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5-22-3
MESSAGE DISPLAY – MSG(46)
FM: First message word
IR, AR, DM, HR, LR
Ladder Symbols
Operand Data Areas
MSG(46)
FM
@MSG(46)
FM
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
Programming Console, GPC, or FIT. The displayed message can be up to 16
characters long, i.e., each ASCII character code requires eight bits (two dig-
its). 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 mes-
sage 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 prior-
ity scheme, based on the area where the messages are stored, for the selec-
tion 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.
In handling indirectly addressed messages (i.e.
*
DM), those with the
lowest DM address values have higher priority.
To clear a message, execute FAL(06) 00 or clear it via a Programming Con-
sole using the procedure in 4-5-5 Clearing Error Messages.
If the message data changes while the message is being displayed, the dis-
play will also change.
Flags
ER:
Indirectly addressed DM word is non-existent. (Content of
*
DM word
is not BCD, or the DM area boundary has been exceeded.)
Description
Message Buffering and
Priority
Clearing Messages
Special Instructions
Section 5-22
Summary of Contents for SYSMAC C200H
Page 1: ...OPERATION MANUAL C200H CPU01 E 03 E 11 E SYSMAC Programmable Controllers Cat No W130 E1 05 ...
Page 2: ...C200H Programmable Controllers CPU01 E 03 E 11 E Operation Manual Revised June 2003 ...
Page 3: ...iv ...
Page 5: ...vi ...
Page 8: ...TABLE OF CONTENTS ix Glossary 345 Index 363 Revision History 369 ...
Page 342: ...336 Programmer Program Date Page Word Contents Notes Word Contents Notes Data Storage ...
Page 374: ...Cat No W130 E1 05 C200H Programmable Controllers CPU01 E 03 E 11 E OPERATION MANUAL ...