Mitsubishi Electric Melsec Q Series User Manual page 142

6
FUNCTIONS
(2) No. of times data can be stored in the trigger buffer
(3) Clearing the trigger buffer
6
- 9 6.1 DB Interface Function
6.1.5 Trigger buffering function
(1) For job operations performed when [Trigger buffering] is disabled, refer to the
following:
Section 6.1.11 (1) Operation behavior of jobs
(2) Whether a trigger condition changed from false to true or not is determined at
the time of sampling.
Section 7.10.2 (6) Value monitoring startup
(3) When the trigger condition of the job, for which the DB buffering function is
disabled, is satisfied in the state where a communication error occurs
between a MES interface module and a server computer, the processing time
of the action may be longer because a connection timeout occurs after the
connection timeout time (default : 10 seconds) has elapsed.
In the case when the connection timeout time is longer than the trigger
interval, trigger buffering may be performed with the operation described in
"(b) In the case of load concentration (Trigger interval < Processing time for
action)".
(a) The trigger buffering function allows up to 128 pieces of trigger information (tag
data, time) to be stored concurrently.
Note that there are no restrictions on the number of bufferings per job.
(b) No. of trigger buffer data can be confirmed by the following:
• No. of trigger buffer data (Buffer memory address: 11511)
• [Online] - [Remote operation] (
(c) Since the trigger satisfied when the number of trigger bufferings is reached to 128
is discarded, the job is not performed.
The number of times the trigger buffer data are discarded can be confirmed in the
Trigger buffer overflow count area (Buffer memory address: 11512).
The following clears the contents of the trigger buffer.
• [Update settings] (
• Stop of the MES interface function operation by [MES interface function
configuration tool] - [Online] - [Remote operation]
( Section 7.13.2 Manipulating the operation status of the MES interface
function)
• Turning the programmable controller power OFF and ON
• Resetting the programmable controller CPU
Section 7.13 Online - Remote operation)
Section 7.13.2 (3) Update settings)