Omron Sysmac CS1 Operation Manual page 72

Words Allocated in DM Area
1, 2, 3...
General-purpose I/O Words (m+10 to m+99)
52
Note In the following circumstances, an error for the initial setting data transferred
from the CPU Unit's words allocated in DM Area occurs, and SR 24903 turns
ON.
• The total number of input and output transfer words exceeds 90.
• The offset value of the first word address + the number of transfer words
exceeds 100. (The range of the words allocated in DM Area is exceeded.)
• An address that does not exist in the Customizable Counter Unit is specified.
• The first word address + the number of transfer words exceeds the range of the
memory area in the Customizable Counter Unit.
• One of the following settings, which exceed the setting range, has been made.
• The first word address for the words allocated in DM Area is set to a value
between 01 and 09.
• The number of transfer words is set to 91 or higher.
• The area is set to a value outside the range 0 to 4 Hex.
• A hexadecimal value that does not conform to BCD format (i.e., A to F) is
set.
An error is not generated in the following circumstances.
• The input and output words overlap.
• The words (in the CPU Unit) that exchange data with the LR Area and the
words that exchange data with the DM Area overlap.
There is an order for exchanging data using the LR and DM Areas. When words
(in the CPU Unit) overlap, it is the contents of the data sent later that remain
effective. The order is as follows:
1. Outputs to the DM Area
2. Inputs from the DM Area
3. Outputs to the LR Area
4. Inputs from the LR Area
Word addresses
m+10 to m+99
Bits
00 to 15 Words for exchanging general-purpose
I/O with user-set words in the
Customizable Counter Unit.
Section 4-3
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