Modular l ynx system – Intelligent Motion Systems Modular LYNX System User Manual
Page 33
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Modular L
YNX System
Modular LYNX System 12.05.2003
is demonstrated in
Typical Functions of the Differential I/O: Connecting and Using an Encoder.
Clocks 2, 3
and 4 are set up as Quadrature inputs by default. The defaults for each I/O Line Pair are:
IOS 13 = 3, 0, 1, 0, 1, 0
IOS 14 = 4, 0, 1, 0, 1, 0
IOS 15 = 5, 0, 1, 0, 1, 0
IOS 16 = 6, 0, 1, 0, 1, 0
IOS 17 = 7, 0, 1, 0, 1, 0
IOS 18 = 8, 0, 1, 0, 1, 0
S e t t i n g t h e D i g i t a l I n p u t F i l t e r i n g f o r t h e D i f f e r e n t i a l I / O
User definable Digital filtering
makes the LYNX well suited for
noisy industrial environments.
The filter setting is software
selectable using the
IOF
Variable
with a minimum
guaranteed detectable pulse
width of 18 microseconds to 2.3
milliseconds. The table (right)
illustrates the IOF settings.
Table 6.6: Digital Filter Settings for the Differential I/O
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Output (+)
Output (+)
Output (-)
Step Clock
Secondary
Drive
Direction
+5VDC
Clock
User
Defined
Function
IOS
Hi
gh
S
p
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ed D
if
fe
re
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ia
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/O
M
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10k
Ω
4k
Ω
3.3k
Ω
20k
Ω
Figure 6.7: Differential I/O Output Equivalent Circuit
C o n f i g u r i n g a n
O u t p u t
The Differential I/O Group 10 has 3 Channels (Line Pairs 13 & 14, 15 & 16, and 17 & 18) that can be config-
ured as an output by the user and One Channel (Line Pairs 11 & 12) that is configured as output only. (SCK
and DIR on the Control Module.) These outputs can be configured as high speed outputs or 0 to 5VDC
general purpose outputs by using the IOS variable. The high speed clock outputs have the following
restrictions:
Line Pairs 11/12, 13/14 and 15/16 can be configured to Step Clock/Direction or Up/Down.
Line Pair 17/18 is limited to 1MHz Reference Out (17) and 10MHz Reference Out (18).