Omron SYSMAC CS1W-SCB41-V1 Operation Manual page 94

Component Names and Functions
Terminating Resistance
Switch: TERM
2-Wire or 4-Wire Switch:
WIRE
External Dimensions
CS1W-SCB21-V1
SCB21-V1
2. The shell is connected to the ground terminal (GR) of the Power Supply
Unit inside of the Serial Communications Board. Therefore, the cable
shield can be grounded by grounding the GR of the Power Supply Unit.
3. With SDA/B or RDA/B, the signal polarity may be reversed by the remote
device. Be sure to check the polarity before wiring.
Applicable Connectors
Plug: XM2A-0901 (OMRON) or equivalent
Hood: XM2S-0911-E (OMRON) or equivalent
One plug and one hood are provided for each port.
Recommended Cables
CO-HC-ESV-3P × 7/0.2 (manufactured by Hirakawa Hewtech Corp.)
Cable length: 500 m max. (The total combined cable length is 500 m max. T-
branch lines must be a maximum of 10 m long.)
The terminating resistance switch is provided on the CS1W-SCB41-V1 only.
When an RS-422/485 port is used, set the switch to ON if the Serial Commu-
nications Board is on the end of the transmission line. Refer to Section 3
Installation and Wiring for the ON/OFF settings.
Label
TERM Terminating
resistance switch
Note The status of terminating resistance setting can be monitored in the words
allocated in the CIO Area. For details, refer to 2-3 I/O Memory Allocations.
The 2-wire or 4-wire switch is provided on the CS1W-SCB41-V1 only.
When an RS-422/485 port is used, set the switch to "2" when 2-wire connec-
tions are used, and set the switch to "4" when 4-wire connections are used.
For details, refer to Section 3 Installation and Wiring.
Label
WIRE 2-wire or 4-wire
switch
CS1W-SCB41-V1
130
SCB41-V1
Name Settings
ON: Terminating
resistance ON
OFF: Terminating
resistance OFF
Name Settings
2: 2-wire
4: 4-wire
Mounted in the CPU Unit
Section 2-1
Factory setting
OFF: Terminating
resistance OFF
Factory setting
2: 2-wire
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