ACOEM Met One Instruments GAS-1060, User Manual

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Parts List Page 143
A.2.2 Get IEEE Value
Where:
Command byte 1
Message byte 1 Index from List of Parameters
Message byte 2..32 Additional indexes (optional)
This command requests the value of an instrument parameter. The message field byte contains the
index of the parameter requested, as described in the List of Parameters.
Up to 32 indexes can be supplied in a single request. The response has 5 bytes for each parameter
requested – the first byte is the parameter index and the next four are the IEEE representation of the
current value.
Example
A request with a message field of 50,51,52 to a Serinus S40 would return a 15 byte message as
shown below:
Table 18 – Example: Get IEEE Response data
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
50 NO reading 51 NOx reading 52 NO2 reading
A.2.3 Set Calibration Mode
Where:
Command byte 4
Message byte 1 85
Message byte 2-5 The IEEE representation of 0, 1, 2, or 3
0 puts the instrument into Measure mode (0,0,0,0)
1 puts the instrument into Cycle mode (63,128,0,0)
2 puts the instrument into Zero mode (64,0,0,0)
3 puts the instrument into Span mode (64,64,0,0)
This command puts the instrument into a calibration mode (the same as going to the Calibration
menu and choosing a Cal. Mode).
Example
A request with a command of 4 and a message field of 85,64,64,0,0 would place the instrument into
Span mode.