Mitsubishi Electric MELSEC iQ-R Series User Manual page 92

When stopping using the project data saving function
The following shows the considerations when stopping using the project data saving function after using this function to save
project data.
■When a recording file is saved in an SD memory card
When reading a recording file in GX Works3, project data in an SD memory card is preferentially read at the same time. If
there is no project data in the SD memory card, it is read from a CPU module.
Therefore, when stopping using the project data saving function after using this function to save project data, it is
recommended to format an SD memory card.
■When a recording file is saved in a file server
If there is project data in the save destination for a recording file when playing the recording file saved in a file server, the
project data in the save destination is automatically opened and played on the offline monitor.
Therefore, when stopping using the project data saving function after using this function to save project data, it is
recommended to perform either of the following operations:
• Change the save destination for a recording file to a different one from the one specified when using the project data saving
function.
• Delete the PRJ folder
*1 For details on the save destinations for project data, refer to the following:
Page 81 Save destination
When changing module parameters
When changing module parameters and writing them to a CPU module if devices and labels used in the parameters are
specified as sampling targets, the recording setting must also be written to the CPU module.
When changing module parameters only and writing them to a CPU module, they cannot be reproduced properly on the
offline monitor.
Starting communication with a network camera
If a network camera is not started while the recording function is preparing to run, it takes time for the preparation.
It is recommended to start a network camera before switching a CPU module to RUN.
Note that even if it takes time to prepare to start the communication with a network camera, the recording function completes
preparation for other operations and starts running.
When using a camera event as a file saving trigger
Note the following:
Item
Occurrence frequency of a camera event in a network camera
Time lag between the detection of a camera event in a network camera and
the notification to a camera recorder module
1 FUNCTIONS
90
1.1 Recording Function
*1
in the save destination for a recording file.
Description
If a camera event occurs frequently in a network camera, the recording
performance is affected (mainly video data reception and accumulation).
For setting a network camera to detect camera events, note the following:
• A camera event must not be detected too frequently.
This time lag is caused because the network camera notifies the camera
recorder module of the detection via a network.
For setting the saving period, note the following:
• The saving period before trigger must be set so that the video when a
camera event occurs can be captured.