Tofu FAQ & Error Code List

1. Program operation error

No.	Check list	Yes/No
1	Pop up error “can not find VCOP***.DLL”，The basic Win related library is missing from the computer， Double click Install under the installation path. This library is usually included in computers, and if there are no errors, there is no need to install it again.

2. Device login failure, inability to search, upgrade failure, and abnormal offline issues

No.	Check list	Yes/No
1	If point-to-point direct connection, please check if the local IP is a fixed IP and if the network segment is consistent with the device
2	Check if the device is connected to the camera through Ping, keyboard Win+R, input cmd, Enter ping 192.168.1.200, modify to the actual IP address of the device, and confirm if the network link is correct
3	If there are multiple network cards in the device, is the network card corresponding to "Select Network Card" in the device search the same network segment
4	Is the local IP in the same network segment as the device IP, is the gateway correct, and the local IP address cannot be the same as the gateway address
5	Is there an IP conflict, that is, whether other devices in the same network segment have the same IP
6	Is the virtual machine network disabled? Virtual machines occupying the same network segment may cause devices to be unable to search
7	Check if the firewall is turned off
8	Some computers may have antivirus software intercepting upgrade packages, which requires uninstalling the antivirus software at this time

3. No video data (green or blue screen)

No.	Check list	Yes/No
1	Check the video source camera configuration for compression format H.264@25fps The video transmission protocol is RTSP (Tofu4 only supports H.265 format)
2	Check if the video streaming address is correct using VLC
3	Check if the camera streaming address, username, and password are correct Reference RTSP address format: rtsp://UserName:Password@ip:554/… If there are garbled characters, Chinese symbols, or spaces in the input streaming address, it will cause the streaming to fail Please consult the camera manufacturer for the actual video streaming address
4	Check if UDP communication is enabled on the local firewall, it is recommended to close the firewall
5	Is the camera and device in the same network segment without IP conflicts
6	Occasionally, if a green screen appears, please check the network cables, switches, network cameras, and other devices. This is caused by the inability to stably obtain videos. You can use the onvif device manager software Click“Application settings” ，open“Show video playback statistics”to see the framerate，If the decoding fps drops below 20 frames, it is usually caused by unstable network links or IP conflicts.

4. Abnormal system upgrade

No.	Check list	Yes/No
1	Check if there are Chinese characters, brackets, and other unsupported identifiers in the system upgrade file name
2	Check if the local firewall is turned off
3	Does the client start with administrator privileges
4	Disable virtual machine network, uninstall 360 antivirus software

5. Pan tilt control failure

No.	Check list	Yes/No
1	Check if the PTZ address code is correct, the default PTZ address is 01
2	Is the RS485 cable of the device loose and the wire sequence correct
3	Check if the baud rate of the pan tilt is 9600bps
4	Is there multiple devices occupying the PTZ bus at the same time, which will result in sending instructions that cannot be received

6. Lens zoom control failure

No.	Check list	Yes/No
1	Does the UART or RS232 level match between the zoom camera and the device
2	Is the RXD and TXD cross connected between the zoom camera and the device
3	Is the zoom camera interface protocol a standard VISCA protocol
4	Is the baud rate of the zoom camera interface 9600bps

7. Target not recognized

No.	Check list	Yes/No
1	Is the target recognition function enabled
2	Whether the target recognition type is enabled, open AI OSD in parameter settings to check if the opened recognition type corresponds to the model. For example, the drone recognition model only supports drone targets
3	The software limits a false alarm to 50% greater than the height/width of the screen
4	Is there an identification fence area? You can click on "Clear Fence" to delete all set areas

8. Target can’t tracking

No.	Check list	Yes/No
1	Is the recognition stable? Only after three consecutive frames of stable recognition can it switch to tracking
2	Identify whether the target is on the screen boundary, and if it is too close to or beyond the screen boundary, the target will not switch to tracking

9. Video stuck

No.	Check list	Yes/No
1	Check if the output frame rate of the camera is 25Hz. If the frame rate is too low, it may cause the device to stall in streaming
2	Check if the network is stable and if the bandwidth of the switching board is sufficient, and verify using the method in 2.6

Error Code List

The multi-device version client software will show the log information. If an error code is reported, this table can be queried.

Code	Description	Note
255	Unknown error	Device repeated login or network link issues
0	Success
1	Incomplete package
2	CRC error
3	Server busy
4	Execution error
5	Incorrect username or password
6	Insufficient permissions
7	parameter error
8	Exit Exception
9	Heartbeat interruption
10	System upgrade failed
11	Out of memory
12	Unsupported features
13	Existed
14	Not present
15	User repeated login
16	Not Logged In
17	Started
18	Ended
19	Not connected
20	Failed to start thread
21	End thread failed
22	Callback not set
23	Network anomaly
25	Timeout
47	Incorrect file format
51	Upgrade file format error