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Working with the RCC
The lightning functions of the RCC are equal to the normal buttons except two points:
̶
The RCC don’t have a symbol and no symbol illumination
̶
The halo-ring of the RCC are illuminated with only one led and not 4 as the buttons
Normally, the RCC are referenced with the index 7 for configure the lightning parameters. Due
to point one no index for RCC are implemented for the symbol lightning. Due to point two the
halo-ring of the RCC does not support the rotate function.
The object RCC direction provides the values of the joystick function of the RCC. The
interpretation of the values are different between the protocol J1939 and CANopen. A J1939
keypad sends the position of the joystick as an unsigned 8-bit value with an offset of 125 that
means 125 are the neutral position. The range of the value is ± 7 that for maximal positive
deflection 132 and for maximal negative deflection 118 are send. There is no difference
between the X and the Y direction.
A CANopen keypad sends the X and Y deflection as a signed 8-bit value with a value range
of ± 7. The maximal negative deflection are reached at -7, the maximal positive deflection
with +7.
The RCC keypad provide a proportional signal from the RCC and uses the whole value range
from -7 to +7 (or 118 to 132 for J1939 keypads) to represent the deflection. With these version
it is possible for the customer to define a specific switching threshold for every application.
The rotation position of the RCC can be read out by the RCC rotation object. The value are in
the range of 1 – 20 and are an absolute value of the RCC. After a Power-On-Reset of the RCC
the same value for RCC rotation are read out as before.
The remaining objects for RCC communication are described sufficient under point 13.1.
Additionally the information are documented in the K-matrix of the keypad.
14.
Operation
General information
After switching on the supply voltage, the keypad will boot automatically. If the keypad uses
J1939-protocol and the keypad receive no messages on the bus it will start blinking after 2
seconds. The operating temperature inside the keypad is continuously monitored. When a limit
temperature of 85°C is exceeded, measures to lower the internal operating temperature are
initiated automatically, starting with reducing the button illumination brightness.
A functional status of the application can be realised by a defined
colouring of the illumination (colour change) or by the illumination
segments of the halo ring illumination which are switched on and off
successively (e.g. flashing in a defined frequency, sequentiallight, etc.).
Combinations of colour and flashing, sequential etc. are also possible (e.g.
rotating in different colours).
