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Part of the Omron CP-Series Compact PLCs series — see the full model table, lifecycle status and replacement parts.

Omron CP1W-CIF11 — small slot-mount option board sitting on a wooden surface, showing the green PCB with the 5-pin Phoenix-style removable terminal block on the right edge, the Omron / CP1W-CIF11 silkscreen label on the PCB, and the row of gold-plated edge connector pins on the bottom edge that plug into the CP1L / CP1H CPU option-board slot

Omron CP1W-CIF11 — RS 422A/485 Option Board

SKU: CP1W-CIF11

USD 13.00

RS-422A/485 option board for CP1L/CP1H. Half-duplex 50 m, Modbus-RTU. In stock, datasheet, China shipping.

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Product Overview

The Omron CP1W-CIF11 is an RS-422A/485 option board for the CP1L and CP1H PLC families It is manufactured by Omron Corporation. Hengyixin Automation stocks this controller in Xiamen and ships within 3-5 business days to most Asian, European, and North American ports.

Slot-mount RS-422A/485 option board for CP1L and CP1H PLCs Half-duplex, 50 m max cable, 5-pin Phoenix-style terminal block

Configuration runs in CX-Programmer under the CX-One suite.

Key Features

  • Slot-mount RS-422A/485 option board for CP1L and CP1H PLCs
  • Half-duplex, 50 m max cable, 5-pin Phoenix-style terminal block
  • Supports Host Link, Modbus-RTU master and slave, NT Link 1:1 + 1:N, Serial Gateway, Peripheral bus
  • Not compatible with the CP1E family (CP1E has no option-board slot)
  • SKU: CP1W-CIF11
  • Series: Omron CP1W option board family

Best-Fit Applications

  • Modbus-RTU master polling of a 6-inverter HVAC fan array on a CP1L-EM30DT-D, picking up drive status and fault codes into the CIO area every 200 ms
  • NT Link 1:N wiring between a CP1H-X40DR-A and three NS5-TQ10B-V2 HMIs on a filling line (one HMI per operator station)
  • Spare replacement on a packaging machine retrofitted with a CP1L-M40DR-A that has already used its built-in RS-232C for the touch-panel HMI

Buying Checklist

  • Pick the CP1W-CIF11 for a non-isolated RS-422A/485 option board on a CP1L or CP1H CPU.
  • Pick the CP1W-CIF12-V1 instead when the cabinet needs an isolated RS-485 option board.
  • Pick the CJ1W-CIF11 instead when the existing RS-232C port needs a captive-cable converter to RS-422A/485.

Technical Specifications

Manufacturer Omron Corporation (Japan)
Series Omron CP1W option board family
Model / SKU CP1W-CIF11
Function RS-422A/485 slot-mount serial option board (one port)
Compatible CPUs CP1L-L, CP1L-M, CP1L-EL, CP1L-EM, CP1H-X, CP1H-Y (NOT CP1E)
Slot Location Option Board Slot 1 or Slot 2 on the CPU top face
Communication Method Half-duplex RS-422A or RS-485 (DIP-switch selectable)
Connector 5-pin removable Phoenix-style MC1.5/5-ST-3.5 terminal block
Max Cable Run 50 m total
Isolation None; for isolation use CP1W-CIF12-V1
Supported Protocols Host Link (SYSMAC WAY), Modbus-RTU master + slave, NT Link 1:1 + 1:N, Serial Gateway, Peripheral bus
Termination Built-in 220 ohm resistor, on/off via on-board DIP switch

FAQ for CP1W-CIF11

What is the Omron CP1W-CIF11 used for?
The Omron CP1W-CIF11 adds one RS-422A or RS-485 serial port to a CP1L or CP1H PLC. Common uses are Modbus-RTU master or slave polling of inverters and smart meters, NT Link 1:N wiring to NS / NB HMIs, Host Link (SYSMAC WAY) communication with legacy Omron devices, and Serial Gateway mode for non-Omron serial equipment.
CP1W-CIF11 vs CP1W-CIF12-V1 — what is the difference?
Both are RS-485 option boards for CP1L / CP1H PLCs in the same form factor. The CP1W-CIF11 is the non-isolated standard board; the CP1W-CIF12-V1 is the isolated board. Pick the CIF12-V1 when the field wiring has long cable runs, sits on a different ground potential, or the cabinet needs to pass a high-voltage isolation test. The CIF11 is the lowest-cost pick for short cabinet-to-machine wiring where both ends share a ground.
Does the CP1W-CIF11 work with CP1E?
No. The CP1E family has no option-board slot, so the CP1W-CIF11 cannot be installed on a CP1E-N, CP1E-S, or CP1E-E CPU. The CIF11 fits the CP1L-L, CP1L-M, CP1L-EL, CP1L-EM, CP1H-X, and CP1H-Y families only.
What is the maximum cable length for CP1W-CIF11?
50 m total from the option board to the far end of the RS-422A / RS-485 trunk, per the Omron spec page at ia.omron.com/products/family/3142. For longer runs add an external RS-485 repeater, or switch to EtherNet/IP or EtherCAT as the field bus.
How do I configure the CP1W-CIF11 in CX-Programmer?
Open CX-Programmer, go to PLC Setup > Serial Port 1 or Serial Port 2 (depending on which slot the CIF11 occupies), and pick the host link or Modbus-RTU mode. The DIP switch on the board selects 4-wire RS-422A vs 2-wire RS-485 and the termination resistor -- set both before powering the CPU.

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