OMRON
NS Series Quick Start Manual
Page 17
(1) Background color can be set in the [Color Setting] window.
(2) Macro execution condition can be set in the [Macro] tab (refer
the Macro Reference Manual).
(3) Click on [OK] button when settings are made.
3.3 Explanation of NS Terminal memory
PT (Programmable Terminal) memory is made up of internal memory and system
memory. Both of the memory areas are divided into bit and word sections.
3.3.1 The Internal Memory ($B, $W)
The internal memory in the PT can be read and written by the user. Internal memory
can be allocated as required for settings, such as the communications addresses of
functional objects.
The bit memory in a PT is indicated by
$B
. The size of this memory is 32,768 bits.
Addresses from $B0 to $B32767 can be read and written by the user. Bit memory is
used to signal pieces of information that indicate ON/OFF status for functional object
addresses and control flags.
The word memory in a PT is indicated by
$W
. The size of this memory is 32,768
words. Addresses from $W0 to $W32767 can be read and written by the user. Word
memory is used to store all numeral and character string data, including data for
allocated addresses for functional objects. Each word contains 16 bits, but
consecutive words can be used as required for character strings and 32-bit data.
Note
Internal memory can not be read and written directly from the host.
3.3.2 The System Memory ($SB, $SW)
System bit memory (
indicated by $SB
) is used to exchange information between the
host and the PT, such as for controlling the PT and notifying the host of PT status, in
bit units. The system bit memory contains 48 bits with predefined functions.
The system bit memory is listed in the following table:
Address Classification
Function
1
2
3