Eaton XN300, Manual

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19 XN-322-16DIO-PC05 digital input/output module
19.3 Wiring
XN300 slice modules 06/16 MN050002 EN www.eaton.com
127
Figure 73: PWM signal measurement
a
High Time
b
Low Time
19.3.3 Configuring inputs 1 to 4
Counter mode register object 0x4170 can be used to configure the function
for inputs 1 to 4 and, accordingly, select the operating mode you want to
use.
In addition, any writing command to counter mode register object 0x4170
will reset counter registers 0x3172 through 0x3177 to 0x00.
The following functions are available:
19.3.4 Connecting the power supply
The cross-sectional area of the +24 V cable used to supply power at X5 must
be sized for the maximum total current drawn by all the outputs.
It is impermissible to apply a voltage, at any output, that exceeds the supply
voltage by more than 0.7 V.
t
① ② ② ①
t
P
t
P
Data bit designation Description
B1 B0
0 0 Input 1/2 Counter Mode
Every time there is a rising edge at input n, the value in the register for
counter n will be incremented by one. When there is a counter over-
flow, the value will jump from 16#FF to 16#00.
0 1 Incremental Encoder Mode
Input 1(3) and input 2(4) will be used as an incremental encoder with
AB quadrature mode and four samples encoding.
1 1 PWM Time Measuring Mode
(High-Time in
μ s, Period Time in μ s)
Data bit designation Description
B3 B2
0 0 Input 3/4 Counter Mode
0 1 Incremental Encoder Mode
1 1 PWM Time Measuring Mode