How do I use my RS232 mini tester?

How do I use the RS232 mini tester from SFA?

Shop Floor Automations recommends a DB25 RS232 mini tester with every hardware order. We terminate our RS232 cabling with RJ45 connectors and have different adapters to tailor to each installation. Depending on your machine, you may require different pinouts on the adapters.

To test the correct pin-out in the cabling:

  • Connect the cable to the PC, Hub, or switch box.
  • At the other end of the cabling, where the control would normally plug in, connect the tester. Without the tester plugged in the machine, you should see have “RD” lit and “TD” unlit.
  • For most applications, the other lights do not matter. If you plug the tester into the CNC machine control, you should then see “TD” lit.

If you have any variation of this, your machine will not communicate properly.

More about RS232 Cabling & Serial solutions:

From RS232 cables, RS232 Adapters, Honda Cables, RS232 Testers, & more, Shop Floor Automations has your custom cabling solutions! We can sell you 25 Foot to 100 Foot cables off the shelf, as well as make custom cables from 125 Feet up to 300 Feet in length.

  • Designed for Harsh Manufacturing Environments
  • Low Capacitance
  • Supports cable runs up to 300 feet with no data lost
  • 3 Levels of Shielding
  • 8 Conductors in the RS232 Serial Cable
  • 5-Year Warranty Against Defects
  • List of Supported Controls
  • Also, ask about RS232 adapters, FANUC cables, and more!