Omron SYSMAC CS1W-SCB41-V1 User Manual

115
RS-232C and RS-422A/485 Wiring Section 3-4
2. Combine signal wires and SG (signal ground) wires in a twisted-pair cable.
At the same time, bundle the SG wires to the connectors on the Serial
Communications Board/Unit and the remote device.
3. Connect the shield of the communications cable to the Hood (FG) terminal
of the RS-232C connector on the Serial Communications Board/Unit. At
the same time, ground the ground (GR) terminal of the Power Supply Unit
on the CPU Rack or CS Expansion Rack to 100
Ω or less.
4. A connection example is shown below.
Example: Twisted-pair Cable Connecting SD-SG, RD-SG, RTS-SG, and
CTS-SG Terminals
Note The Hood (FG) is internally connected to the ground terminal (GR) on the
Power Supply Unit via the CPU Rack or Expansion Rack. Therefore, FG is
grounded by grounding the ground terminal (GR) on the Power Supply Unit.
Although there is conductivity between the Hood (FG) and pin 1 (FG), connect
the Hood (FG) to the shield because the Hood (FG) has smaller contact resis-
tance with the shield than pin 1 (FG), and thus provides better noise resis-
tance.
Serial
Communications
Board/Unit
Remote device
Actual Wiring Example
SG signal wires
Bundle the SG wires.
Aluminum foil
XM2S-0911-E
Pin Signal
Hood
Shield
Signal
Twist the shaded lines to make
them thinner and connect to Pin
No. 1 (FG). Cover this section
with heat-shrink tube to avoid
contact with other sections.
SD
RD
RTS
CTS
SG
FG
FG
RD
SD
CTS
RTS
SG
FG
POWER
PA205R
DC24V
AC240V
OUTPUT
RUN
INPUT
AC100-240V
L2/N
L1
CONTROLLER
CJ1G-CPU44
SYSMAC
PROGRAMMABLE
ERR/ALM
RUN
COMM
INH
PRPHL
OPEN
PERIFHERAL
BUSY
MCPWR
PORT
2
ON
4
TERM
ERC
RUN
RD2
SCU41
RD1
TER1
SD2
RDY
NO.
UNIT
ERH
SD1
PORT1
(RS422
/485)
OFF
WIRE
PORT2
0
1
2
3
4
5
6
7
8
9
A
B
C
D
E
F
GR
SYSMAC CS1G
PROGRAMABLE CONTROLLER
CPU42
OPEN
OPEN
PERIPHERAL
PORT (RS-232C)
BUSY
RUN
ERR/ALM
INH
PRPHL/COMN
MCPWR
GR
POWER
PA204S
L2/N
L1
AC100V-120V/
AC2100-240V/
INPUT
DC24V/0.8A
OUTPUT
100-200
CLOSE
200-240
OPEN
SCU21
PORT1
PORT2
RUN
ERC
SD1
RD1
RDY
ERH
SD2
RD2
E
F
0
1
2
Serial Communications Board/Unit
Power Supply Unit
Hood and GR are
internally connected.
Ground to 100 Ω or less
Grounding the GR terminal
grounds the Hood (FG).
CS-series PLC
CJ-series PLC
Power Supply Unit
Serial
Communications
Unit
Hood and GR are
internally
connected.
Grounding the GR
terminal grounds
the Hood (FG).
Ground to
100
Ω or less.

Omron SYSMAC CS1W-SCB41-V1 Specifications

General

Brand	Omron
Model	SYSMAC CS1W-SCB41-V1
Category	Network Hardware
Language	English