bannerbar

Support > Technical Support

Q&A

Your information is protected by SSL.

No. 1909	Re: AVP for Tech Services	2023-10-16

Dear Thomas Carter, Thank you for your inquiry. We would like to clarify the issue. If we understand it correctly, the working scenario is as follows: Serial device #1 <- Serial (RS485) -> CSE-H55N2 #1 <- Network (UDP) -> CSE-H55N2 #2 <- Serial (RS485) -> Serial device #2 Even if RS-485 works in one direction, it does not guarantee that it will work in the other direction, as electrical noise may disrupt the data. You may follow this guide to reduce noise in the RS-485 connection: https://www.eztcp.com/en/support/view?page=1&cid=417 Additionally, there could be an issue with your serial devices. For further analysis, could you please use ezManager to troubleshoot the issue? When testing data transmission using the CSE-H55N2 units, please connect your CSE-H55N2 units to ezManager, and open the Status window. Then, please take screenshots for us. You can also send us via email at support@eztcp.com This will allow us to see the number of data received/sent via the serial port and network of your CSE-H55N2 units. For more information, please refer to pages 53 and 54 of the ezManager Manual: https://www.eztcp.com/en/download/pds_files/an_ezmanager_en.pdf If possible, please try using the Simple Test to verify the issue on each CSE-H55N2 device. You can connect your CSE-H55N2 to the Simple Test Program via both the serial and network connections. For the serial connection, you may use a USB-RS485 adapter to connect the CSE-H55N2 to your PC. For more information about the Simple Test program, please refer to page 37 of the ezManager Manual. Thank you for your understanding. Best Regards > Thomas Carter wrote: > ------------------------------------ > We have 2 CSE-H55N2 converters for transmitting RS-485 over the network, for example A & B. Both are configured in U2S-UDP mode with the other listed as a peer. When testing the communication, data will only work in 1 direction - data transmitted by RS-485 connected to A is received correctly by RS-485 on B. However, data transmitted by RS-485 connected to B is not received by A and the RXD light on A never flashes. Since it is RS-485, if it wasn't connected correctly, neither direction would work (send or receive). Since it is working in one direction, it seems like it should work in the other direction.

Writer	Sollae Systems	Company