Welch-allyn LC101 CO2 Module - User Manual Manual de usuario descargar pdf (Pagina 34)

LC101 CO

Module OEM Implementation Manual

Page 34 Conﬁdential Welch Allyn OEM Technologies

Status Responses

Status responses are data packets that communicate Module, sensor and system status. The

status response also serves as an acknowledgement for mode commands.

Status response packet format:

< STX 02h

X identiﬁer 1*(ASCII)

xx mode 2*(ASCII)

yy message 2*(ASCII)

zz CCITT/CRC code 2*(ASCII)

> ETX 03h

NOTE: To simplify the Module status response examples that follow, the CRC data (zz) is

assumed to be included with the ETX character (>).

Status Response Mode Byte

The format of the Mode byte is as follows:

<Sxxyy> where S = Identiﬁer

(1 byte = 1 ASCII character)

xx = Mode

(2 Hex digits = 2 ASCII characters)

yy = Status message

(2 Hex digits = 2 ASCII characters)

Status Response Mode Byte - Format Summary

*Bits 5 and 6 will always be set to 1; Bit 7 will always be set to 0.

**Bits 3 and 4 are always zero as there are only 4 modes (values 0, 2, and 6 to 31 are undeﬁned).

bit 7* bit 6* bit 5* bit 4** bit 3** bit 2 bit 1 bit 0

Status

Response xx

Mode

8 4 2 1 8 4 2 1

<S61yy> Standby 0 1 1 0 0 0 0 1

<S63yy> Measurement 0 1 1 0 0 0 1 1

<S64yy> Autorun 0 1 1 0 0 1 0 0

<S65yy> Fault 0 1 1 0 0 1 0 1

1 2 ... 29 30 31 32 33 34 35 36 37 38 39 ... 97 98

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Welch-allyn LC101 CO2 Module - User Manual Manual de usuario Pagina 34