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346
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.
(Remote programming through
modems is not supported.)
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
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...