Rockwell Automation SB3000 Configuration and Programming - Manual (Page 19)

Configuring the UDC Module’s Registers 3-1
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Configuring the UDC Module’s Registers
The Variable Configurator application in the AutoMax Programming Executive is used
to assign common variable names to the dual port memory registers on the UDC
module. You can access these variable names by declaring them using the BASIC
statement COMMON. The dual port memory has 2048 16-bit registers that are
available to the AutoMax Processor and to the tasks that run on the UDC module.
The drive A and drive B registers that are assigned variable names will be latched into
internal memory at the beginning of every scan of the UDC task to provide for a
consistent context for evaluation. The UDC tasks (A and B) may be started and
stopped independently of each other. At the end of the scan, the variables that have
changed will be written back to the dual port memory.
Note that the dual port memory on the UDC module is treated like I/O data in terms of
how the data is affected by Stop All commands and power cycling.
You can access the Variable Configurator by selecting Configure Variables from the
Configure menu in the Rack Configurator. Refer to the AutoMax Programming
Executive instruction manual for the procedures used to configure variables.
The sections that follow describe the registers you can configure in each view:
• The Rail I/O Port 0 and Port 1 views are used to configure the registers assigned
to the hardware that is attached to the PMI Rail ports. (These registers can also be
accessed by double-clicking the PMI view.)
• The Command Registers view is used to configure pre-defined drive control
registers that are written to either by an AutoMax application task or by a UDC
application task and then sent to the PMI.
!
ATTENTION: Only qualified personnel familiar with the construction and
operation of this equipment and the hazards involved should install,
adjust, operate, or service this equipment. Read and understand this
manual and other applicable manuals in their entirety before proceeding.
Failure to observe this precaution could result in severe bodily injury or
loss of life.
ATTENTION: Only qualified Rockwell personnel or other trained
personnel who understand the potential hazards involved may make
modifications to the variable configuration. Any modifications may result
in uncontrolled machine operation. Failure to observe this precaution
could result in damage to equipment and bodily injury.
ATTENTION: Registers and bits in the UDC module that are described
as “read only” or for “system use only” must not be written to by the user.
Writing to these registers and bits may result in improper system
operation. Failure to observe this precaution could result in bodily injury.