10
Float Cal High 01
The Cal High 01 is a floating-point voltage equal to 9.0 volts (±0.09V). It is derived from a fixed
calibration voltage source on the card. This input can be used to test the card’s calibration and
performance. NetArrays assigns a Tag to this input when the card is added to the I/O
configuration. Reassign this Tag as required to access this calibration voltage in the project
program.
Float Cal High 02
The Cal High 02 is a floating-point voltage equal to 9.0 volts (±0.09V). It is derived from a fixed
calibration voltage source on the card. This input can be used to test the card’s calibration and
performance. NetArrays assigns a Tag to this input when the card is added to the I/O
configuration. Reassign this Tag as required to access this calibration voltage in the project
program.
Integer Error Detection
The Error Detection input is an Int Variable that can be used to detect an I/O card failure.
NetArrays assigns a default Tag to this variable when the card is added to the I/O configuration.
A Card Timeout Error (Bit 0) will set the Error Latch bit (Bit14), which will remain set until this bit is
cleared to zero by an operator. While the Error Latch is set, the card will be offline and the target
node will not attempt to communicate with it. Note that most cards do not use all the status bits
shown. Any unused bits will always equal zero.
Bit 14 Card Error Latch
This status bit indicates that a Card Timeout Error occurred on the I/O card, and that it
has been taken offline. The card will not be initialized or placed online until this bit is
cleared in the project program or operator intervention.
If this bit is set, it must be cleared to return the card to operation. The correct way to
clear this bit is to select the card’s icon in the I/O configuration Form while NetArrays is
operating in Debug mode and answer “Yes” to the Enable prompt. See I/O Card Status
and Control. (It is also possible to change the value of this variable by forcing an Integer
Bit Variable object, with Bit 14 selected in the object's properties, to zero. Do not clear
the entire Error Detection Integer Variable to zero.)
Bit 10 Fault Test Error
PLD calibration errors are annunciated through this bit.
Bit 9 Backplane Bus Data Error
This status bit indicates that a data error was detected in a data or command transfer to
or from an I/O card.
Bit 8 Data Invalid
This status bit indicates that the I/O card is not ready to send valid data.
Bit 7 Card ID Does Not Match I/O Configuration
This bit indicates that the ID code read from the I/O card does not match the card type
specified in the NetArrays I/O configuration.
Bit 6 Card Specific Error
This bit indicates a PLD hardware timeout error for digital input card.
Bit 3 Cal High
