Omron CJ2 - Expanded System Configuration; Serial Communications

2 Basic System Configuration and Devices
2-22
CJ2 CPU Unit Hardware User’s Manual
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 the CJ2 CPU Unit Software
User’s Manual (Cat. No. W473).
Note Protocol macros are supported only for Serial Communications Units.
2-2-1 Serial Communications
P
E
RIP
HER
A
L
ER
R
/
ALM
R
U
N
INH
C
O
M
M
P
RP
H
L
CONTROLLER
P
ROGRAM
M
A
BLE
PO
R
T
OP
E
N
BUSY
MCPWR
BKUP
CPU64-EIP
CJ2H
SYSMAC
N
S
M
S
C
O
M
M
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