140 Virtual Channels
imc CANSAS Users Manual - Doc. Version 1.9 - 05.12.2014© 2014 imc Meßsysteme GmbH
4.7.2.2 PWM8
Pulse-width modulated output module PWM8
This module is quite similar to the DAC8-module. In contrast to the DAC8-module, its output values are
not voltages in the range -10 V ... +10 V but rather results taking the form 0% … 100%.
The module doesn't come with any additional functions.
4.7.2.3 DO8R, DO16R
Digital output module DO16R, relay module DO8R
The digital output modules can only output digital signals. If an analog signal is read in from the CAN-bus,
it must first be transformed to a digital signal, before it can become output. There are various functions
for converting analog to digital data, such as the Schmitt-trigger function, the comparison functions or
the function "Extract bit from word". Digital signals can be outputted either directly after being read in
from the CAN-bus or after prior processing. For the processing of digital inputs, the bit-wise logical NOT
function is available, for example.
Sample application: A digital input bit is to be read in from the CAN-bus, inverted and outputted at the
Digital Output 1. To do this, a virtual channel must first be created and positioned in a CAN-message
using the Drag & Drop technique. In the message mapping dialog for this virtual channel, the position of
the bit to be extracted in the message and the data type (digital) can be set. Then the bit-wise logical
NOT function must be set in the function setting dialog for Digital Output 1, the virtual channel created
must be set as the function's parameter channel.
You can find further information about the modules, not concerning the Virtual Channels, in the chapter
Properties of the Modules .
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