Modbus Non Volatile Memory Module

Modbus Non Volatile Memory Module

SKU: KTA-299

Non-volatile memory space read/writable via Modbus RTU on RS-485. Doesn't wear out like EEPROM, and data persists for 95 years without power

Ocean Controls
  • Manufacturer: Ocean Controls
Buy more for less:
1-4items$157.54/ each 
5-9items$141.79/ eachsave10%
10or more items$133.91/ eachsave15%
  • $157.54
In stock(3 items available)

The KTA-299 provides 64k of non-volatile memory, accessable via Modbus RTU. The memory space is arranged as Modbus Holding Registers, allowing easy reading and writing from any industrial controller, SCADA System, PLC, etc. Data is retained in memory without power for up to 95 years (at 55°C).

The memory is stored internally using a new technology known as Ferromagnetic RAM. The advantage of FRAM over more traditional non-volatile memories such as EEPROM is that it can be written and read millions of times without wearing out and failing.


  • Storing calibration and configuration data
  • Logging
  • Saving counters or accumulators
  • Recording logs of system errors for diagnostics or fault finding
  • Power Supply: 8-28 VDC
  • Current Consumption: 30mA (typical), 100mA (max)
  • Protocol: Modbus RTU salve on RS-485
  • Retain data without power for up to 95 years
  • 1 000 000 000 000 (1012) read/write cycles
  • 64 kilobytes of memory space
  • Operating Temperature: -20 to 80°C
  • DIN Rail mount
  • Dimensions: 100L x 13W x 54H (mm)
    • SKU
    • Weight
      0.04 kg
    • Dimensions (L x W x H)
      10 x 6 x 2 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

Full Terms and Conditions

By placing an order with Ocean Controls, you agree to be bound by our Terms and Conditions of Trade.

Related products