Chapter 2 Systems specification
2-29
2-5
User memory
User's Memory includes program memory for programming PLC operations and system parameters for defining the system.
2-5-1
Configuration of user's memory
U
se
r
m
em
o
ry
Programming memory
7.5K
... In the user program area, subroutines and interrupt routines are
also programmed into this area
S
y
st
em
p
ar
am
et
er
Program-name
0.5K
... Alphanumeric characters within 8 digits of the name of the user
program
Passwords
... 8 digits of the security code for the program
I/O array
Check instruction
... Setting whether I/O module alignment is checked or not when
power is turned on
Power failure holding area
... Set the storage area of the function memory.
Printer Port
... Set the station number, mode, and parity of the general purpose
communication port.
Watchdog timer
... Setting of the traffic congestion monitoring timer of the
computing processor
2-5-2
Programming memory
The program area can be divided into two areas.
①
Main program area
Scanning is normally performed in the range from 0 to END command.
Main program area
(Stage or Ladder Programs)
②
Subprogram area
From the END command to the last address, it is usually from the
first label instruction (CLBL, ILBL, DLBL) to the last command
(CEND, IEND, data entry command).
There are three types of areas: subroutines between CLBL~CEND
commands executed by CAL commands, interrupt routines
between ILBL~IEND commands executed by interrupt input or
timer interrupts, and data registration commands (ACON, NCON)
after DLBL commands referenced by data transfer commands.
All subroutines and interrupt routine programs are written in ladder
language. (Stage-type programs are not available)
③
Interrupt routine limitations
Do not use the following instructions in an interrupt routine.
CAL,CLBL,CEND,FOR,NEXT,TMR,HTMR,ATMR,AHTMR,CNT,GCNT,UDCNT,SG,ISG,JMP,NJMP,CV,CVJ
MP,PD,SR
0番地
END命令
END命令
DLBL命令
データ登録命令
CLBL命令
サブルーチン
ILBL命令
割り込みルーチン命令
IEND命令
CEND命令
サブ
プログラム
エリア
(ラダー式
プログラム)
T,C,S
RST
S
O0
ILBL
No.0 area
END command
END command
DLBL command
Data registration command
CLBL command
Subroutine
CEND command
ILBL command
Cut-in routine command
IEND command
Sub program
area (ladder
style
program)
Summary of Contents for Kostac SJ-Ether Series
Page 1: ...English version of the KOSTAC SJ Ether series user s manual SJ ETHER USER M...
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Page 113: ...3 24 Note Refer to 6 3 3 Module Assembly for connections and locks between modules...
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Page 156: ...flashing OFF Not sent H W RX Green flashing Receiving H W OFF Not received H W...
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Page 310: ...Chapter 7 Maintenance...
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