PIC 16F877 with 3 serial ports

**namqn** · 09-07-2007, 07:17 PM

If the equipments use RS-232, then the only way to talk to them is via RS-232. That's fine. Your problem can be solved in different ways, depending on the data rate you need.

The baud rate is your communication speed, not the data rate. The data rate is how frequent you want your data. If your data rate is low, like 10 samples/second, then you probably can use some multiplexer to connect the equipments and the host PC to the PIC one-by-one.

If the data rate is high and/or control action is fast, then you probably need a couple of PICs connected together. They can talk to each other via different protocols.

Cheers,

09-07-2007, 07:17 PM	#5
namqn Trưởng lão PIC bang Tham gia ngày: Feb 2006 Nơi Cư Ngụ: Tp. HCM, Việt Nam Bài gửi: 3,025 :	If the equipments use RS-232, then the only way to talk to them is via RS-232. That's fine. Your problem can be solved in different ways, depending on the data rate you need. The baud rate is your communication speed, not the data rate. The data rate is how frequent you want your data. If your data rate is low, like 10 samples/second, then you probably can use some multiplexer to connect the equipments and the host PC to the PIC one-by-one. If the data rate is high and/or control action is fast, then you probably need a couple of PICs connected together. They can talk to each other via different protocols. Cheers, __________________ Biển học mênh mông, sức người có hạn. Đang gặp vấn đề cần được giúp đỡ? Hãy dành ra vài phút đọc luồng sau: http://www.picvietnam.com/forum/showthread.php?t=1263 thay đổi nội dung bởi: namqn, 09-07-2007 lúc 11:28 PM.