Rockwell Automation 57C421B Pulsetach Input Module/DCS 5000/AutoMax - Manual (Page 36)

4Ć14
0 1 2 3 4 5 6 7 9 8 10 11 12 13 14 15
Register 7
Bits
rw rw rw rw rw r r rw r r r r r r r r
Carry
status
Borrow
status
Counter >
comparator
Counter <
comparator
Counter =
comparator status
External latch
input status
External count stop
input status
Origin/clear input status
CCLK off
Pulse input direction: 0 = Forward
1 = Reverse
Carry status reset
Borrow status reset
Counter = comparator status reset
External latch status reset
External count stop status reset
External origin/clear status reset
Figure 4.11 Ć Module Status Register (Register 7)
4.3 Variable Configuration
Before an application task can be written, you need to configure, or
define, systemĆwide data such as the registers on the Pulsetach
Input module as variables. These are variables that must be globally
accessible to more than one task in the rack.
For DCS 5000 and AutoMax Version 2.1 and earlier, you define
systemĆwide variables by writing a Configuration task. For AutoMax
Version 3.0 and later, you define systemĆwide variables using the
AutoMax Programming Executive configuration forms. After the
variables are defined, you can generate the configuration file
automatically.
If you are using AutoMax Version 2.1 or earlier, refer to Appendix F
for examples that show how to define variables in the configuration
task. If you are using AutoMax Version 3.0 or later, see the AutoMax
Programming Executive for information about configuring variables.