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Signal Connection
3.11 Open Loop and Closed Loop Connection
All axes in PCI-8136M are free to set as open loop pulse output control or
closed loop voltage output control. Users must realize what is the different
between these two settings.
There are 6 motion control sets for every axis in PCI-8136M card. Each set
has its own pulse output, encoder input, analog output, analog input and
dedicated I/O channels . The block diagram of these functions are shown
below:
Open Loop Control Mode (axis independent)
User's
Command
DDA
Engine
Pulse
Generator
Driver and
Motor
Encoder
Read
encoder
feedback
Can be opened
(no connection)
to OUT/DIR pins
from EA/EB pins
Internal connected only for axis 0 to 2
1. AD/DA is free to use at this mode
2. DIO is free to use at this mode
if not set motion I/O active
3. Others ADPIO are free to use except this axis'
4. Encoder 0~2 are free to use if feedback loop is opened
Closed Loop Control Mode (axis independent)
User's
Command
DDA
Engine
Driver and
Motor
Encoder
Read
encoder
feedback
from EA/EB pins
1. AD is free to use at this mode
2. DIO is free to use at this mode if not set motion I/O active
3. Others ADPIO are free to use except this axis'
4. Out/Dir can't be used for other pupose
Gain
D/A
+
-
to DA pins
Pulse Gen.
Pulse output (useless)
to Out/Dir pins