B–64113EN–1/01
13. INPUT/OUTPUT OF DATA
903
It is possible to request from an external source that a program be
registered, collated, or output.
D Registeration/Collation
As triggered by the external read start signal EXRD, the background
edit function saves programs from an external input unit into part
program memory and verifies them.
D Output
As triggered by the external punch start signal EXWT, the background
edit function outputs all programs stored in the part program memory
to an external output device.
[Classification] Input signal
[Function] Programs are registered through the reader/puncher interface. Read
programs are collated with programs already stored in the part program
memory.
[Operation] When this signal becomes logical 1, the CNC operates as follows:
D In all modes other than the MDI mode, the background edit function
reads programs from an external input device, and register them on the
part program memory or collates them with programs already
registered in the part program memory.
(The memory protection key KEY3 <G046#5> determines whether to
register or collate.)
D Bit 1 (RAL) of parameter No. 3201 selects whether to register all
programs in a file or one program at a time. Bit 0 (RDL) of parameter
No. 3201 can be used to delete all programs previously stored in the
part program memory. However, it is impossible to delete programs
protected by bits 0 (NE8) and 4 (NE9) of parameter No. 3202.
D When programs are being registed or collated, the read/punch busy
signal (RPBSY) is kept to be logical 1.
D When the background processing–activated signal BGEACT is
logical 1 (for example, during background editing or MDI mode), the
external read start signal EXRD is ignored.
D When programs are being registered or collated, if the system is reset
or the external read/punch stop signal EXSTP becomes logical 1, the
registeration or collation is discontinued.
D If the foreground processing is already using the reader/puncher
interface (for example, during DNC operation or program reading in
the edit mode), the external read start signal EXRD is ignored.
13.3
EXTERNAL I/O
DEVICE CONTROL
General
Signal
External Read Start
Signal EXRD <G058#1>