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Auxiliary Area and CIO Area Allocations (Modbus-RTU Slave Mode)
Section 9-3
Serial Communications
Boards (CS Series only)
Words CIO 1900 to CIO 1999 in the Inner Board Area are used for a Status
Area. Only the words shown in the following table are used for the Status Area
with Modbus-RTU Slave communications.
Inner Board CIO Area
CIO 1900 to CIO 1999
Serial Communications
Units (CS/CJ Series)
Words CIO 1500 to CIO 1899 in the CPU Bus Unit Area in the CIO Area are
allocated according to the unit number setting. Each Unit is allocated 25
words. Only the words shown in the following table are used for the Status
Area with Modbus-RTU Slave communications.
CPU Bus Unit Area
CIO 1500 to CIO 1899
n = CIO 1500 + 25
×
unit number
Status Area
The Status Area is used for status information input from Serial Communica-
tions Board or Unit to the CPU Unit. The Status Area is where the Serial Com-
munications Board or Unit set communications status, the transmission
control signal status, and the transmission error status.
n = CIO 1500 + 25
×
unit number
Words
Usage
CIO 1901 to CIO 1904
Board status
CIO 1905 to CIO 1914
Port 1 status
CIO 1915 to CIO 1924
Port 2 status
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 1699
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 + 1 to n + 4: Unit status
n + 5 to n + 14: Port 1 status
n + 15 to n + 24: Port 2 status
Words
Bit
Contents
Boards
(CS Series only)
Units
(CS/CJ Series)
Port 1
Port 2
Port 1
Port 2
CIO 1901
n + 1
02 to 15
Reserved
01
1: Error log EEPROM error
0: Error log EEPROM normal
00
1: Protocol data error
0: Protocol data normal
CIO 1902
n + 2
00 to 15
Reserved
CIO 1903
n + 3
00 to 15
Reserved
CIO 1904
n + 4
00 to 15
Reserved
Summary of Contents for SYSMAC CJ1W-SCU21-V1
Page 3: ...iv...
Page 5: ...vi...
Page 9: ...x...
Page 15: ...xvi...
Page 89: ...60 Basic Operating Procedure Section 1 9...
Page 151: ...122 RS 232C and RS 422A 485 Wiring Section 3 4...
Page 173: ...144 Host Link Function for Replacing Existing PLCs Section 4 6...
Page 223: ...194 Enhanced Protocol Macro Functions Section 5 6...
Page 277: ...248 Communications Frames Section 6 8...
Page 291: ...262 Basic Operating Procedure in No protocol Mode Section 7 4...
Page 301: ...272 Auxiliary Area and CIO Area Allocations Section 8 3...
Page 391: ...362 Introduction Appendix A...
Page 421: ...392 CompoWay F Master Protocol Appendix B...
Page 513: ...484 E5 K Digital Controller Read Protocol Appendix F...
Page 571: ...542 E5ZE Temperature Controller Write Protocol Appendix I...
Page 587: ...558 E5 J Temperature Controller Protocol Appendix J...
Page 627: ...598 ES100 Digital Controller Protocol Appendix K...
Page 661: ...632 V500 V520 Bar Code Reader Protocol Appendix M...
Page 697: ...668 3Z4L Laser Micrometer Protocol Appendix N...
Page 717: ...688 Visual Inspection System Protocol Appendix O...
Page 755: ...726 V600 V620 ID Controller Protocol Appendix P...
Page 763: ...734 Hayes Modem AT Command Protocol Appendix Q...
Page 767: ...738 Changing Communications Port Settings Using STUP 237 Appendix R...
Page 781: ...752 Revision History...