Ethernet I/O Module with Modbus TCP/IP | TCW241

Reference: TCW241

Condition: New product

TCW241 – Ethernet I/O Module with Modbus TCP/IP, 4 Relays, 4 Digital Inputs, 4 Analog Inputs & 1-Wire Sensors

The TCW241 Ethernet I/O module is built for reliable industrial automation, distributed control, and secure remote monitoring.

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Key benefits & unique advantages

It combines digital and analog acquisition with powerful relay switching and 1-Wire sensor expansion, while supporting Modbus TCP/IP, SNMP, and HTTP API for fast SCADA/IIoT integration.

Remote + local control: switch relays via the Web interface and M2M protocols, or automate actions using schedules, thresholds, and custom logical functions.
Accurate time-based automation: built-in RTC with NTP time sync for one-time and weekly tasks.
Industrial-ready integration: Modbus TCP/IP, SNMP v2, and HTTP API for PLC/SCADA and client-server systems.
Smart telemetry: send XML/JSON status payloads via HTTP/HTTPS POST periodically or on alarm conditions.
Multi-parameter monitoring: 4 digital inputs, 4 analog inputs up to 60 VDC, and up to 8 x 1-Wire sensors (up to 16 parameters).
Rugged installation: DIN-rail/wall enclosure and 10/100 Mb Ethernet with Auto-MDIX for dependable field deployments.

Typical applications

Perfect for Modbus TCP/IP industrial monitoring, scheduled process control, relay-driven load automation, and environmental supervision where uptime and clarity matter.

SCADA/PLC integration via Modbus TCP/IP
Data center environmental monitoring and alarms
Process automation with schedules and conditional logic
Battery/energy monitoring (0–60 VDC) and telecom infrastructure
Humidity/temperature/CO₂ monitoring with 1-Wire sensors

Supported 1-Wire sensors (examples)

The 1-Wire interface supports up to 8 sensors, enabling temperature, humidity, CO₂, and galvanically isolated current/voltage monitoring depending on the compatible sensor family.

TST100 / TST103 – temperature sensors
TSH202 / TSH206 – humidity & temperature
TSC200 – galvanically isolated AC/DC current sensor
TSG200 – carbon dioxide (CO₂) sensor
TSV200 – galvanically isolated voltage sensor
TSA200 – 0/20 mA–4/20 mA current loop transmitter

Technical specifications (Table)

TCW241 – Core specifications
Protocols	Modbus TCP/IP, SNMP v2, HTTP API
Web interface	Password-protected configuration & control
Digital inputs	4 (dry contact), non-isolated; 10 ms sampling; 30 ms filtering; max +5.5 VDC
Analog inputs	4 (0–60 VDC), 10-bit, ±1% accuracy, ≥ 1 MΩ input impedance; 500 ms/channel (250-sample average)
Relays	4 (Form C: NO/NC), 3 A @ 24 VDC / 30 VAC (resistive load)
Schedules	4 schedules + RTC with NTP sync; one-time or weekly tasks
1-Wire	Up to 8 sensors (up to 16 parameters); +VW 5.0 ± 0.3 VDC; max current 0.2 A
HTTP/HTTPS POST	XML/JSON status posting (periodic or alarm-triggered)
Power supply	10–28 VDC (−15/+20% IEC 62368-1); 350 mA @ 12 VDC (all relays ON)
Ethernet	10/100 Mb with Auto-MDIX
Dimensions / Weight	145 × 90 × 40 mm / 230 g
Operating temperature	−20 to 55 °C
Operating humidity	5 to 85% (non-condensing)
Warranty	3 years
Overcurrent note	No internal overcurrent protection on relay contact lines: use external fuses/breakers rated up to 3 A

If you need a professional Ethernet remote I/O module with Modbus integration, robust relay switching, and scalable 1-Wire sensing, the TCW241 delivers a balanced mix of control, visibility, and field reliability.