Rockwell Automation 1771-QDC PLASTIC MOLD.MODULE - Manual (Page 68)

2–2 Command 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.
The listings of command blocks use five types of data words:
•
Block ID
•
Bit-mapped
•
Stored-value
•
Open
•
Reserved
Block ID Word
The first word in each command block contains a binary number
code in the low byte that identifies the block. The QDC module uses
block IDs to identify command blocks sent from the PLC processor,
while the PLC processor uses them to identify status blocks received
from the QDC module.
Bit-mapped Words
The first several words in any data block are bit-mapped. For
bit-mapped command words, you must set/reset or latch/ unlatch
command bits to set QDC module operating configurations.
Stored-value Words
These words establish operating conditions for the QDC module, such as:
•
output values for certain conditions
•
minimum and maximum pressures, positions, and velocities
•
alarm setpoints
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.
In the listings of command blocks, each stored-value word is followed
by a bracketed [ ] 2-digit number code denoting the engineering units
and range associated with the value as shown in the following table:
List of Data Words
Engineering Units