Data Memory (Dm) Allocation; Shared Area - Omron CPM2C Operation Manual

Data Memory (DM) Allocation

7-4

Data Memory (DM) Allocation

7-4-1

Shared Area

Structure of the Control
Data Area
The following diagram shows the usage of the Unit's allocated DM words.
Shared area
(103 words)
Control data area
The shared area is used to set and monitor values shared by all of the Units
(components).
The control data area contains 103 words that are used to control operation of
the Simple Communications Unit and monitor the Unit's operating status.
Ensure that there are 103 words available for the Control Data Area
regardless of the number of connected Units. The starting DM address is
set with Operation Switch SW2. Refer to Operation Switch (SW2) on
page 231 for details.
Offset
+0 Simple Communications Unit control
+1
Simple Communications Unit status*
+2
Syntax error DM address*
+3 Communications control for Units 0 to 7
+4 Communications control for Units 8 to 15
Individual Unit areas
CompoWay/F
(27 words max.)
Read variable
type area
(26 words max.)
Write variable
(27 words max.)
type area
(26 words max.)
SYSWAY
(Temperature Controller: 11 words
Read data area
Digital Panel Meter: 18 words)
(Temperature Controller: 9 words
Digital Panel Meter: 10 words)
Write data area
Function
1
1
Section 7-4
Read data area
Write data area
237