Omron CJ1W-CIF11 — RS-232C to RS-422A / RS-485 Converter
SKU: CJ1W-CIF11USD 56.00
RS-232C D-Sub 9-pin to RS-422A / RS-485 terminal-block converter pigtail for CS/CJ CPUs and SCU RS-232C ports, 500 m, no supply needed.
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Product Overview
The Omron CJ1W-CIF11 is a small RS-232C to RS-422A / RS-485 converter pigtail for the SYSMAC CS/CJ series. Plug the captive D-Sub 9-pin head into any built-in RS-232C port on a CS/CJ CPU (CJ1H, CJ1M, CJ2H, CJ2M peripheral port or built-in RS-232C) or onto the RS-232C port of a CJ1W-SCU21-V1 / CJ1W-SCU41-V1 serial communication unit, and break out a 5-pin RS-422A or RS-485 terminal block on the output end. The converter runs up to 500 m of cable and sets 4-wire RS-422A full duplex, 4-wire RS-485 half duplex, or 2-wire RS-485 half duplex from a DIP switch on the converter body.
Why an external converter and not a slot card?
The CJ1W-CIF11 hangs off an existing RS-232C port -- it is NOT an option board that slots into the CPU. The CPU option-board slot on the CJ front face is consumed by other cards (RS-232C option board, analog I/O option board); an open RS-232C port elsewhere is the typical pickup point. The CIF11 is the right answer when the user already has an RS-232C port and needs RS-422A 1:N -- not when a slot-board is desired. For an RS-422A / RS-485 OPTION BOARD (slot-mount on CP1L / CP1H), pick the CP1W-CIF11 (the model number is similar but the form factor is different). For an isolated RS-485 option board on a CP1L / CP1H, pick the CP1W-CIF12 (note: the CP-series isolated board is a different model from the CJ1W-CIF11).
4-wire vs 2-wire DIP switch
A DIP switch on the converter body selects between 4-wire RS-422A full duplex (the typical 1:N multidrop pick), 4-wire RS-485 half duplex, and 2-wire RS-485 half duplex. Set the terminating resistor (220 ohm on / off) on the two end nodes of a multidrop chain. The converter is powered from the DTR / RTS handshake lines on the host RS-232C port -- no external 5 / 24 VDC supply is needed.
Before ordering
Confirm the host CPU has a spare RS-232C port (the CJ1M-CPU12 has one built-in, the CJ1W-SCU21-V1 has two). For 1:N multidrop wiring across multiple NS / NB HMIs or Modbus-RTU slaves, the CIF11 plus a single RS-232C port turns the host into a 1:N drop on the wire. Order one CIF11 per CPU / SCU RS-232C port converted -- the CIF11 is a passive adapter and cannot be daisy-chained.
Key Features
- RS-232C D-Sub 9-pin to RS-422A / RS-485 terminal-block converter pigtail
- Hangs off an existing RS-232C port -- no CPU option-board slot consumed, no external power supply
- 5-pin terminal block output: SDA / SDB / RDA / RDB / SHIELD
- RS-422A 4-wire full duplex OR RS-485 4-wire / 2-wire half duplex selected on the DIP switch
- Up to 500 m RS-422A / RS-485 cable run (4-wire full duplex or 2-wire half duplex)
- Built-in 220 ohm terminating resistor on / off switchable at the two end nodes
- Powered from the DTR / RTS handshake lines on the host RS-232C port -- no separate 5 or 24 VDC supply
- Compatible with CS/CJ CPU built-in RS-232C ports and CJ1W-SCU21-V1 / SCU41-V1 RS-232C ports
- Compatible with CS1W-SCU21-V1 RS-232C ports on the CS1H / CS1G backplane
- CE / RoHS approved; MADE IN JAPAN
- Distinguishing feature vs CP1W-CIF11 option board: the CJ1W-CIF11 is a converter pigtail, the CP1W-CIF11 is an option slot card
- Distinguishing feature vs CP1W-CIF12 isolated board: the CP1W-CIF12 is an isolated RS-485 option card for CP1L/CP1H slot mounting
- SKU: CJ1W-CIF11
- Series: SYSMAC option RS-232C to RS-422A / RS-485 converter
- I/O: 232 I/O
Best-Fit Applications
- 1:N multidrop RS-422A link from one CJ1M-CPU12 built-in RS-232C port to two or three NS / NB HMIs on the shop floor
- Convert the RS-232C port of a CJ1W-SCU21-V1 to RS-422A 1:N when the SCU@2 high-speed type is not needed
- Extend a third-party Modbus-RTU slave network from the CPU RS-232C port over a 500 m RS-485 cable run to a remote sensor / inverter cluster
- Bridge an older CS1H peripheral port (RS-232C) to a modern RS-485 Modbus-RTU multi-drop without rewiring the field
- Pick the NT-AL001 instead when a panel-mount converter with a status LED on the front face is preferred; the CIF11 is a captive pigtail with no field-mount option
Buying Checklist
- Pick CJ1W-CIF11 to convert one RS-232C D-Sub 9-pin port on a CS/CJ CPU or SCU to RS-422A / RS-485 1:N on the field side at up to 500 m.
