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Compare models in a series

Explore model variants side by side. Compare acquisition scope, forwarding protocols and physical ports, then open a model for its full specifications and documents.

Select by requirements

3 matching models · 219 in the catalog

Showing 1–3 of 3
How to choose within a series

How to choose within a series

Match device-side protocols and the host system first, then check ports, wireless connections and capacity. Candidates below use confirmed model specifications.

Current model groupHMI2304

You need multiple serial and Ethernet protocols

Check models confirmed to cover all acquisition protocols for serial and Ethernet connections. Check protocol scope and physical port counts separately. Confirm dedicated CAN, KNX TP and 2-wire MBus connections for the specific model.

Confirmed candidates2 models
  • HMI2304-A9

    All serial and Ethernet acquisition protocols

    Forwarding: BACnet / Modbus / MQTT / Database / OPC UA

  • HMI2304-ARM

    All serial and Ethernet acquisition protocols

    Forwarding: BACnet / Modbus / MQTT / Database / OPC UA

View full group specifications

The device protocol is fixed

Check each model’s listed acquisition protocols and the required host-system protocol. A model suffix alone does not establish equivalent acquisition capability.

Confirmed candidates1 models
  • HMI2304-Lite

    Listed acquisition protocols: Modbus / BACnet

    Forwarding: BACnet / Modbus / MQTT / Database / OPC UA

View full group specifications

This guidance narrows the candidates. Confirm communication roles, read/write direction, the point list, wiring and model-specific resources before final selection.

“Unconfirmed” means documentation does not establish a value; it does not mean zero or unsupported.

Compare models in a series
ModelDevice acquisition → System forwarding
HMI2304-A9
HMI2304-ARM
HMI2304-Lite
01Acquisition scopeDevice side
All acquisition protocols for serial and Ethernet connections
All acquisition protocols for serial and Ethernet connections
Listed acquisition protocols
ModbusBACnetSimulator
02Forwarding protocolsSystem side
BACnetModbusMQTTDatabase
Show 1 more
OPC UA
BACnetModbusMQTTDatabase
Show 1 more
OPC UA
BACnetModbusMQTTDatabase
Show 1 more
OPC UA
Point capacity204810241024
Device capacity128128128
Ethernet ports222
Total serial ports444
RS485444
RS232———
CAN ports———
KNX TP ports———
Two-wire MBus ports———
DI channels———
DO channels———
AI channels———
AO channels———
Touchscreen———
Model documents
Port and model notes

More than 500 protocols.

Specifications & downloads
Port and model notes

More than 500 protocols.

Specifications & downloads
Specifications & downloads
HMI2304-A9

01Acquisition scopeDevice side

All acquisition protocols for serial and Ethernet connections

02Forwarding protocolsSystem side

BACnetModbusMQTTDatabase
Show 1 more
OPC UA
Point capacity
2048
Device capacity
128
Ethernet ports
2
Total serial ports
4
RS485
4
RS232
—
CAN ports
—
KNX TP ports
—
Two-wire MBus ports
—
DI channels
—
DO channels
—
AI channels
—
AO channels
—
Touchscreen
—
Port and model notes

More than 500 protocols.

Specifications & downloads
HMI2304-ARM

01Acquisition scopeDevice side

All acquisition protocols for serial and Ethernet connections

02Forwarding protocolsSystem side

BACnetModbusMQTTDatabase
Show 1 more
OPC UA
Point capacity
1024
Device capacity
128
Ethernet ports
2
Total serial ports
4
RS485
4
RS232
—
CAN ports
—
KNX TP ports
—
Two-wire MBus ports
—
DI channels
—
DO channels
—
AI channels
—
AO channels
—
Touchscreen
—
Port and model notes

More than 500 protocols.

Specifications & downloads
HMI2304-Lite

01Acquisition scopeDevice side

Listed acquisition protocols
ModbusBACnetSimulator

02Forwarding protocolsSystem side

BACnetModbusMQTTDatabase
Show 1 more
OPC UA
Point capacity
1024
Device capacity
128
Ethernet ports
2
Total serial ports
4
RS485
4
RS232
—
CAN ports
—
KNX TP ports
—
Two-wire MBus ports
—
DI channels
—
DO channels
—
AI channels
—
AO channels
—
Touchscreen
—
Specifications & downloads

“—” means the documentation does not establish a value; 0 is a confirmed zero. Check model documentation for shared ports, options and protocol roles.