Preliminary User Manual UMAX023241 - Version: 1.1 17-63
Extra RPDO Messages
Objects 2500h
Extra Control Received PV
, 2502h
EC Decimal Digits PV
, 2502h
EC Scaling 1
PV
and
EC Scaling 2 PV
allow for additional data received on a CANopen ® RPDO to be mapped
independently to various function blocks as a control source. The scaling objects are provided to
define the limits of the data when it is used by another function block, as shown in Figure 7.
Constant Values
Object 5010h
Constant Field Value
is provided to give the user the option for a fixed value that can
be used by other function blocks. Sub-index 1 is fixed as FALSE (0) and sub-index 2 is always TRUE
(1). There are 13 other sub-indexes provided for user selectable values.
The constants are read as 32-bit real (float) data, so no decimal digit object is provided. When setting
up the constant, make sure to do it with the resolution of the object that will be compared with it.
The False/True constants are provided primarily to be used with the logic block. The variable
constants are also useful with the logic or math blocks.
Fault Detection Objects
Object 5040h
FD Field Value
is a read only object containing the field values of the over
temperature, over and under voltage. Object 5041h
FD Set Threshold
sets the limit values for which
the faults occur when reached. When any of these thresholds are reached, the faults will clear when
the values have lowered to values set in object 5042h
FD Clear Threshold.
For the AX023241 controller to begin monitoring fault detections, object 5050h
Error Check
Detection
determines which Fault Detection is enabled through 1 byte data as bits. Once a fault is
detected, object 5051h
Error Response Delay
will determine how long (in 100ms steps) the fault
needs to be present to flag and error.
Startup
The last object 5555h
Start in Operational
is provided as a ‘cheat’ when the unit is not intended to
work with a CANopen network (i.e. a stand-alone control) or is working on a network comprised
solely as slaves so the OPERATION command will never be received from a master. By default, this
object is disabled (FALSE).
When using the AX023241 as a stand-alone controller where 5555h is set to TRUE, it is
recommended to disable all TPDOs (set the Event Timer to zero) so that it does not run with a
continuous CAN error when not connected to a bus.
Besides Enable and Override signals controlling a particular output; another fault mode than can
occur is that of a Power Supply. Power Supply fault can be enabled to detect over voltage or under
voltage which will automatically disable ALL outputs. This setpoint is associated with the
Power
Supply Diag
function block. Also, if the
Over Temperature Diag
function block is enabled, then a
