DESIGNER’S HANDBOOK 4189350049C EN
Page 116 of 206
The dimmer error level
: this is the dimmer level used if the dimmer voltage drops more than 2% outside the
defined dimmer low level. When this level is set to 50 %, the backlight will shift to 50 % in a fault situation,
Raw data filter:
is an averaging filter that can be adjusted to reduce noise and fast fluctuations on the input
voltage. This filter is useful to reduce flicker when a PWM signal with external LP filter is used as analogue dimmer
input. The filter range is 0 to 100, and the normal default is 10. Increase this value to reduce flickering.
Update rate on XDi-net
: is the repetition rate of dimmer messages being sent on XDi-net (CAN).
The AX1 analogue module does not have the
setting “On change”, and therefore only one XDi with analogue input
can control a dimmer group.
Use CAN interface:
See digital dimmer setup above
10.1.4.5
XDi-net dimming (or DAM-MPDO)
This source type does not need a setup menu.
Dimmer values are received and routed directly into the object index table as defined in the table below, where the
actual dimmer value is located in sub-index 0x02 as an unsigned 8 bit parameter (U8).
The data range is 0 to 100 representing the dimmer level of 0-100 % (100 % being max. backlight).
Dimer Group no.
Object index
Sub-index
1
0x3501
0x02
2
0x3502
0x02
3
0x3503
0x02
4
0x3504
0x02
5
0x3505
0x02
6
0x3506
0x02
7
0x3507
0x02
8
0x3508
0x02
9
0x3509
0x02
Local (0xA) *
0x350A
0x02
*) When XDi is in Local group the dimmer data is not sent on XDi-net, but XDi will be able to receive data via CAN
from an external CAN source.
How to send XDi-net data (or DAM-MPDO data
) is described in details in the “XDi-net/CANopen reference
manual”.