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rs232 enable/disable transmit

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I am using BL4S200. I am developing a customized rs232 protocol. I am wondering whether I can develop master/slave rs232 serial communication, like rs485. It has 2 functions (ser485Tx and ser485Rx). It is possible to realize the same features in Rs232? I mean enable/disable transmit.
asked Jun 22, 2015 in Rabbit Software by yang New to the Community (3 points)

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1 Answer

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There is no mechanism in RS232 to disable the line drivers unlike the 2 wire differential signalling of RS485 where you need to do this so that you can receive data. In RS232 the transmitter on one end is permanently connected to the receiver at the other end and vice versa so there is bidirectional connection in place and transmit does not need to be physically disabled. RS232 does not lend itself to single master, multiple slave setups.

answered Jun 22, 2015 by petermcs Veteran of the Digi Community (1,130 points)