RS232 Input Module Configuration

[Hugusd]

Hello,

I want to decode a message from a blackbox but i don't know how to configure my RS232 Input module.

I copy the supplier informations about this message :

Channel Number	8
Total Length	6 bytes

Channel	Data1	Data2	Data3	Data4	Checksum

Lateral = Data1 And 0x7F + Data2 / 0x100
If (Data1 And 0x80)=0 Then Lateral = -Lateral

Longitudinal = Data3 And &H7F + Data4 / 0x100
If (Data3 And &H80)=0 Then Longitudinal = -Longitudinal

At the end i want to read Lateral and Longitudinal informations.

Can someone help me ?

Thanks a lot

Hugus

[CJ_Butler__DASYLab_Pro]

If one of the standard rS232 formats will not work, then read the 6 bytes as six channels, where the data format for each channel is b.

then, you can use the Bit arithmetic and bit mask modules, in combination with the Formula to do the math.

[Hugus]

Hello,

Thanks CJ !

My problem is that i have near 20 different messages, and the Message ID is written in the first Byte

So I have to read a Byte, compare it to my Message ID and after take x Bytes (not the same for all messages), verify the checksum to validate the message and then do my calcul on y bytes. Abd this for all my messages.

In ascii, i can configure the module to skip or find a special character but in Byte mode, no !

I test to read the bytes with my RS232 input module but how can i scan byte/byte to search my Message ID ?

Thanks to help me

Good day

Hugus