IMS MicroLYNX - Page 43

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The clock numbers are tied
directly to their associated
I/O channel and cannot be
re-configured! For example,
Clock 3A will ALWAYS be
on channel 15. The only
change that can be made to
the first IOS parameter
for the high-speed I/O
is if you want to use it
for a general purpose or
dedicated function, or line
types 0 and 9 through 25!
speed differential I/O. Figure 9.6 illustrates the IOS variable settings for the
high speed differential I/O.
Configuring the High-Speed I/O to a Non-Clock
Function
Configuring the high-speed I/O to clock functions will be covered in depth in
the following subsections on configuring encoder and ratio functions.
Here we will briefly discuss using the high-speed I/O as a general
purpose or dedicated I/O function.
Care must be taken when configuring the high-speed I/O to a
general purpose or dedicated function as the output current sink is
150mA for the entire I/O group 10.
The IOS variable will be configured for the high-speed I/O in the
same fashion as it is set for the isolated I/O.
For detailed usage example see Section 12, Sample Applications:
Registration.
Connecting and Configuring an Encoder
The high-speed differential I/O module may be used for closed loop
motion control by receiving quadrature input from a differential or single ended
encoder.
High-Speed I/O channels 13 and 14 are configured by default for this function, so
you would want your expansion module inserted into expansion slot #2.
Connect your encoder as shown in the following figure and table.
MICRO
TM
MicroLYNX
123
GND
+5VDC
Channel B-
Channel A+
Channel B+
Channel A-
Differential
Encoder
Steppin
g
Motor
Connection Showin
g
8 Position
Phoenix Terminal
Connection Showin
g
10 Pin Header
GNDGND
+5VDC+5VDC
Channel B-14-
Channel A+13+
Channel B+14+
Channel A-13 -
Figure 9.7: Differential Encoder Connection
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