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No. 1522	Re: Re: CSW-H85K cannot connect by AT command mode	2017-09-20

Hi, thank you for your feedback, please refer to my answers below... To connect two CSW-H85K units in AT command mode, you could refer to page 13 and 14 in AT Command Mode - Application Note: http://www.eztcp.com/en/download/pds_files/an_atc_mode_en.pdf Answer: Yes, I have already downloaded this manual and read several times For example, on device #1 (TCP Server), the AT command procedure can be as below: >at+plip=YOUR_TCP_SERVER_IP >at+plp=YOUR_TCP_SERVER_LISTENING_PORT >ata Answer: my device #1 has an IP address 192.168.178.43 and I read the following settings at+plip?=192.168.178.43 at+plp?=1470 The ata command results in a No Carrier message On device #2 (TCP Client), you may input command as below: >at+prip=YOUR_TCP_SERVER_IP >at+prp=YOUR_TCP_SERVER_LISTENING_PORT >atd Answer: my device #2 has an IP address 192.168.178.42 and I read the following settings at+prip?=192.168.178.43 at+prp?=1470 The atd command results in a No Carrier message I have entered the command at+pwp on both devices Both devices are brand new and have firmware V2.4A When I configure the devices as TCP Client and TCP Server, they connect successfully. So I assume my network (firewall) causes no difficulties. However, when both devices are in ATC command mode they do not connect. What else can I do to solve this issue ? Best regards, Hans Adams > Sollae Systems wrote: > ------------------------------------ > Dear Hans Adams, > > Thank you for using our product. > > To connect two CSW-H85K units in AT command mode, you could refer to page 13 and 14 in AT Command Mode - Application Note: > http://www.eztcp.com/en/download/pds_files/an_atc_mode_en.pdf > > For example, on device #1 (TCP Server), the AT command procedure can be as below: > >at+plip=YOUR_TCP_SERVER_IP > >at+plp=YOUR_TCP_SERVER_LISTENING_PORT > >ata > > After you enter "ata", this unit (TCP Server) will start listening to TCP connection request. Note that, on command line, there will be no response message (you should avoid entering "ata" command more than one time). Next, you can setting configuration for client device. On device #2 (TCP Client), you may input command as below: > >at+prip=YOUR_TCP_SERVER_IP > >at+prp=YOUR_TCP_SERVER_LISTENING_PORT > >atd > > Here, if the TCP connection is established successfully, the "CONNECT" message will be displayed on command screen of both devices. > Note that after using AT command to config IP and port on devices, you should use command "at+pwp" to save those setting values to products, so that the setting will be saved even after reset (refer to page 4 in AT Command Mode - Application Note). > > And also, it could be better if you can make sure that you are using latest firmware for CSW-H85K. You may find the latest firmware, v2.4, at the link below: > http://www.eztcp.com/en/download/pds_view.php?bbs_id=15&page=1&cid=280 > > If there is still any problem, please feel free to contact us. > > Thanks and Best regards, > > > > Hans Adams wrote: > > ------------------------------------ > > Hi, i have a problem connecting two CSW-H85K units to each other. > > Both set in AT command mode and both are well connected to my network in infrastructure mode. > > When i try to connect one CSW-H85K to the other one with the ATD command i got only a message "No Carrier". > > As soon i configure the units as TCP client and server, it works fine. So i assume that my network does not cause any difficulties. > > What can i do to connect the two CSW-H85K units in AT command mode ?

Writer	Hans Adams	Company