MODBUS RTU how to skip error read

Hi,

i have problem, how to skip when the communication error if i use Modbus Library ? i wanna this measurement smoothly without any errors on the chart.

watch this video i record my problem:

https://drive.google.com/file/d/0B_94Z4CwsTYeWEJpZUx2cVJ0a2c/edit?usp=sharing

i tried to mod on MB Serial Master Query Read Input Register.vi by using Case Structure on Error. see that video and still didnt work. any suggestion ?

Thanks~