368
Serial Communications
Section 6-3
6-3-2
No-protocol Communications
No-protocol communications enable sending and receiving data using the
TRANSMIT (TXD(236)) and RECEIVE (RXD(235)) instructions without using
a protocol and without data conversion (e.g., no retry processing, data type
conversion, or process branching based on received data). The communica-
tions mode for the serial port must be set for no-protocol communications in
the PLC Setup.
No-protocol communications are used to send data in one direction to or from
standard devices that have an RS-232C or RS-422A/485 port using TXD(236)
or RXD(235).
Peripheral
bus (toolbus)
CX-Programmer
Provides high-speed communi-
cations with the CX-Program-
mer.
OK
OK
1:1 NT Links OMRON PTs (Programmable Terminals)
Enables data exchange with a
PT without communications
programming in the CPU Unit.
(The 1:N NT Link protocol is
used for communications even
for 1:1 connections.)
OK
OK
1:1 Links
Enables linking data in a 64-
word Link Area between two
PLCs connected by an RS-
232C cable.
OK
OK
Protocol
Connected devices
Description
Serial
port 1
Serial
port 2
Personal computer running
the CX-Programmer
RS-232C
Peripheral bus (toolbus)
NS-series PT
RS-232C
NT Link
1:1 Link
CP1L CPU Unit
C-series CPU Unit
CPM1A-V1
CPM2
@
CQM1H
C200HX/HG/HE
RS-232C
CP1L CPU Unit
Summary of Contents for CP1L CPU UNIT - 03-2009
Page 1: ...Cat No W462 E1 06 CP1L CPU Unit SYSMAC CP Series CP1L L_0D_ CP1L M_0D_ OPERATION MANUAL...
Page 2: ......
Page 4: ...iv...
Page 10: ...x...
Page 22: ...xxii...
Page 34: ...xxxiv Conformance to EC Directives 6...
Page 70: ...36 Function Blocks Section 1 5...
Page 584: ...550 Trouble Shooting Section 8 7...
Page 627: ...593 Sample Application Section 9 12 Network Settings Network Tab Network Settings Driver Tab...
Page 630: ...596 Sample Application Section 9 12...
Page 654: ...620 Troubleshooting Unit Errors Section 11 4...
Page 662: ...628 Replacing User serviceable Parts Section 12 2...
Page 668: ...634 Standard Models Appendix A...
Page 698: ...664 Auxiliary Area Allocations by Function Appendix C...
Page 746: ...712 Auxiliary Area Allocations by Address Appendix D...
Page 773: ...739 Connections to Serial Communications Option Boards Appendix F Connecting to Unit...
Page 774: ...740 Connections to Serial Communications Option Boards Appendix F...
Page 806: ...772 Index...
Page 808: ...774 Revision History...