Rockwell Automation 57C620 AutoMax Programming Executive Version 3.8 - Manual (Page 115)

7Ć3 Configuring Variables
7.2 Forms Used for Configuring Variables
There are three types of forms used to configure variables, a basic
form used for I/O and interface modules, a form for common memory
variables, and a form used for Network Interface modules. These
forms are described in sections 7.2.1 Ć 7.2.3 below.
7.2.1 Basic I/O and Interface Module Configuration Form
The basic form is used for I/O modules, interface modules (except
the Network Interface; see 7.2.3), and UDC modules. The basic form
is essentially a list of the registers/bits that can be configured for that
module. Some forms might include descriptions for dedicated bits or
registers, e.g., interrupt enable."
The basic form is also used to configure Universal Drive Controller
(UDC) modules (M/N 57552). There are eight views available for the
Universal Drive Controller module form. Refer to the DC Drive
Configuration and Programming instruction manual (SĆ3006) for a
detailed description of the configurable variables on the UDC
module.
7.2.2 Common Memory Variable Configuration Form
A second type of form in the Variable Configurator allows you to
configure common memory variables. Each rack has one single form
for configuring the common memory variables in that rack. The form
is organized by item number, not by register/bit location because
storage of common memory variables is determined by the
Processor module(s) and Common Memory module, if any, in the
rack. This single form is accessible from all Processor modules and
from the Common Memory module. For example, if you configure
item 64 on the Processor module in slot 2 as VAR_1%, the form for
any other Processor or the Common Memory module in will display
VAR_1% as item 64. If the nonĆvolatile checkbox is checked, the
variable will retain its value in the event of a power loss or power
cycle.
Because common memory variables are not assigned to a module in
any one slot, they are actually stored in the database for the rack in
slot 99, regardless of the module on which they were originally
configured. Slot 99 is not an actual physical slot in the rack and
cannot therefore be viewed by the user. It may, however, be
referenced in an error message on the screen, or after a version 2.0
rack is imported.
The following common memory variables are preĆdefined for every
rack. However, they do not appear on the form for common memory
variables. You must enter these variable names on the form if you
want to use these variables in application tasks.
AUTORUNSTATUS@ Ć True when AUTO RUN is enabled for
the rack; false if AUTO RUN is not
enabled
FORCINGSTATUS@ Ć True when a variable is forced in the
rack; false when no variables are
forced in the rack