Omron CJ2 CPU UNIT - 2-2 Expanded System Configuration

2-27
2 Basic System Configuration and Devices
CJ2 CPU Unit Hardware User’s Manual
2-2 Expanded System Configuration
2
2-2-1 Serial Communications
2-2 Expanded System Configuration
This section describes the system configurations that can be connected by using the serial port that is
built into the CJ2 CPU Unit, along with Communications Units and other Configuration Units.
This expanded system can be connected via the CJ2 CPU Unit's built-in serial communications port or
a Serial Communications Unit.
Various protocols, including Host Link and NT Link, can be used with the serial communications port. A
particular protocol can be supported by switching the mode of the serial communications port.
For details on the serial communications modes that are supported, refer to 11-2 Serial Communica-
tions in the CJ2 CPU Unit Software User’s Manual (Cat. No. W473).
Note Protocol macros are supported only for Serial Communications Units.
Precautions for Correct UsePrecautions for Correct Use
A Serial Option Board is required to use a serial communications for the CJ2M-CPU3@.
Refer to Serial Option Boards on page 2-7 for information on Serial Option Boards.
2-2-1 Serial Communications
PERIP
HERAL
ERR
/ ALM
R
UN
INH
C
OM
M
PRP
HL
CONTROLLER
PROGRAM
M
A
BLE
PORT
OPE
N
BUSY
MCPWR
BKUP
CPU64-EIP
CJ2H
SYSMAC
N
S
MS
C
O
MM
1
0
M
1
0
0M
2
ON
4
TERM
RD2
SD2
RDY
NO.
UNIT
ERH
OFF
WIRE
ERC
RUN
SCU41
RD1
TER1
SD1
PORT1
(RS422
/485)
PORT2
2
ON
4
TERM
RD2
SD2
RDY
NO.
UNIT
ERH
OFF
WIRE
ERC
RUN
SCU41
RD1
TER1
SD1
PORT1
(RS422
/485)
PORT2
2
ON
4
TERM
RD2
SD2
RDY
NO.
UNIT
ERH
OFF
WIRE
ERC
RUN
SCU41
RD1
TER1
SD1
PORT1
(RS422
/485)
PORT2
15 Serial
Communications
Units max.
CPU Unit
Serial port (RS-232C)
Communications Port 1
Communications Port 2