Service manual

Technical Description
www.adblighting.com Service Manual - page 37
Issue 0.9
6.4.4 DMX Auxiliary connector (J1)
This connector is only mounted on Shield board with the DMX option. The connector is a NEUTRIK
NC4FAH (with lock) or NC4FAH-0 (without lock), with the following wiring:
1 2 3
GND DMX 512 Data – DMX 512 Data+ +24 VDC
The +24 VDC power supply is issued from the internal motor power supply. It is protected through a
1A fuse (RAYCHEM Polyswitch) and filtered by a bypass capacitor.
The DMX is not terminated nor polarized in the PCB. The board provides standard protection against
electrostatic discharge (ESD) transients (up to 15kV for 100pF / 1,5kΩ model).
6.5 Warplink - Inter Board Communications Protocol
The link consists of a single RS485 multi-drop bus. Each transceiver on the link is called a "station".
6.5.1 Transceivers and Termination
The link is not terminated since runs are short and configuration is a star, but
it is biased at each station so that with transmitters switched off or with the link
disconnected, a logical 1 is read. An effective circuit is shown in figure. In the
closed system of the Warp there is no need for isolated transceivers. Slew
rate limited transceivers should be used.
6.5.2 Medium
A controlled impedance line is not necessary. However the data pair should
be twisted if possible and steps must be taken to ensure that the two wires of the pair are kept close
together throughout the run.
6.5.3 Byte Format
The protocol uses the 9 bit communications scheme common in microcontrollers, bit 8 is a start of
message flag. It is 1 for the first character of a frame and is otherwise 0. This first character is
sufficient to indicate to receivers whether they have any interest in the ensuing message. If not, a
receiver can revert to an idle mode pending the next start of frame character. Data format is 1 start
bit, 8 data bits (LSB first), 1 Start of message flag, 1 Stop bit.
Link data rate is 125kBaud.
6.5.4 WarpLink connectors
The internal WarpLink connector is a HE14 1x10 connector, with the following wiring:
1 2 3 4 5 6 7 8 9 10
GND +24V +24V +24V GND data B data A GND Spare 1 spare 2