FUNCTION CODE DEFINITIONS
ENHANCED CALIBRATION COMMAND FUNCTION CODE (FC 217)
I-E96-301B
C - 9
Table
gives approximate typical channel A/D conversion
rates for each channel. These rates will vary from scan to scan.
This time can be used to determine an approximate slave scan
rate.
For example, if the IMASI03 has six channel configured with:
2 channels configured at 16 bits
2 channels configured at 20 bits
1 channel configured at 22 bits
1 channel configured at 24 bits
An approximate slave scan time can be found by adding the A/
D conversion times beside the resolution values in Table C-8.
2 at 30 ms
2 at 175 ms
1 at 450 ms
1 at 2000 ms
The approximate scan rate total is 2.655 seconds for 6
channels.
ENHANCED CALIBRATION COMMAND FUNCTION CODE (FC 217)
This function code is used to calibrate the IMASI03 Slave Input
Module.
The operator initiates, guides, and terminates a calibration
sequence with this enhanced calibration command function
code. Commands are entered by tuning this block. The status
of the command may be determined by examining S1 after the
TUNE operation is completed.
This specification will be set to indicate if any errors occurred
during the processing of the command. A detailed description
of any command errors is provided as an output (N + 4) to this
function block. This output will reflect the status of the most
recently issued calibration command.
Table C-8. FC 216 Resolution and Scan Time
Resolution
(Bits of A/D)
Resolution
(Percent of A/D Span)
Typical A/D Conversion
Times Per Channel
16
0.0015
30 ms
18
0.00038
175 ms
20
0.000095
175 ms
22
0.000024
450 ms
24
0.000006
2000 ms
