Omron CS1W-AD041-V1 - Exchanging Data with the CPU Unit; Outline of Data Exchange

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Exchanging Data with the CPU Unit Section 2-5
• If there is noise interference from power lines (if, for example, the power
supply is shared with electrical welding devices or electrical discharge
machines, or if there is a high-frequency generation source nearby) install
a noise filter at the power supply input area.
2-5 Exchanging Data with the CPU Unit
2-5-1 Outline of Data Exchange
Data is exchanged between the CPU Unit and the CS1W-AD041-V1/081-V1/
AD161 Analog Input Unit via the Special I/O Unit Area (for data used to oper-
ate the Unit) and the Special I/O Unit DM Area (for data used for initial set-
tings).
I/O Refresh Data
Analog input conversion values, which are used as data for Unit operation, are
allocated in the Special I/O Unit Area of the CPU Unit according to the unit
number, and are exchanged during I/O refreshing.
Fixed Data
The Unit’s fixed data, such as the analog input signal ranges and the number
of operational mean value buffers is allocated in the Special I/O Unit DM Area
of the CPU Unit according to the unit number, and is exchanged when the
power is turned ON or the Unit is restarted.
The conversion time and resolution can be set, along with the operation
mode.
Note 1. A single CS1W-AD161 is allocated CIO Area words and DM Area words
for two Units, i.e., 20 words in the CIO Area (CIO 2000 + n × 10 to CIO 2000
+ n × 10 + 19) and 200 words in the DM Area (D20000 + n × 100 to D20000
+ n × 100 + 199).
2. Transferring scaling data is supported by CS1W-AD161 only.
CS-series CPU Unit
CS1W-AD041-V1/081-V1 Analog Input Uni
t
Special I/O Unit Area
I/O Refresh Data
Analog inputs
Analog inputs
DM (Data Memory) Area
Input signal range
Number of opera-
tional mean value
buffers
I/O refresh
Power ON or
Unit restart
Exchanges analog input
values during data refresh.
Transmits fixed data such
as analog input signal
ranges and number of
operational mean value
buffers.
2000 + n x 10
2000 + n x 10 + 9
D20000 + n x 100
D20000 + n x 100 + 99
10
words
100
words
Fixed Data
:
n: Unit number
(See
note 1.)
(See
note 1.)
to
to
(See note 1.)
(See note 1.)
Scaling data (See note 2.)
Conversion time/res-
olution and operating
mode
See 2-5-5 I/O
Refresh Data
Allocations for
details.
See 2-5-4 Fixed
Data Allocations
for details.