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Password Screen Display Function
Section 4-8
Procedure for displaying the password screen
Explained here is the procedure for displaying the password screen by specifica-
tion from the PC.
The password screen is displayed by writing the screen number of the screen for
which the password setting was made into the screen switch setting word of the PT
status control area.
[Screen switch setting word of the PT status control area]
14 13 12 11 10 9
8
7
6
5
4
3
2
1
0
15
Screen No. (BCD, 4 digits)
Word
S
Setting with the support tool
Make the following settings with the support tool.
PT status control area allocated word:
CH0120
PT status notify area allocated word:
CH0130
Password screen number:
10
Screen number displayed on password input error: 20
S
PC program
Create the following PC ladder program.
@MOV(21)
#0010
0120
000200
@MOV(21)
#0020
0120
(1)
Password screen for screen No.10
PT status control word
(2)
Designate screen No.20
PT status control word
013209
S
Program operation
(1) When contact 000200 comes ON, “10” is set in the screen switch setting word
of the PT status control area. As a result, the password screen for screen
number 10 is displayed.
(2) If the correct password is not input in three successive attempts, contact
013209 (the password input error flag (bit 4) in the PT status notification bits)
comes ON.
On occurrence of a password input error, “20” is set in the screen switch set-
ting word of the PT status control area and the screen whose screen number
is 20 is displayed.
Summary of Contents for NT11S
Page 1: ...Cat No V029 E1 2 NT11S Programmable Terminal OPERATION MANUAL ...
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Page 5: ...iii NT series Programmable Terminal Operation Manual Produced June 1997 ...
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