Rockwell Automation 1771-QDC, D17716.5.86(Passport) PLASTIC MOLDING MODULE - Manual (Page 57)

Overview of Remaining
Configuration Procedures
Chapter 4
4-2
There are two basic types of command blocks. They are presented in the
following table:
Type of Command Block: Which Contain: Examples:
Configuration Blocks Information necessary to configure your
module to run a certain portion of a profile.
Valve spanning
information for the 1st
clamp close profile.
Profile Blocks Actual process setpoints necessary to
produce a desired part.
1st clamp close profile
operating setpoints.
Status Blocks
The QDC module returns critical operating status and values to the PLC-5
data table through status blocks. Like configuration blocks, status blocks
are areas of PLC-5 data table. Status blocks, however, contain actual
machine operation information rather than machine setpoints and action
commands.
Type of Block: Which Contain: Examples:
Status Blocks Information about machine operation and
QDC module operating status.
The molding machine is
currently performing an
injection operation.
A few special command and status blocks are the Module Configuration
Block, Dynamic Command Block, and the System Status Block.
Type of Block: Description: Examples:
Module Configuration
Block (MCC)
Contains configuration information used
throughout all phases of machine
operation.
Sensor spanning information
and global alarm setpoints.
Dynamic Command
Block (DYC)
Includes all commands necessary to jog,
run, and stop any applicable machine
phase or operation.
Command to start the injection
phase.
System Status Block
(SYS)
Returns to the PLCĆ5 processor
information relevant to common module
parameters.
Actual voltages and
engineering units read at the
four QDC module inputs.
Special Command and
Status Blocks