Mitsubishi Electric MELSEC iQ-R Series User Manual page 241

Camera event reception
Camera events detected by a network camera can be received in a camera recorder module.
To receive camera events, the camera event setting is required.
The camera event setting can be configured in the "Camera Individual Settings" screen in the module extended parameter.
(Page 105 Camera individual setting)
The following type of camera event can be received from a network camera.
Camera event type
Motion detection
The camera event receiving status of a network camera can be monitored for each recording setting in 'Camera event
receiving status' (Un\G1593 to Un\G1596). (Page 271 Recording status area (Un\G1500 to 3199))
Note that there is a period during which camera event reception is disabled.
Whether a file saving trigger is satisfied by camera event reception is determined for each unit of END processing in
sequence scans of a CPU module while the recording function is running.
Therefore, if multiple camera events are received before the END processing, the second and subsequent ones are invalid.
The numbers of camera events and invalid camera events received can be monitored for each recording setting.
Check the numbers in 'Number of camera events receiving' (Un\G1601 to Un\G1604) and 'Number of invalid camera events
receiving' (Un\G1609 to Un\G1612). (Page 271 Recording status area (Un\G1500 to 3199))
Precautions
There is a limit to the number of events detected by a network camera (example: the destination for motion detection), and its
total number depends on the network camera.
If the upper limit is reached for a network camera, a camera event can no longer be received from the network camera.
In this case, a network camera communication error (camera event) (error code: 1E73H) occurs.
Description
Videos are compared in a network camera, and a camera event is reported if there is any change.
7 CAMERA RECORDER MODULE (DETAILED SPECIFICATIONS)
239
7.1 Function Details
7