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Serial Communications
Section 6-1
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
(A40210) 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
Summary of Contents for Sysmac CP1H
Page 2: ......
Page 3: ...CP1H X40D CP1H XA40D CP1H Y20DT D CP1H CPU Unit Operation Manual Revised October 2014...
Page 4: ...iv...
Page 10: ...x...
Page 18: ...xviii...
Page 22: ...xxii...
Page 34: ...xxxiv Conformance to EC Directives 6...
Page 76: ...42 Function Blocks Section 1 5...
Page 176: ...142 CP series Expansion I O Unit Wiring Section 3 6...
Page 372: ...338 Analog I O XA CPU Units Section 5 5...
Page 578: ...544 Trouble Shooting Section 8 7...
Page 622: ...588 Sample Application Section 9 12 Network Settings Network Tab Network Settings Driver Tab...
Page 668: ...634 Standard Models Appendix A...
Page 744: ...710 Auxiliary Area Allocations by Address Appendix D...
Page 771: ...737 Connections to Serial Communications Option Boards Appendix F Connecting to Unit...
Page 772: ...738 Connections to Serial Communications Option Boards Appendix F...
Page 800: ...766 Specifications for External Power Supply Expansion Appendix H...
Page 806: ...772 Index W Work Area 165 work bits 165 work words 165 write protection 379...
Page 808: ...774 Revision History...
Page 809: ......