Remote IO — Yaskawa MP/Sigma Controller Connection

Overview

System setup — SMX-RNS20 reading Modbus TCP data from Yaskawa IO modules (no PLC required)

Yaskawa MP-series machine controllers (MP2000, MP3000) and some Sigma servo drive configurations support Modbus TCP and/or Memobus/Modbus protocol. This guide covers connecting via Modbus TCP.

Yaskawa Controller Configuration

• In MotionWorks IEC or the MP-series configuration tool, assign a static IP to the controller’s Ethernet module.
• Enable the Modbus TCP Server (Memobus slave) function on the Ethernet card. Default port: 502.
• Note the register addresses (MW, MB, etc.) you want to monitor.
• The Yaskawa register mapping follows standard Modbus: MW000 = Holding Register 0, MB000 = Coil 0.

SMX-RNS20 Remote IO Configuration

1. Log in to the SMX-RNS20 web interface → Remote IO → Connections → Add Connection.
2. Select Driver: Modbus TCP. Enter the Yaskawa controller IP, port 502, Unit ID 1.
3. Add your data points. For holding registers use FC03; for status bits use FC01 (coils).
4. Set the polling interval (e.g., 5 seconds) and save.
5. Check Remote IO → Monitor to confirm data is being read.

Screenshots — Remote IO App

Step 1 — Add Communication Module in the Driver page

Step 2 — Enter tag information on the Tag page

Step 3 — Driver status confirming connection to Yaskawa module

Step 3 — Tag status page with live values from Yaskawa IO