
5. FUNCTIONAL INSTRUCTIONS
B–61863E/15
PMC SEQUENCE PROGRAM
268
DISP is used to display messages on the CRT screen, CNC of which enters
alarm status. Message data to be displayed is specified after the
parameters of the functional instruction. One DISP functional instruction
can define up to 16 types of message. Display is performed by setting the
control condition ACT to 1. In order to display and then clear a message,
set the display–request bit corresponding to the message data number to
1 and 0, respectively.
Up to four alarm messages (message data that indicates an NC alarm
condition) can be displayed on a screen. The fifth alarm message can be
displayed when one of the four on–screen messages is cleared. Similarly,
the sixth and subsequent messages can be displayed one at a time
whenever one of the alarm messages is cleared from the screen.
Only one operator message (message data that does not indicate an NC
alarm condition) can be displayed on a screen. When one operator
message is displayed on the screen, another cannot be displayed. When
the on–screen operator message is cleared, a different operator message
can be displayed.
Fig.5.43.2 shows the instruction format and Table 5.43.2 shows the
coding format.
5.43
DISP (MESSAGE
DISPLAY)
(PMC–SB/SB2/SB3/
SB4/SB5/SB6/SC/
SC3/SC4 ONLY)
5.43.1
Function
5.43.2
Format