Omron C200H-ASC11 Manual page 49

DM Area Allocations
Unit No.
0 D20000 to D20099
1 D20100 to D20199
2 D20200 to D20299
3 D20300 to D20399
4 D20400 to D20499
5 D20500 to D20599
Setup Area
(10 words)
IORD/IOWR Areas
(90 Words)
Ladder program
IORD (#00
IOWR (#00
CS1-series PCs
Words Unit No.
6
7
8
9
---
---
The first 10 words (0 to 9) of the allocated 100 words in the DM area are the
ASCII Unit's Setup Area. When power is turned ON or the Unit is restarted, it
will be possible to transfer the contents of these words from the CPU Unit to
the ASCII Unit.
The Setup Area consists of the following parameters. For details, refer to 3-2-
2 Overview of DM Allocations.
• Communications parameters for the ASCII Unit ports.
• Number of the program activated at startup.
• Division of the remaining 90 words into an IOWR Area and IORD Area.
• Transfer ON/OFF setting for the remaining 90 words from the CPU Unit to
the ASCII Unit at power ON or when the Unit is restarted.
The 90 words (10 to 99) remaining out of the 100 words are called IORD/
IOWR Areas and are used for IOWR/IORD instructions from the CPU Unit.
Within the ASCII Unit, these are the areas that can be read/written using the
PC EGET/EPUT commands from the ASCII Unit.
Within these 90 words, you can set which words the CPU Unit can read using
the IORD instruction (i.e., the area written by the ASCII Unit via the PC EPUT
command called the IORD Area) and which words the CPU Unit can write
using the IOWR instruction (i.e., the area read by the ASCII Unit using the PC
EGET command called the IOWR Area).
CPU Unit
First word
((
Read
)
First word
((
Write
)
You can also set whether or not the IORD and IOWR Areas in the DM words
allocated to the ASCII Unit in the CPU Unit are transferred to the ASCII Unit's
IORD/IOWR Area when power is turned ON or the ASCII Unit is restarted.
This parameter is set in word m + 1 bits 08 to 11. If not transferred, the DM
area words (m+10 to m+99) can be used as word bits for other purposes in
programming.
Words
D20600 to D20699
D20700 to D20799
D20800 to D20899
D20900 to D20999
---
---
ASCII Unit
IORD/IOWR area
Words
10
IORD Area
IOWR Area
99
Unit No.
A D21000 to D21099
B D21100 to D21199
C D21200 to D21299
D D21300 to D21399
E D21400 to D21499
F D21500 to D21599
BASIC
Not used
Write
PC EPUT
Read
PC EGET
Section 3-2
Words
39