Message Display - Msg(46) - Omron SYSMAC C200HS Operation Manual

Special Instructions
00000
AR 2513 ON when tracing
AR 2512 ON when trace is complete
Address Instruction
00000 LD
00001 OUT
00002 TRSM(45)
00003 LD
5-25-4 MESSAGE DISPLAY – MSG(46)
Limitations
Description
Message Buffering and
Priority
278
The sampled data is written to trace memory, jumping to the beginning of the
memory area once the end has been reached and continuing up to the start
marker. This might mean that previously recorded data (i.e., data from this sam-
ple that falls before the start marker) is overwritten (this is especially true if the
delay is positive). The negative delay cannot be such that the required data was
executed before sampling was started.
Operands
0000
AR 2514
AR 2513
Ladder Symbols
MSG(46) @MSG(46)
FM
FM and FM+7 must be in the same data area.
When executed with an ON execution condition, MSG(46) reads eight words of
extended ASCII code from FM to FM+7 and displays the message on the Pro-
gramming Console. The displayed message can be up to 16 characters long,
i.e., each ASCII character code requires eight bits (two digits). Refer to Appendix
I for the extended ASCII codes. Japanese katakana characters are included in
this code.
If not all eight words are required for the message, it can be stopped at any point
by inputting "OD". When OD is encountered in a message, no more words will be
read and the words that normally would be used for the message can be used for
other purposes.
Up to three messages can be buffered in memory. Once stored in the buffer, they
are displayed on a first in, first out basis. Since it is possible that more than three
MSG(46)s may be executed within a single cycle, there is a priority scheme,
based on the area where the messages are stored, for the selection of those
messages to be buffered.
The priority of the data areas is as follows for message display:
LR > IR (I/O) > IR (not I/O) > HR > AR > TC > DM
In handling messages from the same area, those with the lowest ad-
dress values have higher priority.
AR
Starts data tracing.
2514
Designates point for
TRSM(45)
tracing.
Indicates that tracing is in
00200
progress.
Indicates that tracing has
00201
been completed.
Address Instruction
00004 OUT
00005 LD AR
00006 OUT
FM
Section 5-25
Operands
00200
2512
00201
Operand Data Areas
FM: First message word
IR, AR, DM, HR, LR