CS1D-IC102D Omron, CS1D-IC102D Datasheet - Page 276
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CS1D-IC102D
Manufacturer Part Number
CS1D-IC102D
Description
CS1D Dual IO Control Unit
Manufacturer
Omron
Datasheet
1.CS1D-SP002.pdf
(638 pages)
Specifications of CS1D-IC102D
Lead Free Status / Rohs Status
Lead free / RoHS Compliant
- Current page: 276 of 638
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Data Exchange with CPU Bus Units
7-6
7-6-1
Special I/O Unit Area
(I/O Refreshing)
Transfer of Words Allocated in DM Area
C200H Special I/O Units
CS-series Special I/O
Units
Special I/O Unit Words in the DM Area: D20000 to D29599 (100 Words x 96 Units)
Data Exchange with CPU Bus Units
Special I/O Units
1,2,3...
This section describes how data can be exchanged between Special I/O Units
or CS-series CPU Bus Units, and the CPU Unit.
Special I/O Units include C200H Special I/O Units and CS-series Special I/O
Units. Data can be exchanged between Special I/O Units and the CPU Unit
through the Special I/O Unit Area, the DM Area, or FINS commands.
Data is exchanged each cycle during I/O refreshing of the Special I/O Unit
Area. Basically, 10 words are allocated to each Special I/O Unit based on its
unit number setting. The number of words actually used by the Special I/O
Unit varies; there are models that require 2 words, 4 words, and 20 words.
The Special I/O Unit Area ranges from CIO 2000 to CIO 2959 (10 words
Units).
The 100 words allocated to each Unit are transferred from the DM Area to the
Unit when the PLC is turned on or the Unit is restarted. Some C200H Special
I/O Units do not use any of the allocated DM words and others use only a part
of the allocated words.
There are three times that data may be transferred through the words allo-
cated to each Unit. The timing of data transfers depends on the model being
used.
1. Data transferred when the PLC is turned on.
2. Data transferred when the Unit is restarted.
3. Data transferred when necessary.
Some models transfer data in both directions, from the DM Area to the Unit
and from the Unit to the DM Area. See the Unit’s Operation Manual for details
on data transfers.
Each Special I/O Unit is allocated 100 words in the DM Area in the range of
D20000 to D29599 (100 words
used to hold initial settings for the Special I/O Unit. When the contents of this
area are changed from the program to reflect a change in the system, the
Restart Bits for affected Units must be turned ON to restart the Units.
Special I/O Unit
Transferred in
I/O refreshing
CPU Unit
96 Units). These 100 words are generally
Special I/O Unit Area
10 words/Unit
Section 7-6
241
96
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