RS‑485 half-duplex mode

In RS-485 half-duplex mode, the SDM‑SIO2R will wait for approximately 2.5 ms after a character is received before it tries to transmit any data in its transmit buffer. This is to ensure that a contention does not occur on the data line which will cause data corruption. There is also a delay of at least the time to send one character after the last character has been transmitted before the SDM‑SIO2R will listen for new incoming data.