Hex-Code through RS-232

Hi, i made a simulink model to run a few LED's. I know that the module to which the RS-232 is connected Needs for example the Hexcode 'CA00056734DS' to make all LED's light red.

First Thing i did, was reshaping the Hexcode in a Vector: [ CA 00 05 67 34 DS] because more than that can't be send in uint8 without a data Overflow.

Then i created a Counter to read out the vector-elements and send them through the Serial device after converting them into uint8.

These Vector-elements i connected with the TX-Bytes Input and to the NumBytes-input i give the in the example above the number 6 in uint 32 because 6 elements will be send through the device.

But somehow this doesn't work correctly.

Has anyone an idea where my mistake is?

Thanks a lot!

Greetings

[Suneesh]

1. What library is the Serial transmit block from?
2. Devices usually require a header/terminator. Have you set this up correctly for your device?