ASCII over RS232 with Dvframe

[c557438 (IgnasP)]

Hi,
I’m trying to read ASCII characters over RS232 using X20CP0482 and X20BB52, but I’m getting error 8079, which tells me that either the received character are defective or receive buffer is overflowing.
Interface parameters in Realterm and PLC are the same, which leads me to believe that I have a problem with buffer, which I’m not able to find.

Does anyone had such problem?

[alexander.hefner]

Hi,

at first I would check if the latest firmware of BB52 is used and update if not - I don’t think firmware is the reason, but nevertheless it always the first check to do out of my experience.

I’m not sure about, but it looks a bit like that the external device is sending the data cyclically, without needing a request to send from the receiver, am I right?
If yes, it would be interesting

• if the error code is already active after the first try of receiving data after open has finished? Or has there been other status before?
• how you’ve configured the frame ending sequence? So what’s set inside the xOpenConfig structure in your task? Especially the setup of the receive idle time and the frame ending characters?
• how often the message is sent by the sender, what’s the time between 2 data sets sent?
• what’s the cycle time of your task class where the receiving code is running?

Also I’m curious about the device itself, can you please tell us a bit more about?

Best regards!

[c557438 (IgnasP)]

Hi,
thanks for advice, I will check firmware.
Device sends data when I press “Print” button on it. I’m trying to connect table top scales used in lab.
Error code pops up after first time I press the button on scales. I also have description of message.

At the moment cycle time is 100ms, but I will test other times also.

[c557438 (IgnasP)]

Tested same example with X20CS1020, and it works, so it seams that I might have some problem with configuration on CPU