Program Format Switch; Outline; Explanation Of Function - Mitsubishi Electric M800VW Series Programming Manual

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

14.1 Program Format Switch

14.1 Program Format Switch

14.1.1 Outline

G code switch of program format ("program format switch" hereafter) is a function designed to switch the program format (G
code system) using G codes (G188/G189) or PLC signal. While the switch is active, the control runs a program based on the
switched G code system. When you run a lathe-based multi-tasking machine, and if you change the G code system to that of
M system, you can use a free-curved surface machining program made with CAM without modifying the program.
This function can be used when "#1254 set26/bit1" is set to "1".
G code method and PLC I/F method are distinguished in the following points:
This switches by G188/G189 commands in automatic operation.
G code method
(e.g. to switch the format dynamically for some machining processes)
Not in automatic operation
PLC I/F method
(e.g. to enable the state in which the G code system is switched at the time of power up)
This chapter describes the PLC signal method.

14.1.2 Explanation of Function

When the Program format switch request (PFCHR: YD00) turns ON or OFF in the part system designated by the parameter
"#1047 G_Chg_En_Sno" during an operation other than automatic operation, the control enables or disables the program
format switch.
Program format switch
When the Program format switch request signal (PFCHR: YD00) is turned ON, the control switches the program format from
L-system to M-system G code system (G code system 1 (Command type 2)). When the switchover of program format is
completed, the Program format switch in progress signal (PFCHS: XCF0) turns ON. If you start automatic operation with the
Program format switch in progress signal (PFCHS: XCF0) ON, the control runs a program based on the M-system G code
system.
Program format switch
request(PFCHR:YD00)
Program format switch in
progress (PFCHS: XCF0)
In automatic operation
"Run" (OP)
 If you change the Program format switch request signal (PFCHR: YD00) from OFF to ON during automatic operation (In
automatic operation signal "run" (OP: XC12) is ON), the operation error (M01 0215) occurs and the program format switch
is not implemented. Turning OFF of this signal cancels the operation error (M01 0215).
 If you turn ON Program format switch request signal (PFCHR: YD00) and then start automatic operation in any G modal
state that disables program format switch, the program error (P29) occurs and automatic operation is not implemented.
 After turning ON Program format switch request signal (PFCHR: YD00), wait until Program format switch in progress signal
(PFCHS: XCF0) turns ON before you execute automatic operation. Otherwise, it cannot be assured that "the control runs a
program based on the switched G code system from the top block of the program".
Execute program with M system G code system
561 IB-1501668-B