External Search; Detailed Explanation - Mitsubishi Electric M800VW Series Programming Manual

M800V/M80V Series PLC Programming Manual (2/2)
14 PLC Help Function

14.36 External Search

14.36 External Search
External search is a function that searches the machining program according to the machining program storage device,
program No., sequence No. and block No. designated from the user PLC.

14.36.1 Detailed Explanation

The flow of the external search execution process is given below.
(1) The user PLC sets the device, program No., sequence No. and block No.
(2) The user PLC sets the external search strobe signal ON.
(3) The NC searches for the target machining program from the designated device, program No., sequence No. and block
No.
(4) The NC sets the search results as the external search status.
(5) The NC turns the external search finished signal ON.
(6) The user PLC turns the external search strobe signal OFF.
(7) The NC turns the external search finished signal OFF.
Flow of external search process for 1st part system
(4)
Set search results
(3)
Search process
execution
(5)
External search
finished signal ON
(7)
External search
finished signal OFF
IB-1501668-B
NC User PLC
R500 External search status
R2525
Device No.
R2526
Program No.
R2527
R2528
Sequence No.
R2529
R2530
Block No.
R2531
Refer to with error check, etc.
Set device No.
Set program No.
Set sequence No.
Set block No.
(2)
External search
strobe signal ON
(6)
External search
strobe signal OFF
866
(1)