Installation guide

NextMove Mappings
MN1270 02.2002 141
7.2.1 Open Loop Access
The hardware channels on main and expansion cards have a fixed numbering system. Any open loop
access to hardware will always be made through the channel number. The following tables show how
the open loop channel number corresponds to the labeling on the breakout unit.
Main Card – M1, M2, M3, M4, M8
Open loop channel DAC Encoder Pulse Direction
0 0 A E
1 1 B F
2 2 C G
3 3 D H
Expansion Card - ESS, ES
Open loop channel DAC Encoder Pulse Direction
4 0 A E
5 1 B F
6 2 C G
7 3 D H
where:
M2 - NextMove PC with 2 axes of control
M3 - NextMove PC with 3 axes of control
M4 - NextMove PC with 4 axes of control
M8 - NextMove PC with 8 axes of control
ESS - NextMove PC expansion with 4 servo and 4 stepper axes
ES - NextMove PC expansion with 4 stepper axes
For example, to write a value to the first DAC on the main card in open loop mode, the DAC keyword
would be called with a channel number of 0. The set the pulse or direction pins of the first stepper
outputs in open loop mode would also use a channel number of 0.
Open loop access is available as long as no axis mapped to the channel configured to be using the
hardware being accessed in open loop mode. For example, if axis 0 is mapped to channel 0 and the axis
is configured as a servo, then the pulse / direction outputs of channel 0 can be used.
7.3 NextMove BX
NextMove BX is sold in 2, 3 and 4 axis variants. Use the VIEW CONFIG keyword to see the default
assignments.
The
NUMBEROF keyword can also be used to return information of available axes and channels. The
CHANNELTYPE keyword can be used to determine the hardware types available for a given channel
number.
7.3.1 Open Loop Access
The hardware channels on main card have a fixed numbering system. Any open loop access to
hardware will always be made through the channel number. The following tables show how the open
loop channel number corresponds to the labeling on the breakout unit.