ACOEM Met One Instruments GAS-1060, User Manual

Page: 142 / 164

Serinus 60 User Manual 3.0
Page 142
Table 15 – Example: Primary Gas Response
Byte Number 1 2 3 4 5 6 Continued in
next table.
Description STX ID Command ETX Message
Length Primary Gas
Conc
Value 2 0 1 3 5 50
Checksum
Calculation 0 0

1=1 1

5=4 4

50=54
Table 16 – Example: Primary Gas Response (continued)
Byte Number 7 8 9 10 11 12
Description IEEE representation of 1.00 Checksum EOT
Value 63 128 0 0 50 4
Checksum
Calculation
54

63=9 9

128=137 137

0=137 137

0=137
137
A.2 Commands
A.2.1 Communication Error
Where:
Command byte 0
Message byte 1 0
Message byte 2 0..7
If the command byte of a response is 0, this indicates an error has occurred. The message field will be
2 bytes long, where the 2
nd
byte indicates the error according to the following table.
Table 17 – List of Errors
Error # Description
0 Bad Checksum received
1 Invalid Parameter Length
2 Invalid Parameter
3 Internal Data Flash Erase in Progress unable to return data for a few seconds
4 Unsupported Command.
5 Another process is collecting data – unable to service request.
6 MemStick No Connected
7 MemStick Busy