Free Modbus template: Wago Pro 2 Power supply | ModbusCloud
Modbus RTU
Wago Pro 2 Power supply
Wago
Monitors WAGO Pro 2 power supply output via Modbus RTU communication module.
Overview
This template reads output voltage, output current, output power, and device state from Wago Pro 2 power supplies over Modbus RTU. It requires the optional 2789-9015 communication module. Compatible models include the 5A, 10A, 20A, and 40A variants.
Key readings
Output Voltage
Output Current
Output Power
Device State
Use cases
Monitor output voltage and current of Wago Pro 2 power supplies on a live cloud dashboard.
Create an alert when output current exceeds a defined threshold, indicating potential overload on downstream circuits.
Track output power trends over time to identify increasing load on 24V DC control circuits.
Verify device state remotely to confirm the power supply is operating normally without a site visit.
Compare power delivery across multiple Wago Pro 2 units installed at different panel locations.
Generate periodic reports on power supply utilization for your customer's maintenance planning.
Installation
1Install the Wago 2789-9015 communication module onto the Wago Pro 2 power supply according to the Wago installation guide.
2Verify that the Wago Pro 2 firmware is version 1.4 or higher, and update the firmware if necessary using Wago's configuration software.
3Connect the Modbus RTU wiring (A, B, and GND) between the Wago communication module and the ModbusCloud gateway (MCG or MLP series).
4Configure the Modbus slave address on the Wago Pro 2 communication module and set the baud rate to 19200 with odd parity.
5Import the Wago Pro 2 template in the ModbusCloud platform and assign the correct Modbus slave address to match the device configuration.
6Verify that output voltage, current, power, and device state readings appear correctly on the ModbusCloud dashboard.
Things to watch for
01
The gateway cannot read any registers from the Wago Pro 2. What should I check?
Ensure the firmware on the Wago Pro 2 is version 1.4 or higher. Factory-shipped units may have older firmware that does not support Modbus communication. Update the firmware using Wago's configuration tools.
02
What baud rate and parity settings should I use?
Set the baud rate to 19200 and parity to odd (1 stop bit). These settings must match on both the Wago communication module and the ModbusCloud gateway.
03
The output power reading seems incorrect or shows zero. Why?
The Power Out register at address 6 is a uint32 value that spans two consecutive registers. Ensure your template is configured to read two registers at that address with the correct byte and word order.
04
Do I need the 2789-9015 communication module for Modbus RTU?
Yes. The Wago Pro 2 power supply does not have a built-in Modbus interface. The optional 2789-9015 communication module must be installed to enable Modbus RTU connectivity.
Registers (4)
4 read / 0 write
Name
Address
Function
Type
Unit
Access
State
2
FC04
uint16
R
Voltage Out
0
FC04
uint16
V
R
Current Out
1
FC04
uint16
A
R
Power Out
6
FC04
uint32
W
R
Working with Modbus in your projects?
ModbusCloud is the hardware-plus-software platform that installers use to monitor, visualise and control Modbus devices from one portal. This template is one of hundreds you can use right away.
