Application note

Connecting RS-422 in Party Mode

Home > Resources > Application notes > Connecting RS-422 in Party Mode

Description

Connecting RS-422 in party mode can be fraught with issues. Following a few simple best practices can save a good deal of time troubleshooting.

Applicable

  • MDrive Linear Actuator
  • MDrive Plus
  • MForce

Requirements

  • MDrive Plus or MForce Motion Control
  • RS422/485 converter

Details

Configuring the MDrive

With a comm converter and the MDrive units you plan to use in Party Mode at hand, perform the following:

  1. Connect in single mode RS-422 and initiate communication, download any programs if required.
  2. Assign a device name (DN=”<A-Z, a-z or 0-9>”) i.e DN=”A”.
  3. Set the party flag to 1 (PY=1).
  4. Press CTRL+J to activate party mode.
  5. Type in [Device Name]S and press CTRL+J (Saves the DN and Party Configuration) i.e. AS CTRL+J.
  6. Remove power and label the drive with the assigned DN.
  7. Repeat for each system MDrive.

Terminating the cable

Under 15 ft we recommend that no termination is used. Over 15′ (4.5 meters) The value of capacitance should be calculated using the formula above to find the cable round trip delay divided by the characteristic impedance of the cable (Zo).

 

Resource files

When it comes to your form, fit and function requirements, don’t settle. Get precisely what you need working with us. We know motion.

Contact us with any questions about how we can help you with your motion application or for assistance with your SEM products.

Browse our resource section and find the most useful tools and documents for all our products.