Here's the situation:

I have a constant size data packet (10 bytes).

In the ASCII query parser, I've selected to split packets by sign
characters.  My first two bytes of every packet are #00 #00, and
my last two bytes of every packet are #11 #11.  I've also selected
"the control length of the data packet" to be 10.

I'm finding, however, that if my byte #8 is also a #11, that the packet
is truncated one byte short.  My packet #8 can be anything from #00 to #FF,
so I don't know what else to try.

Why isn't the control length working?

Thanks! (Registered owner!)

-mark tanner

Could you provide an example of how to do this? I'm also having trouble converting
hex bytes.  Thanks!

Quote from: Arthur Grasin on March 18, 2009, 12:49:00 PM
Your PLC sends data in the binary format. In this case you should

1. Extract your bytes to a string parser item (with help of the ASCII data parser plug-in)
2. Use the "Expressions" filter plug-in and convert the string parser item to a decimal number. Please, read the help file for this plug-in about corresponding functions.