User manual

Publication 1797-6.5.1 - April 1999
Calibrating Your Module 5-3
Typical MODULE Calibration Command Word
The controller sends a MODULE calibration command word over the
network, onto the flexbus and to the module.
Calibration Command Word
The I/O module may do a number of things based on the particular
calibration command data sent by the controller. The table below shows the
general structure of calibration commands.
The calibration command structure instructs the module to calibrate
individual channels or to calibrate all channels at once. If all channels are to
be calibrated at once, a single calibration command is sent along with
calibration command data selecting the calibration type to be accomplished.
If individual channels are to be calibrated, again, a single calibration
command is sent. The calibration command data specifies the specific
channel and calibration type to be accomplished.
General Calibration Command Structure
R/W Bit
1514131211109876543210
write cmd
flag
Calibration All Channels sub-Command 0-255
write cmd
flag
Calibration By Channel Channel Select 0-15 sub-Command 0-15
MODULE Calibration Command MODULE Calibration Command Data
Command Meaning Data (up
nibble)
Data (low
nibble)
Meaning
channel command
0 Commands Idle x x command method is idle
1 No Operation x x no operation is required
4 General Calibration by Channel 0-7 0 zero min and max scale coefficients
0-7 1-15 not used
8-15 0-15 not used
5 Min Scale Calibration by
Channel
0-7 0 input = 1mA
0-7 1-15 not used
8-15 0-15 not used