Version 3.0.0 Preliminary Documentation – May be Subject to Change 39-46
3.4.
FAULT DETECTION FUNCTION BLOCK (AXIOMATIC)
The manufacturer objects supported by the 18 Digital Input for the fault detection block are listed in
the following table.
Index
(hex)
Object
Object Type
Data Type
Access
PDO
Mapping
4000
FD Field Value
ARRAY
UNSIGNED16
RW
Yes
4001
FD Set Threshold
ARRAY
UNSIGNED16
RW
No
4002
FD Clear Threshold
ARRAY
UNSIGNED16
RW
No
400A
FD Enable Error Checking 8 Faults
ARRAY
UNSIGNED8
RW
No
400B
FD Error Response Delay
ARRAY
UNSIGNED16
RW
No
3.4.1. Object 4000h: FD Field Value
This object reflects the measured value for the faults Over Temperature (FD 1), Over
Voltage (FD 2) and Under Voltage (FD 3).
In all three cases, the measured value is
multiplied by 10 before being written to object 4000h
, in order to give one decimal place
resolution. Temperature is read in degrees Celsius times 10 [ºC x 10], and Over and Under
Voltages are in Volts times 10 [V x 10]. Note, the Over and Under Voltage FV will always
have the same value, since they are both triggered by the power supply voltage to the 18
Digital Input module.
Object Description
Index 4000h
Name
FD Field Value
Object Type
ARRAY
Data Type
INTEGER16
Entry Description
Subindex 0h
Description
Number of entries
Access RO
PDO Mapping
No
Value Range
3
Default Value
3
Subindex 1h
Description
Over Temperature Field Value
Access RO
PDO Mapping
Yes
Value Range
0 to 1250
[ºC x 10]
Default Value
No
Subindex 2h
Description
Over Voltage Field Value
Access RO
PDO Mapping
Yes
Value Range
0 to 1000
[V x 10]
Default Value
No
