Fuse Status

Returns the status of the fuse on the Q8 terminal board.

Library

qctools

Description

The Fuse Status block for the Q8 series of I/O cards provides a mechanism for checking the status of the fuse on the Q8 terminal board. The block queries the FUSE bit of the Status Register each sampling instant. Note that unlike the Interrupt Status Register, the status flags are not latched. The Status series of blocks may be used in Windows regardless of the status of the Q8 Windows driver.

Block Outputs

FUSE

The output reflects the status of the fuse on the Q8 terminal board. If the fuse has blown or degraded such that the +5V power on the terminal board falls below 4V then this status flag is high. If the fuse is working properly, the this flag is low. Note that the fuse also acts as a hard watchdog. Failure of the fuse causes all analog outputs to be zeroed and all digital lines to be pulled high.

Parameters and Dialog Box

Board Number

The board number of the I/O card. If there is only one Q8 board in your system, then the board number should be zero. The second Q8 board in your system is board number 1, etc.

Sample Time

A sample time must be specified for all discrete blocks. The default value extracts the sample time from the RTW Options dialog, under Solver/Fixed step size. A numeric value rather than 'auto' should be specified in this dialog field for this default to make sense.