Delta RMC101 - Manual (Page 20)

Features of the RMC100 RMC100 Startup Guide
20
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Command Log
When debugging problems with a system that is using the RMC, it is often difficult
to determine whether the problem is caused by an action of the RMC or the
Programmable Controller (P/C). To help with this problem, the Command Log is
available. The Command Log holds the last 256 commands received through the
communication module; commands sent by RMCWin or the event step table are not
displayed. Therefore, the Command Log can be used to determine which
commands were actually received by the RMC.
Status Words
The Status Words are values showing the state of certain axis properties. These
status words are updated constantly and can be viewed from RMCWin or read from
the RMCWin by a PLC or PC. The status words provide a complete picture of what
is happening in the RMC100. The status words are:
Command Position
Target Position
Actual Position
Transducer Counts
Axis Status Word
Drive
Actual Speed
Null Drive
Step
Link Value
Status Bits and Status Bits Window
The Status register is a collection of 16 bits to provide a summary of the state of the
axis. Eight bits are generally used for error bits. Each of the error bits latch on
when the error is detected.
The Status register is displayed in RMCWin as a 16-bit hexadecimal number. To
make it easier to view each bit, RMCWin provides the Status Bits Window, which
labels each bit independently. These bits are very useful for showing the state of the
axis.
These bits can also be captured and viewed in the plots.
I/O Bit Monitor
The RMC100 provides a visual tool, called the I/O Bit Monitor, for keeping track of
all the digital inputs and digital outputs. This tool constantly updates the state of
each input for the viewer to see. This simplifies design and verification of digital
I/O.
Parameter Error List
Problems related to user-issued commands cause the Parameter Error bit to be set.
There are dozens of specific problems that can lead to this bit being set. These
problems can identified by using the Parameter Error List Window. This window
lists the most recent parameter errors along with a short description.
Index/status/Using the Status
Bits Window
Index/ i/o Bit Monitor /Using
the I/O Bit Monitor
Index/ parameter error:list/
parameter error:list
Index/status word/status word
Index/command log/Command
Log