597
Connections to Serial Communications Option Boards
Appendix F
1:N, 4-wire Connections from RS-422A/485 to RS-422A/485 Ports
• Communications Mode: 1:N NT Link
Note
(1) RS-422A/485 Option Board settings:
Terminating resistance ON, 4-wire.
(2) The terminating resistant setting shown above is an example for the NT631/NT631C. The setting
method varies with the PT. Refer to the manual for you PT for details.
1:N, 2-wire Connections from RS-422A/485 to RS-422A/485 Ports
• Communications Mode: 1:N NT Link
Note
(1) RS-422A/485 Option Board settings:
Terminating resistance ON, 2-wire.
(2) The terminating resistant setting shown above is an example for the NT631/NT631C. The setting
method varies with the PT. Refer to the manual for you PT for details.
CPU Unit
Pin
Signal
Signal
PT
Terminal block or
D-sub connector
FG
Terminal block
RS-422A
/485
Interface
Short bar
Signal
PT
Terminal block or
D-sub connector
FG
RS-422A
/485
interface
(See note 2.)
RS-422A
/485
Option Board
CPU Unit
Pin
Signal
Signal
PT
FG
D-sub, 9-pin
connector (male)
RS-422A
/485
Interface
Short bar
Signal
PT
Terminal block
(See note 2.)
RS-422A
/485 Option
Board
RS-422A
/485
Interface
FG
Summary of Contents for CP1L-L14D Series
Page 2: ...CP1L L14D CP1L L20D CP1L M30D CP1L M40D CP1L CPU Unit Operation Manual Revised June 2007...
Page 3: ...iv...
Page 9: ...x...
Page 13: ...xiv TABLE OF CONTENTS...
Page 21: ...xxii...
Page 33: ...xxxiv Conformance to EC Directives 6...
Page 65: ...32 Function Blocks Section 1 5...
Page 153: ...120 CP CPM1A series Expansion I O Unit Wiring Section 3 6...
Page 523: ...490 Troubleshooting Unit Errors Section 9 4...
Page 531: ...498 Replacing User serviceable Parts Section 10 2...
Page 563: ...530 Auxiliary Area Allocations by Function Appendix C...
Page 611: ...578 Auxiliary Area Allocations by Address Appendix D...
Page 638: ...605 Connections to Serial Communications Option Boards Appendix F Connecting to Unit...
Page 639: ...606 Connections to Serial Communications Option Boards Appendix F...
Page 669: ...636 Index...
Page 671: ...638 Revision History...