Emerson AXIMA 2000, Руководство по установке

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AXIMA 2000/4000 Installation Manual
Special Purpose Inputs
Inputs 13 through 16 can be assigned to trigger the high speed
hardware encoder position capture function. These inputs and the Z
encoder channels have direct connection to the encoder DSP gate
arrays. If your application requires accurate positioning or
measurements based on inputs from sensors or switches, inputs 13
through 16 should be used. See position capture input table below.
See the Encoder Capture Instruction in the AXIMA Software
Reference Manual (P/N 400262-00) for more information.
Table 7 Special Purpose Inputs
Since these inputs go through filtering and optoisolation, there is a
10 microsecond delay from the time the input is turned on until the
position is captured. The capture can be programmed to trigger on
rising or falling edge of the input. Due to the switching
characteristics of the optoisolaters, faster triggering speeds can be
obtained by using the rising edge rather than the falling edge. The
encoder Z channel time delay is significantly less at .1 microsecond.
Encoder Input Number Position Capture Input #
1 13 or 14
2 13 or 14
3 15 or 16
4 15 or 16
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