161
Serial PLC Link Area
Section 4-7
4-7
Serial PLC Link Area
The Serial PLC Link Area contains 90 words with addresses ranging from
CIO 3100 to CIO 3189 (bits CIO 3100.00 to CIO 3189.15). Words in the Serial
PLC Link Area can be used for data links with other PLCs.
Serial PLC Links exchange data among CPU Units via the built-in RS-232C
ports, with no need for special programming.
The Serial PLC Link allocations are set automatically by means of the follow-
ing PLC Setup in the Polling Unit.
• Serial PLC Link Mode
• Number of Serial PLC Link transfer words
• Maximum Serial PLC Link unit number
Addresses not used for Serial PLC Links can be used in programming, the
same as the Work Area.
Forcing Bit Status
Bits in the Serial PLC Link Area can be force-set and force-reset.
Serial PLC Link Area
Initialization
The contents of the Serial PLC Link Area will be cleared in the following
cases:
1.
When the operating mode is changed from PROGRAM mode to
RUN/MONITOR mode or vice-versa and the IOM Hold Bit is OFF
2.
When the power is cycled
3.
When the Serial PLC Link Area is cleared from the CX-Programmer
4.
When PLC operation is stopped when a fatal error other than an
FALS(007) error occurs (The contents of the Serial PLC Link Area will be
retained when FALS(007) is executed.)
4-8
DeviceNet Area
The DeviceNet Area consists of 600 words from CIO 3200 to CIO 3799.
Words in the DeviceNet Area are allocated to Slaves for DeviceNet remote I/O
communications. The DeviceNet Area is not used for the CPM1A-DRT21
Expansion Unit.
Words are allocated to Slaves using fixed allocations according to fixed allo-
cation settings 1, 2, and 3. One of these fixed areas must be selected.
CP1H CPU
Unit
CP1H CPU
Unit
CJ1M CPU
Unit
RS-232C
port
RS-232C
port
Serial PLC Link
Serial PLC
Link Area
RS-232C
port
Area
Output Area
(master to slaves)
Input Area
(slaves to master)
Fixed Allocation Area 1
CIO 3200 to CIO 3263
CIO 3300 to CIO 3363
Fixed Allocation Area 2
CIO 3400 to CIO 3463
CIO 3500 to CIO 3563
Fixed Allocation Area 3
CIO 3600 to CIO 3663
CIO 3700 to CIO 3763
Содержание CP1H CPU UNITS - PROGRAMMING 05-2007
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Страница 34: ...xxxiv Conformance to EC Directives 6...
Страница 174: ...140 CP series Expansion I O Unit Wiring Section 3 6...
Страница 370: ...336 Analog I O XA CPU Units Section 5 5...
Страница 552: ...518 Trouble Shooting Section 8 7...
Страница 595: ...561 Sample Application Section 9 12 Network Settings Network Tab Network Settings Driver Tab...
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Страница 642: ...608 Standard Models Appendix A...
Страница 643: ...609 Appendix B Dimensions Diagrams X XA and Y CPU Units 90 100 110 140 150 8 85 Four 4 5 dia holes...
Страница 652: ...618 Dimensions Diagrams Appendix B...
Страница 745: ...711 Connections to Serial Communications Option Boards Appendix F Connecting to Unit...
Страница 746: ...712 Connections to Serial Communications Option Boards Appendix F...
Страница 776: ...742 PLC Setup Appendix G...
Страница 778: ...744 Specifications for External Power Supply Expansion Appendix H...
Страница 786: ...752 Revision History...