ABB

ACS880

Also applies to: ACS880-01, ACS880-04, ACS880-07

60 minutesAdvancedModbus RTU

What You Need

USB-to-RS485 adapter

Shielded twisted pair cable (RS-485)

120 ohm termination resistors (2x) (x2)

Flowstate CL260 edge nodeIncluded in kit

Customer provides:

1
Identify fieldbus option
Check if the ACS880 has an FENA-21 (Ethernet) or FSCA-01 (RS-485 Modbus RTU) adapter installed in an option slot.
The drive's built-in EIA-485 port (X5 terminal) supports Modbus RTU without any adapter module.
2
Connect RS-485 (Modbus RTU)
Wire RS-485 A/B lines from the drive's X5 terminal (pins 22/24) to a USB-to-RS485 adapter on the edge node. Add 120 ohm termination at both ends.
3
Alternative: Ethernet module
If FENA-21 is installed, connect Cat6 from the module's RJ45 port directly to the edge node. Set IP via drive panel (parameter group 58).

1
Set Modbus parameters
Parameter 58.01 = station address (1-247). 58.02 = baud rate (19200 typical). 58.03 = parity (even). 58.04 = data bits (8).
2
Enable communication supervision
Parameter 30.01 = 1 (enable comm loss fault). 30.02 = timeout in seconds.

1
Read drive status
Read holding register 1 (status word) and register 2 (actual speed). Non-zero values confirm communication.
2
Dashboard check
Drive appears in Flowstate with speed, torque, current, and temperature readings.

Motor speed (RPM)

Output torque (%)

Output current (A)

DC bus voltage (V)

Motor temperature (C)

Drive temperature (C)

Power consumption (kW)

Run hours

Don't have Modbus RTU access?

The universal CT clamp works on any machine — 15 minutes, zero configuration.

Calculate what downtime is costing you, then get started.