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359
Serial Communications
Section 6-3
Procedure
The Serial PLC Links operate according to the following settings in the PLC
Setup in the Polling Unit and Polled Units.
Settings at the Polling Unit
1,2,3...
1.
Set the serial communications mode of serial port 1 or 2 to Serial PLC
Links (Polling Unit).
2.
Set the link method to the Complete Link Method or Polling Unit Link Meth-
od.
3.
Set the number of link words (up to 10 words for each Unit).
4.
Set the maximum unit number in the Serial PLC Links (0 to 7).
Settings at the Polled Units
1,2,3...
1.
Set the serial communications mode of serial port 1 or 2 to Serial PLC
Links (Polled Unit).
2.
Set the unit number of the Serial PLC Link Polled Unit.
PLC Setup
Settings at the Polling Unit
Settings at the Polled Unit
Note
Both serial 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 set-
ting error (non-fatal error) will occur and the PLC Setup Setting Error Flag
(A402.10) will turn ON. If PLC Links is set for one serial port, set the other
serial port to a different mode.
Item
Set value
Default
Refresh timing
Serial port
1 or 2
Mode: Communications mode
PC Link (Master): PLC Link Polling Unit
Host Link
Every cycle
Baud: Baud rate
38,400 bps, 115,200 bps
9,600 bps
PC link mode: PLC Link method
ALL: Complete link method
Masters: Polling Unit method
ALL
Link words: No. of link words
1 to 10 words
10 words
PC Link Unit No.: Max. unit No.
0 to 7
0 hex
Item
Set value
Default
Refresh timing
Serial port
1 or 2
Mode: Communications mode
PC Link (Slave): PLC Link Polled Unit
Host Link
Every cycle
Baud: Baud rate
38,400 bps, 115,200 bps
9,600 bps
Unit number
0 to 7
0
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...