Unload Program From Program Memory (Punloadp) - Mitsubishi MELSEC Q Series Programming Manual

PUNLOADP
7.18.17

Unload Program from Program Memory (PUNLOADP)

PUNLOADP
PUNLOADP
Function
(1) The standby program stored in the program memory (drive 0) is deleted from the program
memory.
(The program set as the "scan execution type" with the PSCAN instruction or the program
set as the "low speed execution type" with the PLOW instruction cannot be deleted.)
(2) The program No. deleted by the PUNLOADP instruction is made "Empty".
When programs No. 1 to 5 have been set in the program setting of the PLC parameter dialog
box, deleting program No. 2 with this instruction makes program No. 2 open.
Program No.
(3) An extension (.QPG) need not be specified for the file name.
(4) The bit device specified by
this instruction is completed. The bit device is turned OFF at the next END processing.
(5) The PLOADP, PUNLOADP and PSWAPP instructions cannot be executed simultaneously.
If two or more of the above instructions are executed simultaneously, the instruction
executed later will not be executed.
When using the above instructions, provide interlocks manually to avoid simultaneous
execution.
7-446
Command
: Character string data of the program file name to be unloaded, or head number of the devices storing the
S
character string data (BIN 16 bits)
: Device turned ON for 1 scan on completion of the instruction (bits)
D
Internal Devices
Setting
Data
Bit Word
––
S
––
*1
D
Program name
1
MAIN1
2 MAIN2
Deletes "MAIN2" by the
3 MAIN3
PUNLOADP instruction.
MAIN4
4
MAIN5
5
is turned ON during the END processing of the scan where
D
Basic
PUNLOADP
J \
R, ZR
U
Bit Word
––
––
Program No.
1
2
3
4
5
High
Process
Redundant Universal
performance
S D
Constants
Zn
\G
$
––
*1: Local devices cannot be used.
Program name
MAIN1
Empty Program No. 2
is deleted.
MAIN3
MAIN4
MAIN5
LCPU
Other
––
––