DESIGNER’S HANDBOOK 4189350049C EN
Page 117 of 206
10.1.4.6
Dimmer PDO converter setup
This requires that a PDO converter is defined in the Product Profile (PP) as input source for each dimmer group
that must be supported by the selected PP. In most cases, a TPDO data value is defined for each of the 9 dimmer
groups.
Data can either be sent in a separate TPDO for each dimmer group or they can be mapped into one or two TPDOs.
The Dimmer TPDO converter can handle input values from 8 to 16 bytes mapped into a TPDO or RPDO.
One TPDO can max handle 8 dimmer groups each using 1 data byte. To support all 9 groups, at least two TPDOs
must be used.
PDO value at DIM level 0 %
defines the input value that must be converted to 0 %.
PDO value at DIM level 100 %
defines the input value that must be scaled to 100 %.
The PDO converter makes a linear scaling of the input value range received to the XDi dimmer range from 0 to 100
%.
Conversion mode:
the defined PDO can be received from CAN1, CAN2 or CAN1&2. If the conversion mode is
turned off, then the TPDO converter is disabled.
Be aware that the XDi can receive dimmer data sent in XDi-net format even when it is set up to receive dimmer
data in a TPDO or RPDO, but since dimmer data from a PDO is not retransmitted on the XDi-net, problems will not
occur.
Source TPDO/RPDO:
the default COBID of the TPDO or RPDO (0x1A0 in the example above), can be changed.
PDO data format:
unsigned/signed, in this case it should not be changed.
PDO data field length (8-16 bit):
the PDO converter can receive and convert any Unsigned or signed data
package between 8 and 16 bit and convert the content to a dimmer value between 0 to 100 %.
Mapped data, LSB located at bit no.:
this value indicates the location of the least significant bit in the data
package defined above and mapped into either a TPDO or RPDO. This makes the PDO converter able to identify
the mapped data package to use.
10.1.4.7
Synchronise dimmer group
Changes of dimmer parameters in the PDO converter may be shared with all other XDi indicators in the same
dimmer group. Accept synchronisation in the pop-up menu when leaving the setup menu.
Do not change any of the following advanced settings if you are not familiar with CANopen.
