Dear All,
I am communicating a device on modbus protocol.
i have kept it under observation for 2-3 days.
I am able to communicate it properly til then, but after that 2-3 days time out error comes.
Setup is as follows:
i have connected the labview program on COM5, have used a virtual com port pair software to transfer its data to other port(name is com0com) say on com4.
now this com 4 is connected to the instrument, and also i can observe the number of bytes transmitted and received with the slave.
Till 2-3 days the bytes are transfered and received also, but after that the transmitted bytes doesnt increase, so i debugged in the modbus library of labview,
In MB Serial Transmit vi bytes are also written on the port as the return count (8) is given on visa write vi .
then also the counter for transmitted bytes doesnt increase.
I am not able trace where the exact problem is,
any suggestions..
Regards,
Shrek