IDEC MICRO3 User Manual

5: CPU CONFIGURATION (FUN)
5-10 USER’S MANUAL
FUN22: User Program Protection
The user program in the MICRO
3
base unit can be protected from reading, writing, or both using FUN22.
To protect a user program, first transfer the user program from the program loader to the MICRO
3
base unit (see page 3-9)
and send a password to the MICRO
3
base unit by pressing the keys:
Enter a password of 1 through 4 digits using the 0 through 9 and A through F keys:
Move down the cursor to the asterisk, and press the REP key
repeatedly to select a protection mode from read, write, or
read/write protection.
R/: Read protect
/W: Write protect
R/W: Read and write protect
To execute the protect command, press the key. When the program protection is completed, “END” is displayed.
To cancel the program protection in the MICRO
3
base unit, first read FUN22 and move down the cursor:
Enter the password correctly and press the key. When the program protection is canceled successfully, “END” is dis-
played. If the password is incorrect, “Pass Word NG” is displayed, and the protection is not canceled.
To return to the editor mode, press the CLR key.
FUN23: PLC System Program Version Readout
The system program version in the MICRO
3
base unit
can be read using FUN23. The system version is dis-
played in 4 digits.
To return to the editor mode, press the CLR key.
FUN24: PLC Operating Status Readout
MICRO
3
operating status can be read using FUN24.
Run: MICRO
3
is running.
Stop: MICRO
3
is stopped.
To return to the editor mode, press the CLR key.
Warning
• When proceeding with the following steps, make sure to note the password, which is needed to
cancel the program protection. If the user program in the MICRO
3
base unit is write- or read/write-
protected, then the user program cannot be changed without the password.
FUN
FUN 22 PASS
Pass Word :____
(Mode * )
2
BRD
2
BRD
FUN 22 PASS
Pass Word ____
(Mode * )
FUN 22 PASS
Pass Word 91AF
(Mode * ) OK?
0
9
JMP/E
RST
F
Q
NOT
A
through through
FUN 22 PASS
Pass Word :91AF
(Mode R/ ) OK?
REP
B
FUN
FUN 22 PASS
Pass Word :
(Mode *R/W)
2
BRD
2
BRD
FUN 22 PASS
Pass Word
(Mode *R/W)
FUN
FUN 23 Ver.No.
PC System
Ver.0002
2
BRD
3
BPP
FUN
FUN 24 STATE
State (Run)
2
BRD
4

IDEC MICRO3 Specifications

General

Brand	IDEC
Model	MICRO3
Category	Controller
Language	English