HVAC & building-specific gateways

C2B2004-ARM

Integrates Carrier CCN air-conditioning units into a BACnet supervisory system, with one unit per COM port and up to four units in total. Provides 2 Ethernet ports, 4 serial ports, 1024-point capacity. Acquisition covers all serial and Ethernet protocols in the reviewed list. Existing explicit support for CCN is retained.

Serial ports4

RS485 ports4

Ethernet ports2

Acquisition protocol coverageAll acquisition protocols for serial and Ethernet connections

Acquisition protocolsCCN

Forwarding protocolsBACnet/IP / BACnet MS/TP / OPC UA

Physical interfacesEthernet / RS485

Point capacity1024

Device capacity4

Built-in touchscreen—

HMI configuration—

USB Type-C power—

4G connectivity—

WiFi—

LoRaWAN—

Start using this model

Review the model documents, then prepare the files needed for connection and commissioning.

C2B2004-ARM

No related files are listed in this language. Contact technical support to confirm the documents you need.

General commissioning guide

Connection, point mapping, live-value checks and troubleshooting.

View general steps Confirm required files

Connection and configuration preparation

Review how devices connect, then prepare the field point list and supporting files.

01
Field devices
- Confirm the driver against the device brand, full model and communication documentation
02
Device-side acquisition
- All listed acquisition protocols for serial and Ethernet
- CCN
03
C2B2004-ARM
- Ethernet × 2
- RS485 × 4
04
System-side forwarding
- BACnet/IP
- BACnet MS/TP
- OPC UA
05
Compatible system types
- BACnet building management system
- OPC system

Arrows show connection order. Check model wiring instructions and the project point list for terminals, port assignments and read/write directions.

Communication roles

Acquisition side: Not specified in the records; verify against the field device and supervisory system
Forwarding side: Not specified in the records; verify against the field device and supervisory system

Recorded capacity

1024 points / 4 devices

Check before connecting

Check the device brand, model, driver version and interface. Use the wiring diagram to confirm terminals and port assignments.
Prepare a point list with addresses or objects, data types, byte order, units and read/write permissions.
Confirm the role at each end and the device address, serial settings, or IP address and port.
Check point count, device count and physical port count separately, then confirm capacity for the actual data volume.

Files for configuration

Model documentsNo dedicated file listed
Request
User manualNo dedicated file listed
Request
Wiring diagramNo dedicated file listed
Request
Configuration tools and supporting filesNo dedicated file listed
Request

Statuses reflect files associated in the current language. Contact technical support with this model to confirm other supporting resources.

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 groupHVAC & building-specific gateways

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 candidates1 models

C2B2004-ARM
All serial and Ethernet acquisition protocols
Forwarding: BACnet/IP / BACnet MS/TP / 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.

Overview & technical information Selection checklist FAQ (1)

Product overview

Key functions

Data-format processing

Supports linear scaling, bit extraction and byte-order conversion to handle different device data formats.

Web monitoring and operation

Use built-in web pages to view, configure and monitor device data during commissioning and operation.

Connections and integration

Acquisition covers all serial and Ethernet protocols in the reviewed list. Existing explicit support for CCN is retained. System-side interfaces: BACnet/IP, BACnet MS/TP, OPC UA. Configure the device roles and point mappings for the installation.

Model selection essentials

Model configuration: 2 Ethernet ports, 4 RS485 channels, 1024 points, 4 devices.

Current product specifications

Specifications are sourced from the supplied 2026 product catalog. Unspecified values remain unconfirmed.

Parameter	Specification
Total serial ports	4
RS485 ports	4
Ethernet ports	2
Point capacity	1024
Device capacity	4
Acquisition protocols	All serial and Ethernet protocols in the reviewed list; existing explicit support for CCN is retained
Forwarding protocols	OPC UA / BACnet/IP / BACnet MS/TP
Physical interfaces	Ethernet / RS485

The serial/Ethernet acquisition scope above follows the model confirmation on 2026-10-02. Existing explicit protocol support and specialized interfaces are retained; verify actual hardware interfaces and communication roles separately.

Model datasheets

File unavailable in this language

Selection checklist

Why this matches

Acquisition protocolsModbus RTU

Confirm before selecting

Protocol compatibility is the first step. Check the device model, communication roles, point count and wiring. Capabilities that are not documented require confirmation.

Not yet documented：Acquisition roles / Output roles / RS232 ports / CAN ports / KNX TP ports / Two-wire MBus ports / DI digital inputs / DO digital outputs / AI analog inputs / AO analog outputs / USB Type-C power / 4G connectivity / WiFi / LoRaWAN / HMI configuration / Built-in touchscreen / Product type

View parameter evidence

Acquisition protocols · Modbus RTUModel rule confirmation (2026-10-02) · 2026-10-02

Continue filtering and comparing

Related FAQs

Find configuration and usage guidance linked to this content. Refer to documentation for the exact model and version.

What does X mean, and how do acquisition and forwarding protocols differ?

X denotes the acquisition-side protocols. Also check forwarding protocols, communication roles, physical interface types and port counts.

Read the full answer

C2B2004-ARM

Start using this model

General commissioning guide

Field devices

Device-side acquisition

C2B2004-ARM

System-side forwarding

Compatible system types

Communication roles

Recorded capacity

Check before connecting

Files for configuration

How to choose within a series

You need multiple serial and Ethernet protocols

Product overview

Key functions

Data-format processing

Web monitoring and operation

Connections and integration

Model selection essentials

Current product specifications

Model datasheets

Selection checklist

Related FAQs

Your next connection starts here.