
15. PMC CONTROL FUNCTION
B–63833EN–1/02
898
The timing chart for the command operation is shown below.
Command
disabled
EBSYg
(output)
[1]
EMBUFg
(input)
Beginning of
execution
[2]
[1] [2]
End
Command
block
(input)
EBUFg
(input)
Input buffer
Waiting buffer
Executing
buffer
Beginning of
execution
Buffering is disabled, regardless of the buffering disable signal EMBUFg,
for the following commands:
(1) Skip–feed per minute (EC0g to EC6g: 03h)
(2) Reference position return (EC0g to EC6g: 05h)
(3) 1st reference position return (EC0g to EC6g: 07h)
(4) 2nd reference position return (EC0g to EC6g: 08h)
(5) 3rd reference position return (EC0g to EC6g: 09h)
(6) 4th reference position return (EC0g to EC6g: 0Ah)
(7) Machine coordinate system selection (EC0g to EC6g: 20h)
The following commands, for which the reset signal ECLRg is used for
termination, operate as though buffering had been disabled. That is, the
subsequently specified block is not executed but canceled:
(1) Continuous feed (EC0g to EC6g: 06h)
(2) External pulse synchronization – main spindle
(EC0g to EC6g: 0Bh)
(3) External pulse synchronization – first manual handle
(EC0g to EC6g: 0Dh)
(4) External pulse synchronization – second manual handle
(EC0g to EC6g: 0Eh)
(5) External pulse synchronization – third manual handle
(EC0g to EC6g: 0Fh)
(6) Speed command (EC0g to EC6g: 10h)