Omron CJ2 CPU UNIT SOFTWARE User Manual

11-15
11 Programming Devices and Communications
CJ2 CPU Unit Software User’s Manual
11-2 Serial Communications
11
11-2-1 Overview of Serial Communications
11-2 Serial Communications
The serial communications port mode (protocol) can be switched in the CPU Unit's PLC Setup.
Depending on the protocol selected, the following systems can be configured.
The following protocols support serial communications.
*1 Serial Communications Unit with unit version 1.2 or later only.
11-2-1 Overview of Serial Communications
Protocols
Protocol
(Serial Communications Mode)
Main connection Use
Applicable commands, commu-
nications instructions
Peripheral bus (toolbus)
(RS-232C port on CPU Unit only.
Not supported for Serial Communi-
cations Unit.)
CX-Programmer Communications between Program-
ming Devices and the PLC from the
computer.
None
Host Link (SYSMAC WAY) slave Personal computer
OMRON Programmable
Te rminals
Communications between the Host
computer and the PLC. Commands
can be sent to a computer from the
PLC.
Host Link commands/ FINS com-
mands. Commands can be sent
to a computer from the PLC.
No-protocol
*1
General-purpose external
devices
No-protocol communications with
general-purpose devices.
TXD(236) instruction, RXD(235)
instruction, TXDU(256) instruc-
tion, RXDU(255) instruction
DTXDU (262) instruction
DRXDU (261) instruction
NT Links (1: N) OMRON Programmable
Te rminals
High-speed communications with
Programmable Terminals via direct
access.
None
Serial Gateway OMRON Component
PLC
Converts FINS commands that are
received into CompoWay/F, Modbus,
or Host Link protocols, and then
transmits the converted command to
the serial line.
---
CompoWay/F Master
*1
CompoWay/F slave Converts FINS commands (encapsu-
lated CompoWay/F commands)
received at the serial port into Com-
poWay/F commands.
FINS command
2803 hex received
(including sending FINS com-
mand using CMND(490))
Modbus Master
*1
(Serial Communications Unit
only. Not supported for RS-
232C port on CPU Unit.)
Modbus slave Converts FINS commands (encapsu-
lated Modbus commands) received at
the serial port into Modbus com-
mands.
FINS command
2804 hex or 2805 hex received
(including sending FINS com-
mand using CMND(490))
Host Link FINS (SYSWAY) Mas-
ter
*1
(Serial Communications Unit
only. Not supported for RS-
232C port on CPU Unit.)
Host Link FINS (SYSWAY)
slave (PLC)
Converts FINS commands into FINS
commands encapsulated in Host Link
Any FINS command received
except those sent to serial port
(including sending FINS com-
mand using CMND(490))
Protocol macro
(Serial Communications Unit only.
Not supported for RS-232C port on
CPU Unit.)
General-purpose external
devices
Sending and receiving messages
(communications frames) according
to the communications specifications
of external devices. (SYSMAC-PST is
used to create protocols by setting
various parameters.)
PMCR(260) instruction
Serial PLC Links (CJ2M CPU Units
only)
OMRON PLCs (CJ2M,
CJ1M, CP1H, CP1L, and
CP1E CPU Units)
Up to 10 words of data per Unit can
be shared between up to nine CPU
Units (one Polling Unit and up to eight
Polled Units).
None

Omron CJ2 CPU UNIT SOFTWARE Specifications

General

Brand	Omron
Model	CJ2 CPU UNIT SOFTWARE
Category	Software
Language	English