Keyence FD‑EC Flowmeter

Supported Devices

Device Type	Variants	Modbus TCP (Ethernet)	RS485	Curtailment
Keyence FD‑EC Series	FD‑ECA1 / FD‑ECA1C / FD‑ECA0 (Amplifier units)	✅	❌	❌

The Sofar EMS communicates with the FD‑EC amplifier via Ethernet (Modbus TCP).
Connect the Ethernet cable from the amplifier unit to any free controller network port or network switch on the same LAN.

RS485 Wiring

For correct RS485 wiring: follow the RS485 wiring guidelines.
If the wiring shown in the table below is incorrect, please let us know.
There is no general industry consensus on the use of A and B for RS485 polarity, so the naming may be counterintuitive for some devices.

Device	Sofar EMS model OM1	Sofar EMS model IG8	RS485-USB converter	RS485-Ethernet converter
Ethernet connection	RS485 A	RS485_POS	RS485 A	TX+
TCP Port 502	RS485 B	RS485_NEG	RS485 B	TX-
Category 5e or 6 cable	RS GND	GND	Not available	G

NOTE: RS485 Device Addresses

You MUST give each device a unique address on the RS485 bus. Check the device manual for instructions.
Use lower addresses first (1, 2, ...) because the Sofar EMS will find them faster!
For each device, it is generally recommended to keep the factory-default baud rate, parity, and stop bits. The Sofar EMS will scan those first.

1. Add the Device

On the Sofar EMS screen or web interface, open
Settings → Devices → Add Device.
Select “Keyence Flowmeter protocol” from the device list.
Choose TCP as the connection type.

2. Enter Connection Details

In the connection window, enter:
- IP address – the address of the FD‑EC amplifier (for example: 192.168.1.120).
- TCP port – 502 (default).
- Slave address – 1 (fixed value for this model).
Save to return to the device list.

Tip

To find or set the amplifier’s IP address, use the MP‑F Monitor software or the setup menu on the amplifier display.
Keep your controller and the FD‑EC on the same local subnet.

3. Configure Data Channels

Open the Keyence Flowmeter device settings screen.
Set the number of connected flow sensors (for example, 1 or 2).
For each sensor, enable or disable data channels such as:
- Flow rate (L/min)
- Total water usage (L)
- Temperature (°C)
- Heat power (kW)
- Energy consumption (kWh)
Save your changes and press Apply Configuration.

Warning

Avoid polling the same FD‑EC unit from multiple controllers or software tools simultaneously.
Only one active Modbus‑TCP connection is supported at a time.

Last updated August 24, 2026

Device Type

Variants

Modbus TCP (Ethernet)

RS485

Curtailment

Keyence FD‑EC Series

FD‑ECA1 / FD‑ECA1C / FD‑ECA0 (Amplifier units)

✅

❌

Wiring

RS485 Wiring

For correct RS485 wiring: follow the RS485 wiring guidelines.
If the wiring shown in the table below is incorrect, please let us know.
There is no general industry consensus on the use of A and B for RS485 polarity, so the naming may be counterintuitive for some devices.

Device	Sofar EMS model OM1	Sofar EMS model IG8	RS485-USB converter	RS485-Ethernet converter
Ethernet connection	RS485 A	RS485_POS	RS485 A	TX+
TCP Port 502	RS485 B	RS485_NEG	RS485 B	TX-
Category 5e or 6 cable	RS GND	GND	Not available	G

NOTE: RS485 Device Addresses

You MUST give each device a unique address on the RS485 bus. Check the device manual for instructions.
Use lower addresses first (1, 2, ...) because the Sofar EMS will find them faster!
For each device, it is generally recommended to keep the factory-default baud rate, parity, and stop bits. The Sofar EMS will scan those first.

Software Configuration (Installer Menu)

On the Sofar EMS screen or web interface, open
Settings → Devices → Add Device.

Select “Keyence Flowmeter protocol” from the device list.

Choose TCP as the connection type.

In the connection window, enter:

IP address – the address of the FD‑EC amplifier (for example: 192.168.1.120).
TCP port – 502 (default).
Slave address – 1 (fixed value for this model).

Save to return to the device list.

Tip

To find or set the amplifier’s IP address, use the MP‑F Monitor software or the setup menu on the amplifier display.
Keep your controller and the FD‑EC on the same local subnet.

Open the Keyence Flowmeter device settings screen.

Set the number of connected flow sensors (for example, 1 or 2).

For each sensor, enable or disable data channels such as:

Flow rate (L/min)
Total water usage (L)
Temperature (°C)
Heat power (kW)
Energy consumption (kWh)

Save your changes and press Apply Configuration.

Warning

Avoid polling the same FD‑EC unit from multiple controllers or software tools simultaneously.
Only one active Modbus‑TCP connection is supported at a time.

Last updated August 24, 2026

Keyence FD‑EC Flowmeter

Supported Devices

Wiring

RS485 Wiring

NOTE: RS485 Device Addresses

Software Configuration (Installer Menu)

1. Add the Device

2. Enter Connection Details

Tip

3. Configure Data Channels

Warning

On this page

Keyence FD‑EC Flowmeter

Supported Devices

Wiring

RS485 Wiring

NOTE: RS485 Device Addresses

Software Configuration (Installer Menu)

1. Add the Device

2. Enter Connection Details

Tip

3. Configure Data Channels

Warning

On this page