1-3 Builder Configuration and Functions
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Builder
Chapter 1 Overview
Shared memory
This is the region in memory that can be shared by other applications.
Communication is conducted by exchanging data via this region. There are
following types of shared memory.
Item Contents
CB Bit
memory.
Used as the flag signal information of I/O.
Maximum points: bit 64K points (up to 64K points of bit
memory)
System CB
System bit memory.
Predetermined usage.
Occupies 32 bit points from the CB number.
(The default is CB4000 to CB4031)
$SB
System bit memory.
Predetermined usage. $SB0 to $SB2047
CW Word
memory.
Although each point is 16 bits, string and bit data can be
used as continuous memory.
Maximum points: word 8192K points
System CW
System word memory.
Predetermined usage.
Occupies 32 word points from the CW number.
(The default is CW4000 to CW4031)
$SW
System word memory.
Predetermined usage.
$SW0 to $SW2047
