Yaskawa YASNAC PC NC PLC Programming Manual - Manual (Page 103)

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YASNAC PCNC PLC Programming Manual Chapter 6: PLC Instructions
• The maximum number of characters per line is 38 characters.
• If more than 14 message display requests are given for one display screen,
14 lines of messages are displayed in order of priority (lower bit given highest
priority).
• The message to be displayed or cleared can be selected by setting “0” or “1” to
the corresponding bit. “1” for the message to be displayed and “0” for the message
to be cleared.
The correspondence is indicated below.
Note 1: If “1” is set for the bit where no message is stored, blank spaces are displayed.
2. This instruction is used to display messages on the screen. It cannot be used to
place the NC in the alarm state. (1-block stop, stop after deceleration, immediate stop).
3. Do not write the data to #1502, #1503, #1506, and #1507, or output the data from these
addresses by using the OUT instruction.
• The PLC system has two display screens for display of messages and they are
controlled by the DISP (SUBP 023) instruction.
Therefore, if the DISP instruction is specified more than one time for the same
message display screen, the display processing is executed more than one time
in one scan and the messages cannot be given correctly.(Messages will be written
over.)
Even if the DISP instruction is specified more than one time, it will not cause a
problem when only one DISP instruction is processed in one scan by designing
a JMP or other appropriate instructions.
Number Maximum Quantity ---
#9024 to #9323 38 words 300 Message table