Series 2000 Communications Handbook - Soliton
Series 2000 Communications Handbook - Soliton
Series 2000 Communications Handbook - Soliton
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<strong>Series</strong> <strong>2000</strong> <strong>Communications</strong> <strong>Handbook</strong>EI-Bisynch Protocol4.1.4. ASCII codesBefore a character is transmitted itis turned into an ASCII code. Thisis a universal code and a full list isincluded in Appendix B.The ASCII code is 7 bits and to thisthe start, parity and stop bits have tobe added as shown in the attacheddiagram. EI Bisynch protocolrequires even parity and a singlestop bit. This has to beprogrammed as part of the softwareconcerning the communicationsoutput port of the computer.OnecharacterStop bit (1, 1.5, or2 bitslong)Parity bit (odd, even orunused) Data bit 6 (MSB)Data bit 57 bitASCIIData bit 4Data bit 3Data bit 2Data bit 1Data bit 0 (LSB)Start bit1 01Return to idlestateorStart bit of newcharacter1,5 2Idle state of lineFigure 4-1: Asynchronous ASCII<strong>Series</strong> <strong>2000</strong> <strong>Communications</strong> <strong>Handbook</strong> Part No HA026230 Issue 2.0 Feb-00 4-3
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