Recommended Wiring Methods - Omron SYSMAC CS1D-PD Series Operation Manual

Connecting to the RS-232C Port on the CPU Unit

Recommended Wiring Methods

We recommend the following wiring methods for RS-232C, especially in environment prone to noise.
1. Use shielded twisted-pair cable for communications cables. The following RS-232C cables are recommend-
ed.
UL2464 AWG28×5P IFS-RVV-SB (UL approved)
AWG28×5P IFVV-SB (not UL approved)
UL2464-SB (MA) 5P×28AWG (7/0.127) (UL approved)
CO-MA-VV-SB 5P×28AWG (7/0.127) (not UL approved)
2. Use a twisted-pair cable for each signal line and SG (signal ground) to connect the CPU Unit to a commu-
nications partner. Also, bundle all the SG lines at the Board/Unit and at the other device and connect them
together.
3. Connect the shield line of the communications cable to the hood (FG) of the RS-232C connector at the
Board/Unit. Also, ground the protective earth (GR) terminal of the Power Supply Units on the CPU Rack and
the Expansion Racks to a resistance of 100 Ω or less. The following example shows connecting SD-SG,
RD-SG, RS-SG, and CS-SG for Serial Communications Mode using a twisted-pair cable using the periph-
eral bus.
CPU Unit
Pin Signal
No.
name
2 SD
3 RD
4 RS
5 CS
9 SG
Shell FG
1 FG
Note The hood (FG) is internally connected to the protective earth (GR) terminal on the Power Supply Unit
through the CPU Rack or Expansion Rack. FG can thus be connected by connecting the protective
earth (GR) terminal on the Power Supply Unit. The hood (FG) is also electrically connected to pin 1
(FG), but the connection resistance between the shield and the FG is smaller for the hood. To reduce
contact resistance between the hood (FG) and the FG, connect the shield both to the hood (FG) and to
pin 1 (FG).
608
Model
CPU Unit
DPL01
RUN DPL STATUS
ACTIVE
ERR/ALM
L
CPU STATUS
INH BKUP
ACTIVE
R
PRPHL COMM CPU STATUS
LEFT CPU
SYSMAC
CS1D-CPU67H
PROGRAMMABLE CONTROLLER
RIGHT CPU
MCPWR BUSY
OPEN
DPL SW
ON
PERIPHERAL
INIT.
SW
PORT ON
DUPLEX
Communications partner
Signal
name
RD
SD
CS
RS
SG
FG
Shield
Power Supply Unit
PA207R
POWER POWER
RUN
ERR/ALM
INH BKUP
PRPHL COMM
SYSMAC
CS1D-CPU67H
USE
PROGRAMMABLE CONTROLLER
NO USE
L2/N
AC100V-120V/
AC2100-240V/
INPUT
USE
MCPWR BUSY
L1
NO USE
OPEN
100-120
CLOSE
200-240
ON OFF
SPL DPL OPEN
ACT. ACT.
LEFT RIGHT
PERIPHERAL
RUN
OUT450V
DC24V
PRPHL
2A RESISTIVE
COMM
A39512
RSV
PORT
Shield and GR connected
internally.
Ground to 100 Ω
or less
The hood will be grounded if
the GR terminal is grounded.
Arrows indicate signal directions.
Appendix F
Manufacturer
Fujikura Ltd.
Hitachi Cable, Ltd.
PA207R
L2/N
AC100V-120V/
AC2100-240V/
INPUT
L1
100-120
GR
CLOSE
200-240
OPEN
RUN
OUT450V
DC24V
2A RESISTIVE
SG signal line
SG signal lines
bundled together
Aluminum foil