
94
SM-Applications Modules & Motion Processors User Guide
Issue Number: 4
8.2
Freeze input
The SM-Applications Lite, SM-Applications Lite V2 and Digitax Indexer are unlike the
SM-Applications, SM-Applications Plus and Digitax ST Plus modules in that they do not
have digital I/O which can be used to ‘freeze’ the reference and feedback encoder
counters. However, another module in the same drive can be used to freeze the
encoder data in the modules. For instance, setting parameter
x.40
for an SM-Universal
Encoder Plus module to 1 allows other slots in the same drive to freeze data.
Figure 8-3 Apps Lite/Apps Lite V2 and Digitax St Indexer Reference Freeze Input
The encoder revolution counter is cached into parameter Pr
90.29
and the encoder
position is cached into Pr
90.30
.
When freezing the SM-Universal Encoder Plus data, the Second Processor’s freeze
input cannot be used. The freeze should come from the SM-Universal Encoder Plus
module. Refer to the
SM-Universal Encoder Plus User Guide
for more information on
using its freeze with the Second Processors.
NOTE
Reference
encoder
E
Internal drive
encoder
position
counter
Freeze pulse
#81.43
#90.47
#90.28
#90.30
#90.29
0
1
0
1
0
1
Reference encoder
freeze position
Detection
select
Set on detection
Reset to arm
freeze
Internal drive
encoder
revolution
counter
Reference encoder
freeze turns
Position
Module
Содержание Digitax ST Indexer
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