YASKAWA mp2500 User Manual page 21

Chapter 1 Overview
Builder
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
CB
System CB
$SB
CW
System CW
$SW
1-3 Builder Configuration and Functions
Bit memory.
Used as the flag signal information of I/O.
Maximum points: bit 64K points (up to 64K points of bit
memory)
System bit memory.
Predetermined usage.
Occupies 32 bit points from the CB number.
(The default is CB4000 to CB4031)
System bit memory.
Predetermined usage. $SB0 to $SB2047
Word memory.
Although each point is 16 bits, string and bit data can be
used as continuous memory.
Maximum points: word 8192K points
System word memory.
Predetermined usage.
Occupies 32 word points from the CW number.
(The default is CW4000 to CW4031)
System word memory.
Predetermined usage.
$SW0 to $SW2047
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