Rockwell Automation 1771-QDC PLASTIC MOLD.MODULE - Manual (Page 178)

3–2 Status Word/Bit Descriptions
Publication 1771-6.5.88 – July 1997
Notes: 1. For [ ] engineering units, see page 3.
2. When using the Inject/Clamp/Eject mode, all pressure readings are system pressure at input 2, except where noted.
Stored-value Words
The QDC module reports actual values of machine operation obtained
from sensor devices that you connect to its input terminals. The values
are transferred to the PLC processor for data processing and alarm
purposes. These values include positions, pressures, and velocities.
Open Words
These words are not used by the QDC module. We recommend
leaving them unused.
Reserved Words
These words are not currently used by the QDC module but are reserved
for future enhancements. We recommend leaving them unused.
The QDC module decodes its own I/O configuration based on
parameters that you provide in the Module Configuration Command
Block (MCC). I/O configuration determines which of the command and
status blocks the module supports. For the module to support the full
complement of command and status blocks, you must establish the
following position configurations for complete machine control:
•
Connect a ram (screw) position sensor to input 1.
•
Connect a clamp position sensor to input 3.
•
Connect an ejector position sensor to input 4.
If you omit any of these three requirements, the QDC module rejects
some of the defined command blocks and inhibits some of the
defined status blocks because the module cannot use or generate
block parameters without data from a critical input which may have
been excluded during configuration. If you attempt to download an
unusable command block from the host processor, the QDC module
treats it as unrecognizable and discards the data. It does so in the
same manner as if it had received a command block containing an
undefined Block ID.
Important: When using the inject/clamp/eject mode, all pressure
readings are system pressure at input 2, except where stated as cavity
(or system) pressure. See System Pressure in Chapter 1 of the
corresponding User Manual.
Data Blocks Require I/O
Configuration
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