UMAX130511 Version 1.00A Preliminary Documentation
– May be subject to change
22 - 141
When (7100h AI Input FV < 7148h AI Span Start), an “Out of Range Low” flag is set. If the flag
stays active for the 2112h
AI Error Reaction Delay
time, an Input Overload Emergency (EMCY)
message will be added to object 1003h
Pre-Defined Error Field
. Similarly, when (7100h AI Input
FV > 7149h AI Span End), an “Out of Range High” flag is set and will create an EMCY message
should it stay active throughout the delay period. In either case, the application will react to the
EMCY message as defined by object 1029h
Error Behavior
at the sub-index corresponding to an
Input Fault. Refer to section 2.2.4 and 2.2.13 for more information about objects 1003h and 1029h.
Once the fault has been detected, the associate flag will be cleared only once the input comes
back into range. Object 2111h
AI
Error Clear Hysteresis
is used here so that the error flag will not
be set/cleared continuously while the AI Input FV hovers around the AI Span Start/End value.
To clear an “Out of Range Low” flag, AI Input FV >= (AI Span Start + AI Error Clear Hysteresis)
To clear an “Out of Range High” flag, AI Input FV <= (AI Span End - AI Error Clear Hysteresis)
Both flags cannot be active at once. Setting either one of these flags automatically clears the other.
1.3.
Digital Output Function Block
The digital output (DO) function block only becomes applicable on the output when object 6310h,
AO Output Type
, is set to a digital output type (Output type = 1000 or 1020).
Figure 9
– Digital Output Objects
Several of the objects shown in the above diagram are in fact associated with the Analog Output
function block, and are explained in detail in Section 1.4. Therefore, this section will only elaborate
on the objects unique to the DO function block.
An output can be controlled either by an on-board control signal (such the result from a lookup
table or a math function) or a CANopen object that has been mapped to an RPDO. In the case of