S0 pulse counter with MODBUS RTU interface TDI340

S0 pulse counter with MODBUS RTU interface TDI340

SKU: TCS-080

TDI340 from Teracom Systems is an S0 pulse counter with MODBUS RTU interface. It has 4 isolated digital inputs. The inputs complying with the S0 standard 62053-31.

  • Manufacturer: Teracom
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TDI340 is an S0 pulse counter with MODBUS RTU interface. It has 4 isolated digital inputs. The inputs complying with the S0 standard 62053-31. The counter works in polling or edge modes. In the edge mode, it can count on rising, falling, and both edges.

In fact, the device has four 32bit independent counters. Their information is stored in non-volatile memory. This prevents the loss of information.

In addition to raw information about counted impulses, the device also offers registers for the true (calculated)physical values. This helps to record energy, water, gas, etc. directly.

The device is dedicated for the pulse counter. It also provides simultaneous readings for the state of the digital inputs – OPEN/CLOSE.

Independent delays for Low-To-High and High-To-Low transitions can be applied. The delays are from 0 to 656 seconds in 10mS step. They work if the counter for the corresponding digital input is in polling mode. The delays are very useful for additional digital filtering of the incoming pulses.

The device has a very wide range of supply voltage starting from 5, up to 32 volts. This makes it suitable for various industrial applications.

The counter can be used with the energy monitoring module TCW260 and other third party MODBUS RTU master devices


  • Remote monitoring of electricity meters;
  • Industrial process control;
  • Remote monitoring of water meters;
  • Monitoring of devices with S0 outputs;
  • Remote data acquisition;
  • Remote monitoring of gas meters;
  • Energy management;
  • Process monitoring.


  • Operating voltage range: 5to 36VDC
  • Current consumption: 25 mA@5V
  • Operating temperature range: -20 to 60°C
  • Operating relative humidity range: 10 to 90% (non-condensing)
  • Storage temperature range: -25 to 65°C
  • Storage relative humidity range: 5 to 95% (non-condensing)
  • Ingress protection: IP40 (connections IP20)
  • Digital inputs
  • Isolation: Functional, 1kV DC
  • Independent modes: OPEN/CLOSED (“Dry contact”) and COUNTER(S0 compatible)
  • Maximum count value: 232-1
  • Maximum input voltage: +5.5VDC
  • Maximum frequency for edgecounter mode: 100Hz
  • Polling period: 10mS
  • Interface Protocol: Modbus RTU RS-485
  • serial line Number of bus transceivers: up to 63
  • Bus cable: Twisted, shielded, 2×0.5mm²
  • Response timeRead/Write:50mS maximum
  • Dimensions: 35x86x59 mm
  • Weight: 60 g
  • Mounting: On 35 mm DIN top-hat rail
  • Warranty period: 3 years
    • SKU
    • Weight
      0.15 kg
    • Dimensions (L x W x H)
      10 x 8 x 10 cm

Faulty Goods and Warranty

Where such goods have been supplied we undertake to repair or replace them as quickly as possible.Prior to returning faulty items, please contact us with a description of the fault as one of our engineers might be able to assist you by resolving the issue over the phone.
A Warranty form must be filled out and returned with any goods.

Our standard warranty period is 12 months from the date of purchase unless stated otherwise.

Other warranty periods:

Labjack Products: 5 Years
Atop Products: 3 Years
MeanWell Products: 3 Years
Terracom Products: 3 Years

Warranty is subject to us being satisfied that a defect was caused by defective workmanship or materials and was not caused by or was not substantially contributed to by other factors beyond our control including incorrect installation, alterations or modifications of the product not recommended by the manufacturer.

Returns Policy

If you are dissatisfied with our goods you may return them within 14 days of the dispatch date. Contact us for an authorisation and we will refund your purchase less shipping costs and restocking fees. All returned goods MUST be in AS NEW condition including ALL PACKAGING and DOCUMENTATION / MANUALS etc.

Please note:

  • The product returned will attract a 20% restocking fee.
  • The customer must pay the delivery costs.
  • Non standard, custom made or a specially manufactured or imported products are not returnable.
  • Semiconductors, books and software are not refundable

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