PCMCIA-RS485/2 connected to RS422

[AGV]

Sorry, What does it mean?

It doesn't exist codification (NRZ, NRZI, ...)?

[Chris_Rake]

The PCMCIA-485 cards transmit and receive UART-framed data. For each byte sent, the frame will be:

Start bit, data, parity (optional), and stop bit.

There is no sync clock, and the UART resyncs on the start bit of each frame. A summary of the serial communication, including voltage levels and the data frame details, can be found at:

http://digital.ni.com/manuals.nsf/websearch/7A8939051A4C0DEB86256E9800596033?opendocument&Submitted&&node=132090_US

[ICICEK]

I have an encoder with RS 422 interface. I purchased NI PCMCIA-485 card. The card is working but I could not get data from the encoder yet. The encoder is a Renishaw RE36 S

– Absolute binary syncro-serial interface (SSI): http://www.renishaw.com/UserFiles/acrobat/UKEnglish/L-9517-9151.pdf

Has anyone worked with reading from RS422 using NI PCMCIA-485? As I understand I need to send clock signal and receive data back but I do not know how. Does anybody have examples or ideas? I really appreciate it.

Thanks,

Ismail

----------------------------------------------------------

Ismail Cicek
Project Engineer
OnBoard Systems Engineering
A Division of MTC Technologies
San Antonio, Texas 78249
Phone: (210) 477-5316
Cell: (210) 289-3800
Fax: (210) 932-1280