- Pick CP1W-CIF11 instead for an RS-422A / RS-485 OPTION BOARD that slots into a CP1L / CP1H option board position (different model, different form factor).
- Pick CP1W-CIF12 instead for an isolated RS-485 OPTION BOARD on a CP1L / CP1H slot position when high-noise immunity is required.
- Pick the NT-AL001 instead for a panel-mount RS-422A / RS-485 link adapter with a status LED and a screw-terminal block on both ends.
- Confirm the host CPU has a free RS-232C port before ordering -- the CJ1W-CIF11 hangs off an existing port, it does not create a new one.
- Set the DIP switch to RS-422A for a 1:N multidrop HMI chain, or to 2-wire RS-485 for a Modbus-RTU multi-drop; 4-wire RS-485 is rare in the field.
Technical Specifications
| Series | SYSMAC option RS-232C to RS-422A / RS-485 converter |
|---|---|
| Model | CJ1W-CIF11 (RS-232C D-Sub 9-pin to 5-pin terminal block) |
| Function | RS-232C point-to-point to RS-422A / RS-485 multidrop converter pigtail |
| Input End | RS-232C D-Sub 9-pin male connector (plugs INTO the host port) |
| Output End | 5-pin removable terminal block: SDA / SDB / RDA / RDB / SHIELD |
| Modes | 4-wire RS-422A full duplex / 4-wire RS-485 half duplex / 2-wire RS-485 half duplex |
| Mode Selection | DIP switch on the converter body |
| Cable Distance | Up to 500 m RS-422A / RS-485 cable run |
| Terminating Resistor | 220 ohm, on / off switchable at the end nodes |
| Power | Powered from the host RS-232C DTR / RTS lines (no external supply) |
| Compatibility | CS1H / CS1G / CJ1H / CJ1M / CJ2H / CJ2M CPUs (built-in RS-232C or peripheral port); CJ1W-SCU21-V1 / SCU41-V1 RS-232C ports; CS1W-SCU21-V1 RS-232C ports |
| Approvals / Origin | CE / RoHS; MADE IN JAPAN |
Resources & Downloads
FAQ for CJ1W-CIF11
Is the CJ1W-CIF11 an option board that slots into the CJ CPU?
No. The CJ1W-CIF11 is a converter pigtail -- it has a captive D-Sub 9-pin head that plugs into an existing RS-232C port, and a 5-pin terminal block on the other end. It does not consume the CPU option-board slot. Pick the CP1W-CIF11 when an RS-422A / RS-485 OPTION BOARD is needed -- that is a different model designed for a CP1L / CP1H option board slot.
What RS-232C ports does the CJ1W-CIF11 work with?
Any built-in RS-232C D-Sub 9-pin port on a CS1H / CS1G / CJ1H / CJ1M / CJ2H / CJ2M CPU, the peripheral port of the same CPUs (the CJ1M / CJ2M peripheral port runs RS-232C at the higher baud rates), or the RS-232C port of a CJ1W-SCU21-V1 / CJ1W-SCU41-V1 / CS1W-SCU21-V1 serial communication unit. The CIF11 cannot be used with a USB port, a peripheral-only port that has been reconfigured for tool bus, or the option-board RS-232C slot on the CJ CPU when the slot is already populated with another card.
Does the CJ1W-CIF11 need an external power supply?
No. The CIF11 draws its operating power from the DTR and RTS handshake lines on the host RS-232C port -- no separate 5 or 24 VDC supply is needed and no power terminals are present on the output terminal block. The handshake lines must be enabled in the host serial-port settings (CX-Programmer / Sysmac Studio serial-port mode selection); if the host sets the port in 'no handshake' mode the converter may not power up.
Can the CJ1W-CIF11 drive two or three RS-422A multidrop drops?
Yes. Set the DIP switch on the converter body to 4-wire RS-422A full duplex, set the terminating resistor ON at the two end nodes (typically the host end and the furthest slave), and wire the SDA / SDB / RDA / RDB terminals to the matching terminals on each slave in parallel. Maximum cable run is 500 m total, and the baud rate is the same as the host RS-232C port (up to 38.4 kbps on the CJ1W-SCU21-V1 / SCU41-V1, up to 115.2 kbps on the SCU@2 high-speed type). For more than 32 drops, switch to a true RS-422A star-distribution scheme with multiple port repeaters.
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