Runs two independent RS-232-C communication channels from one FA-M3 module position.
Key Information
F3RZ82-0F is Yokogawa’s FA-M3 ladder communication module with two RS-232-C ports. Yokogawa states that it can be used with all FA-M3 CPU modules.
The two ports operate independently. An error on one port does not affect operation of the other port.
Both ports are non-isolated and use D-sub 9-pin connectors, so grounding, cable routing and the 15 m distance limit matter during installation.
Functions
Supports a broad selectable baud-rate range up to 115.2 kbps.
Allows input relays to be assigned as interrupts for ladder communication tasks.
Works with all FA-M3 CPU modules according to Yokogawa’s user manual.
Specifications
| Manufacturer | Yokogawa |
|---|---|
| Exact model | F3RZ82-0F |
| System family | FA-M3 |
| Interface | EIA RS-232-C compliant |
| Number of ports | 2, non-isolated |
| Connector | D-sub 9-pin |
| Maximum transmission rate | 115.2 kbps |
| Selectable rates | 300 / 600 / 1200 / 2400 / 4800 / 9600 / 14400 / 19200 / 28800 / 38400 / 57.6k / 76.8k / 115.2k bps |
| Maximum transmission distance | 15 m |
| Connection | Point-to-point |
| Transmission mode | Full duplex / half duplex |
| Synchronization | Start-stop |
| Current consumption | 350 mA |
| Dimensions | 28.9 W × 100 H × 83.2 D mm |
| Operating temperature | 0 to 55 °C |
| Storage temperature | -20 to 75 °C |
| Humidity | 10 to 90% RH, non-condensing |
Installation
- Use shielded, documented serial cabling within the 15 m limit and keep it separated from noisy power wiring.
- Match baud rate, framing, duplex mode and protocol settings at both ends.
- Record D-sub pin assignments before removing an existing cable.
- Test Port 1 and Port 2 independently because they are separate operating paths.
Lifecycle
- Maintain the FA-M3 project and serial settings with the spare record.
- Inspect D-sub hardware, shields and connector strain relief during service.
- Do not confuse F3RZ82-0F with the single-port F3RZ81-0F or RS-422/485 F3RZ91-0F.
- Verify both communication partners after exchange.
About IndustryParts
https://www.industryparts.com/Two serial channels stay independently documented
IndustryParts records F3RZ82-0F with both port assignments, communication settings and connected-device identities.
- Two ports mapped
- Baud and framing retained
- Cable pinouts requested
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FAQ
Can F3RZ82-0F replace F3RZ81-0F without a project change?
Do not assume direct interchange. F3RZ82-0F has two ports and the installed slot, ladder program, cable allocation and I/O mapping must be reviewed.
What communication evidence should accompany an F3RZ82-0F enquiry?
Provide the full label, FA-M3 CPU model, slot, port assignments, baud and framing settings, D-sub pinout and the connected device models.
How should intermittent faults on F3RZ82-0F be investigated?
Check the affected port’s cable length, shield, grounding, connector pins, framing settings and partner device. The independent second port can help isolate the scope of the fault.
Is an external isolator ever relevant to F3RZ82-0F?
Both onboard RS-232-C ports are non-isolated. Review site grounding and potential differences; use only an approved external isolation arrangement where the application requires it.
What proves F3RZ82-0F is ready after replacement?
Confirm both ports at the configured rates, message integrity, independent error handling, correct ladder data exchange and clean CPU/module diagnostics.
