KEYENCE Visual KV Series - Manual (Page 117)

2.4 Instruction Details
1
2
3-93 Chapter 2 Instructions
(8)
2 3
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
(4)
2 2
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
(2)
2 1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
(1)
2 0
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
2
3
4
5
6
7
8
9
A
B
C
D
E
F
0 0 0 0
3 2 1 0
0
0 0 1 0
3 2 1 0
2
0 1 1 0
3 2 1 0
6
1 0 0 1
3 2 1 0
9
SW4 SW3 SW2 SW1
MEMSW
$0269
Retains all errors when power is ON.
Retains utility relays 3000 through 3999.
(Switch No.)
(Example)
Hexadecimal
number
Clears DM0000 to DM0999
when power is ON.
Retains Internal utility relay
5000 through 5999 and 6000
through 6999.
MEMSW
Note 1: When a read-protected program is transferred into the KV PLC it cannot
be read or modified from this PLC. Before read-protecting a program, be sure to
create a backup copy of the program.
Note 2: When a 24-bit high-speed counter comparator is used, the ladder program
which specifies the numerical values of a 24-bit CTC is required before starting the
high-speed counter.
Note 3: The value of MEMSW can be changed even during operation. However,
the new operation is not actually performed. The change is effective only after the
KV is turned off or stopped once and then restarted.
Details of MEMSW
■ Setting memory switches
Specify a hexadecimal number for each switch No.
Tips
• The data entered for the memory switch is set into the KV PLC when the pro-
gram is transferred to the KV PLC.
• When MEMSW instruction is not entered into the program, "$0000" is set.
• If you try transfer a program into the KV PLC which is write-disabled, warning
message "WRITE PROTECTED REPLACE OK?" is displayed. When executing
the transfer regardless of the message, press .
Description
Hexadeci-
mal number
To use internal utility
relays 1000 through
1915 as latch relays.
To clear a counter when
operation is started.
To use a 24-bit high-
speed counter CTH1.
To clear a DM when
operation is started.
To read-protect a
program.
To use a 24-bit high-
speed counter CTH0.
MEMSW
$0004
MEMSW
$0E00
MEMSW
$8000
MEMSW
$2000
MEMSW
$0800
MEMSW
$1000
ENT
R-SRCH
KVNKA Chap 02_4aP.p65 08.3.11, 11:58 AM 93