National Instruments NI-FBUS - Manual (Page 77)

Chapter 4 Parameters
NI-FBUS Configurator User Manual 4-12 ni.com
BKCAL_OUT (Process)
A back-calculation value published to the BKCAL_IN of an upstream block
in a control loop. The BKCAL_OUT parameter has the value of the block’s
current output. Before a cascade loop is initialized, the upstream block can
use this value to smoothly transfer to loop control.
BKCAL_OUT_D (Process)
An output value published to an upstream discrete block. The upstream
block can use this value to smoothly transfer to loop control.
BLOCK_ALM (Alarming, Diagnostic)
An alarm parameter used to report error conditions detected within the
block, such as block Out of Service.
BLOCK_ERR (Diagnostic)
A list of error conditions for hardware and software components associated
with the block.
Table 4-10. Error Codes
Error Code Code Description
Other 0x0001 Undefined block error condition.
Block Configuration Error 0x0002 The block has detected an error in its
configuration. This usually indicates a
static parameter has been left uninitialized.
Link Configuration Error 0x0004 The logical connection between this block
and another block is misconfigured.
Simulate Active 0x0008 For I/O function blocks, this indicates that
simulation is enabled. For the resource
block, this indicates that the simulate
jumper has been set, allowing simulation to
be enabled in other blocks.
Local Override 0x0010 The block has locally overridden the output
value. This can be the result of an interlock
or faultstate.
Device Faultstate Set 0x0020 The block faultstate behavior is active.