Ethernet IO Module TCW241

TCW241 Ethernet IO Module Supplier

An IO module with Modbus TCP/IP capability is TCW241. It is designed to be used for standard remote Ethernet IO monitoring and control. The gadget contains four relays, four analog inputs, and four digital inputs. Up to eight 1-wire temperature, humidity, carbon dioxide, AC or DC current, and other sensors are supported by its 1-wire interface.
The Ethernet IO module's relays can be turned on locally or remotely. So-called remote activation uses M2M, or a pleasant Web interface. The status of a single parameter, a timetable, or specially created functions can all be used to activate the local system. Up to four parameters may be included in the function.

The module supports the HTTP API, SNMP, and MODBUS TCP/IP.
The module has a real-time clock that is synchronized with a time server. For advanced relay scheduling, it is employed. The advanced schedule can be used to turn relays on and off at certain intervals for one-time or recurrent (weekly) chores.

The TCW241 can start an HTTP post connection to a distant dedicated server. This post's payload is an XML or JSON file. The current values for monitoring parameters are contained in the files. An HTTP post can be sent once a while or in response to a defined alert.


  • Straightforward configuration and control using a user-friendly Web interface;
  • 4 digital "dry contact" inputs for direct relay output monitoring;
  • 4 analog inputs for telecom battery monitoring with a 0 to 60VDC range;
  • For analog inputs and some sensors, a multiplier and an offset
  • 1-wire interface supporting up to 16 parameters and 8 sensors;
  • 4 high-current relays with contacts that can be both typically open and closed;
  • TCP/IP support for MODBUS;
  • Support for SNMP version 2 with up to 5 recipients for trap alarms;
  • 4 schedules for immediate relay output control;
  • Specialized logical operations for adaptable relay output activation;
  • Secure email transmission with support for TLS 1.0, TLS 1.1, and TLS 1.2;
  • HTTP API instructions and XML/JSON for client-server systems;
  • Support for Dynamic DNS for No-IP, DynDNS, and DNS-O-Matic providers;
  • Support for time synchronization via the network time protocol (NTP);
  • Updating remote firmware using a regular browser;
  • Wall-mountable/rugged DIN-Rail enclosure.

IO module applications for Ethernet

  • Scheduled control of base stations for mobile operators utilizing the MODBUS TCP/IP protocol for industrial monitoring and control
  • Multi-parameters industrial management
  • Environmental monitoring at a mushroom farm
  • Scheduling industrial process control
  • Controlled by heaters or coolers
  • Automation of industrial processes
  • Environmental monitoring in data centers

TCW241 supported sensors

  • Thermometer with one wire TST100
  • Thermometer with digital input TST103
  • TSH202, a 1-wire humidity and temperature sensor
  • Digital temperature and humidity sensor TSH206
  • TSC200 Carbon dioxide sensor with 1-Wire interface, galvanic isolated AC/DC current sensor TSG200
  • The TSV200 0/20mA-4/20mA current loop transmitter with a 1-Wire interface is a 1-Wire galvanic isolated voltage sensor.

Technical Properties:

  • Supply voltage, VDC: 10 - 32
  • Maximum current (with all relays ON), mA: 350@12VDC
  • Weight, g: 230
  • Dimensions, mm: 145x90x40
  • Operating temperature range, °C: -20 to +55
  • Operating relative humidity range, %RH: 5 to 85 (non-condensing)
  • 1-Wire bus (VDD), supply voltage for VDC: 5.0 ± 0.3
  • Maximum output current for 1-Wire bus (VDD), A: 0.2
  • Analog input range, VDC: 0 to 60
  • Analog input resolution, VDC: 0.01
  • Analog input accuracy, %: ± 1
  • Maximum switchable relay current, À: 3
  • Maximum switchable relay voltage, VAC/VDC: 30/24