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574
Connections to Serial Communications Option Boards
Appendix F
• If the I/O wiring and power cables must be placed in the same duct, they must be shielded from each other
using grounded steel sheet metal.
2-Wire and 4-Wire Connections
The transmission circuits for 2-wire and 4-wire connections are different, as shown in the following diagram.
Note
(1) Use the same transmission circuit (2-wire or 4-wire) for all nodes.
(2) Do not use 4-wire connections when the 2/4-wire switch on the Board is set to 2-wire.
NT-AL001-E Link Adapter Settings
The NT-AL001-E Link Adapter has a DIP switch for setting RS-422A/485 communications conditions. When
connecting the Serial Communications Option Board, refer to the DIP switch settings shown in the following
table.
Note When connecting to a CP-series CPU Unit, turn OFF pin 5 and turn ON pin 6.
Communications
cables
PLC power supply
and general control
circuit wiring
Power lines
200 mm min.
Ground to 100
Ω
or less.
Steel sheet metal
Example of 4-Wire
Connections
Example of 2-Wire
Connections
2/4-wire switch
(DPDT)
Option Board
2/4-wire switch
(DPDT)
Option Board
Not connected
Other Unit
Other Unit
Other Unit
Other Unit
Pin
Function
Factory setting
1
Not used. Always set this pin to ON.
ON
2
Built-in terminating resistance setting
ON: Connects terminating resistance.
OFF: Disconnects terminating resistance.
ON
3
2/4-wire setting
2-wire: Set both pins to ON.
4-wire: Set both pins to OFF.
OFF
4
OFF
5
Transmission mode (See note.)
Constant transmission: Set both pins to OFF.
Transmission performed when CTS signal in RS-232C interface is at high level:
Set pin 5 to OFF and pin 6 to ON.
Transmission performed when CTS signal in RS-232C interface is at low level:
Set pin 5 to ON and pin 6 to OFF.
ON
6
OFF
Содержание CP1H-CPU - 05-2006
Страница 1: ...OPERATION MANUAL CP1H CPU Unit SYSMAC CP Series CP1H X40D CP1H XA40D CP1H Y20DT D Cat No W450 E1 02...
Страница 2: ...CP1H X40D CP1H XA40D CP1H Y20DT D CP1H CPU Unit Operation Manual Revised May 2006...
Страница 3: ...iv...
Страница 11: ...xii TABLE OF CONTENTS...
Страница 15: ...xvi...
Страница 19: ...xx...
Страница 31: ...xxxii Conformance to EC Directives 6...
Страница 71: ...40 Function Blocks Section 1 5...
Страница 133: ...102 Computing the Cycle Time Section 2 7...
Страница 169: ...138 CPM1A Expansion I O Unit Wiring Section 3 6...
Страница 411: ...380 Clock Section 6 8...
Страница 519: ...488 Replacing User serviceable Parts Section 10 2...
Страница 527: ...496 Standard Models Appendix A...
Страница 535: ...504 Dimensions Diagrams Appendix B...
Страница 628: ...597 Connections to Serial Communications Option Boards Appendix F Connecting to Unit...
Страница 629: ...598 Connections to Serial Communications Option Boards Appendix F...
Страница 659: ...628 PLC Setup Appendix G...
Страница 665: ...634 Index work words 159 write protection 370...
Страница 667: ...636 Revision History...