Our company is engaged in the development and production of the security system. The system includes a management center machine and has a specialized software for management center control. The program is developed and called Access desktop database with VB 6.0, and the hardware connection is converted with 485/232 conversion. The joint connects the COM port of the PC. The program implements the monitoring and switch between the entrance of the building and the image between the building, but sometimes a dialog prompt will pop up in the process of running:
Multiple-Step Ole DB OperationGenerated Errors. Check Each Ole DB Status Value, IF Available. No Work Was Done
When you press "OK", the other dialog is bounced is "Runtime Error 5, invalid process calls or parameters", and then press "OK" key master program to exit.
This situation did not appear in other properties we did, I would like to ask if the power supply causes the incorrection of COM port operating voltage unstable? No one has met the situation.
