* The software part checks that the TCP
Close
processing
● Time Monitoring Using the Built-in EtherNet/IP Port (Socket Service)
The built-in EtherNet/IP port has a time monitoring function for receive data that arrives in
segments, as a socket service. In receiving processing, it stores the TimeOut parameter of
the socket service instruction SktTCPRcv_instance to TrTime=UINT#3(300ms) (initial value).
The project file also sets the variable TrTime as the Receive Wait Time Monitoring Timer for
the next response receive wait time after completion of receiving a response. If the next
response from the code reader does not arrive within this time, it will be judged that the
receive processing has ended.
Note
For information on time monitoring using the socket service, refer to SktTCPRcv Instruction in
Section 2 Instruction Descriptions of the Machine Automation Controller NJ/NX-series
Instructions Reference Manual (Cat. No. W502).
● Resending and Time Monitoring Using the Built-in EtherNet/IP Port (TCP/IP)
If a communications error occurs, TCP/IP automatically resends the data and monitors the
processing time if there is no problem with the built-in EtherNet/IP port. If processing ends
with an error in the middle of it, the project file stops the resending and time monitoring via
TCP/IP in close processing. However, if the close processing shows a TCP connection
status error, the resending and time monitoring via TCP/IP may continue to be active in the
built-in EtherNet/IP port. Refer to 9.6.2. TCP Connection Status Error Situation and
Correction for information on the error situation and correction.
software part monitors the time for each
repetition of receive processing.
connection status is normal after close
processing to judge the end of the
processing.
9. Project File
Variable Timeout
name (default)
After 15 s
TopenTime
(UINT#1500)
After 15 s
TfsTime
(UINT#1500)
After 15 s
TfrTime
(UINT#1500)
After 15 s
TcloseTime
(UINT#1500)
30