SAE IT-systems
Im Gewerbegebiet Pesch 14 50767 Köln, Deutschland
0221 598080 0221 5980860 DE812996839 Dipl.-Ing Joachim Schuster
Connecting extension boards in distance as remote IO

Remote I/O

Connect remote process data

The TBUS extension offers a low-cost method for coupling distributed feeders and remote measuring points to a telecontrol system. Instead of installing a complete FW-5, or needing elaborate cabling of signal and measurement lines to a central RTU, expansion modules of the FW-5 family are installed in a decentralised manner and connected to the TBUS extension with a patch cable.

Your individual contact person

Johann Kloucek
Johann Kloucek

Head of International Business Development
Tel.: +49 221 / 59 808- 158

Show all contact persons

The bus signal is read on a FW-5 or FW-5-GATE with the transmitter TBUS-T as the last expansion module of the block, and routed to the TBUS-R receiver over a CAT6e cable. This again powers the local expansion modules and connects up the modules to the bus. The TBUS-R's own power supply, with an additional 2.8A, means power is also provided to a larger number of current-hungry expansion modules (such as the DSO-1, DSO-2 and RES-1).

The system works transparently and with all expansion module types without configuration intervention - in all setIT versions.

Manufacturers of switching equipment can now fully pre-wire switch panels, and fully install and test measurement point and switching elements; the installer only needs to fit the patch cables to a central FW-5 or FW-5-GATE.

Application areas

  • Switching stations
  • Substations
  • Applications with physically distributed measurement points
  • Water towers and pump controllers
  • Waste water plants

Technische Daten

Remote I/O

  • No configuration necessary in setIT
  • Up to 10 blocks per telecontrol unit
  • Up to 10 m bridging per block
  • Maximum overall length 100 m
  • Connection with CAT6e cable
  • Behaviour in the event of disruption to communication can be selected between restart of input/output or reset and restart of the base unit for security reasons.



TBUS-T (transmitter)

  • Transparent transmission of the bus signals
  • including interlock loops for command termination
  • No additional feed
  • Last expansion module of the block
  • No configuration required

TBUS-R (receiver)

  • Another power supply of the expansion module block
  • Up to 10 expansion modules
  • Wide range supply 24 to 60V DC ± 20%, max. 15 W
  • The current limitation on the TBUS in setIT can be lifted from V5.0

SAE IT-systems GmbH & Co. KG
Im Gewerbegebiet Pesch 14
50767 Cologne, Germany

Phone: +49 221 / 59 808-0
Fax: +49 221 / 59 808-60
E-Mail: info(at)

Do you have technical problems?
Don't hesitate to contact us!

Phone: +49 221 / 59 808-55
E-Mail: service(at)

Contact Form

May we help you?
Do you have a question, like to get further information or just speak your mind?

Repair application
If you want to report a faulty or damaged component, please use our repair application.

If you have questions, please contact our Repair and Service department: +49 221/59808-55