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Auxiliary Area and CIO Area Allocations Section 5-3
Serial Communications
Units (CS/CJ Series)
Words CIO 1500 to CIO 1899 of the CPU Bus Unit Area in the CIO Area are
allocated according to the unit number setting. Each unit number is allocated
25 words. With the protocol macro mode, the words shown in the following
table are used for the Software Switches and Status Area.
CPU Bus Unit Area
CIO 1500 to CIO 1899
n = CIO 1500 + 25 × unit number
5-3-3 Software Switches
The Software Switches are used from the CPU Unit to control the Serial Com-
munications Board and Serial Communications Unit.
Software Switches are used to output control signals from the CPU Unit to the
Serial Communications Board or Unit.
Unit No. Words
Unit No. 0 CIO 1500 to CIO 1524
Unit No. 1 CIO 1525 to CIO 1549
Unit No. 2 CIO 1550 to CIO 1574
Unit No. 3 CIO 1575 to CIO 1599
Unit No. 4 CIO 1600 to CIO 1624
Unit No. 5 CIO 1625 to CIO 1649
Unit No. 6 CIO 1650 to CIO 1674
Unit No. 7 CIO 1675 to CIO 1694
Unit No. 8 CIO 1700 to CIO 1724
Unit No. 9 CIO 1725 to CIO 1749
Unit No. A CIO 1750 to CIO 1774
Unit No. B CIO 1775 to CIO 1799
Unit No. C CIO 1800 to CIO 1824
Unit No. D CIO 1825 to CIO 1849
Unit No. E CIO 1850 to CIO 1874
Unit No. F CIO 1875 to CIO 1899
n: Software switches (port 1/Port 2)
n + 1 to n + 4: Unit status
n + 5 to n + 14: Port 1 status
n + 15 to n + 24: Port 2 status
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