I had earlier posted a thread regarding pc to plc comm. I know that using the plc df1 protocol for an allen bradley micrologix 1500 allows one to manipulate or read data in the N9 integer user created file.
The comm. code based on df1 Protocol is written in VB. all the DLE And checksum errors have been gone thru more than thrice. Yet when i am reading the data of N9:0 and N9:1 into my PC from the Plc , I get an overflow after reading for a few seconds.
HAs anybody encountered this problem before. Please , i need to sort it out by tommorrow otherwise i am in for it.
The comm. code based on df1 Protocol is written in VB. all the DLE And checksum errors have been gone thru more than thrice. Yet when i am reading the data of N9:0 and N9:1 into my PC from the Plc , I get an overflow after reading for a few seconds.
HAs anybody encountered this problem before. Please , i need to sort it out by tommorrow otherwise i am in for it.