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Serial Communications
Section 6-3
Configuration
1:N Connections between CP1L/CJ1M CPU Units (8 Nodes Maximum)
1:1 Connections between CP1L/CJ1M CPU Units
Specifications
Data Refresh Methods
The following two methods can be used to refresh data.
• Complete link method
• Polling Unit link method
Complete Link Method
The data from all nodes in the Serial PLC Links are reflected in both the Poll-
ing Unit and the Polled Units. (The only exceptions are the address allocated
8 nodes maximum
CP1L CPU Unit (Polling Unit)
RS-422A/485 Option Board
RS-422A/485
Shared data
CP1L CPU Unit
(Polled Unit)
CP1L CPU Unit
(Polled Unit)
CJ1M CPU Unit
(Polled Unit)
CP1L CPU Unit
(Polled Unit)
CP1L CPU Unit
(Polling Unit)
RS-232C or RS-422A/485
Shared data
CP1L CPU Unit
(Polled Unit)
CJ1M CPU Unit
(Polling Unit)
RS-232C or RS-422A/485
Shared data
Item
Specifications
Applicable serial
ports
Serial port 1 or 2. Both ports cannot be used for PLC Links at
the same time. If both ports are set for PLC Links (either as
polling node or polled node), a PLC Setup setting error (non-
fatal error) will occur and the PLC Setup Setting Error Flag
(A402.10) will turn ON.
Connection method
RS-422A/485 or RS-232C connection via RS-422A/485 or
RS-232C Option Board.
Allocated data area
Serial PLC Link Words:
CIO 3100 to CIO 3199 (Up to 10 words can be allocated for
each CPU Unit.)
Number of Units
9 Units max., comprising 1 Polling Unit and 8 Polled Units (A
PT can be placed on the same network in an 1:N NT Link, but
it must be counted as one of the 8 Polled Units.)
Link methods (data
refresh methods)
Complete link method or Polling Unit link method
Содержание CP1L-L14D Series
Страница 2: ...CP1L L14D CP1L L20D CP1L M30D CP1L M40D CP1L CPU Unit Operation Manual Revised June 2007...
Страница 3: ...iv...
Страница 9: ...x...
Страница 13: ...xiv TABLE OF CONTENTS...
Страница 21: ...xxii...
Страница 33: ...xxxiv Conformance to EC Directives 6...
Страница 65: ...32 Function Blocks Section 1 5...
Страница 153: ...120 CP CPM1A series Expansion I O Unit Wiring Section 3 6...
Страница 523: ...490 Troubleshooting Unit Errors Section 9 4...
Страница 531: ...498 Replacing User serviceable Parts Section 10 2...
Страница 563: ...530 Auxiliary Area Allocations by Function Appendix C...
Страница 611: ...578 Auxiliary Area Allocations by Address Appendix D...
Страница 638: ...605 Connections to Serial Communications Option Boards Appendix F Connecting to Unit...
Страница 639: ...606 Connections to Serial Communications Option Boards Appendix F...
Страница 669: ...636 Index...
Страница 671: ...638 Revision History...