Interface converter ZET 7070

  • USB↔RS-485 interface conversion
  • Digital sensors and controllers power supply
  • Data exchange with PC

Basic delivery scope with digital transducers for laboratory use includes the following: interface converter ZET 7070, power supply module 220V→ +24V, measuring line connector ZET 7001 (these components are mounted on a din-rail 300 mm); cable USB 2.0 A→B – length 1,8 m; terminal resistance 120 Ohm (for industrial use — steel plug); CD with  ZETLAB SENSOR software, enabling connection of up to 60 digital sensors; set of operational documentation.

In the case, if the interface converter is delivered together with digital sensors in industrial version, the delivery scope includes an additional 2 m connecting cable for ZET 7XXX with FQ14-4TJ-7 ↔ FQ14-4TJ-7 connector, and a connecting cable for interface module and ZET 7XXX measuring line with connection “free port ↔ FQ14-4TJ-7”.

POR (price on request)

* Minimum order value: from 7 700 USD


of Interface converter ZET 7070

Intelligent sensors converters interface RS-485
Data protocol Modbus RTU
Data rate 4800, 9600, 14400, 19200, 38400, 57600, 115200 bps
Parity control 0 – no control, 1 – control (oddity, ODD)
Overall data flow frequency for all nodes 2500 Hz
Maximum number of simultaneously connected modules (Actual modules number depends on data channel load) 60
Power supply of connected ZETSENSOR modules yes (up to 4 pcs, connection of additional modules requires the use of external power supply module)*
PC interface
PC connection interface USB 1.1
Operational parameters
Dimensions 84×50×24 mm
Device power 5 V (via USB)
Rated input up to 100 mW
Operational temperature range from -40 to +100 °C
Electromagnetic compatibility EMC
MEK 61000-4-2 (IEC 61000-4-2), ESD contact 4 kV, air 8 kV
MEK 61000-4-4 (IEC 61000-4-4), EFT power 0,5 kV, signal 0,25 kV
MEK 61000-4-5 (IEC 61000-4-5), Surge 500 V

*Interface converter ZET 7070 is equipped with an integrated power supply module enabling connection of up to 4 digital sensors ZET 70xx (in the case if the sensors do not require usage of active primary transducers). In all other cases, external power supply module is used – its power range should be more than 1,5 times higher than overall capacity of the devices connected to the primary transducer.

Available product versions

Standard: laboratory version in green plastic casing

OEM: compound coating

Industrial*: standard module placed into leak-proof casing with a transparent cover

*The price is calculated on indiviadual basis

Operating principles

of Interface converter ZET 7070

For the protection of measuring networks based on ZETSENSOR RS-485 digital sensors DTB devices are used.

ZETLAB package provides drivers for ZET 7070 modules. ZETLAB data server automatically detects device presence in RS-485 line, reads measurement channel name, measured value, upper and lower range of acceptable parameter values and constantly reads measurement channel data forming constant synchronized channel in ZETLAB environment.

ZETLAB data server scans available addresses of the line. In the case if a new device is found a new channel is dynamically connected to the system.  In the case if a new ZET 7070 device is found, ZETLAB data server also connects new channels.  Thus the line maintenance can be performed in parallel with other channels operation, i.e. the system enables “on the go” elements change.

The sensors can be mounted on the measured object or inside of electrical cabinet together with interface modules providing data transfer.

ZETLAB electrical cabinet has compact dimensions if compared to available analogs. ZETSENSOR modules advantages are as follows: they are easy to install and to dismount, they have power indication and data transfer option, which considerably simplifies on-site system diagnostics.


User manual for configuration of the interface module


of Interface converter ZET 7070

  • ZETSENSOR Power Supply

    5 V power supply from 12 V USB bus for ZET 70XX sensors power supply

  • Integrated power supply module

    Number of sensors connected in the case of integrated power supply module use: not more than 4

  • External power supply module

    Number of sensors connected in the case of external power supply module use: not more than 60

  • Connection to a single PC

    Number of measuring modules connected to a single PC via ZET 7070 interface converter: not more than 100

  • Static discharge protection

    Protection of RS-485 lines from body static discharge of 15 kV (100 pF, 1.5 kOhm)

  • IEC 1000-4-2 protection

    RS-485 lines IEC 1000-4-2 protection:  6 kV charge (150 pF, 330 Ohm)

Measuring network connection scheme

of Interface converter ZET 7070

ZET 7070 - connection pins designation

Measuring network
connection pins

Connection pins designation for the connection to RS-485 line

Contact Designation Labelling
1 +(9…24) B Red
2 RS-485 line «B» or «DATA-» Blue
3 RS-485 line «A» or «DATA+» Green 
4 GND Yellow

Measuring network structural scheme

interface converter - measuring network diagram

Measuring network connection scheme

interface converter - measuring line diagram

Basic configuration

of Interface converter ZET 7070

Basic delivery set 7070

Basic configuration of Interface converter ZET 7070 includes:

  • Interface converter ZET 7070
  • USB cable
  • Power supply module 220V → +24V
  • CD with ZETLAB SENSOR Software
  • set of operational documentation

POR (price on request)

* Minimum order value: from 7 700 USD

Technical support

Should you have any difficulties in using ZETSENSOR digital sensors, please, check the Technical support clause!

The Clause contains information of the most frequent issues relating to connection, configuration and use of digital sensors.


and installation of measuring networks


of digital sensors

Directive 2011/65/EU (ROHS, ROHS II)



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