Internet PLC Forum

General => Technical support => Topic started by: dibi on December 03, 2003, 11:17:47 PM

Title: crc+modbus
Post by: dibi on December 03, 2003, 11:17:47 PM

I want to program a modbus communication crc with the language ladder. I need your help!

Title: Re: crc+modbus
Post by: support on December 04, 2003, 08:42:22 AM

What PLC model are you using? Only the M-series PLC support the MODBUS protocol directly using the READMODBUS or WRITEMODBUS commands.  You can also implement other modbus functions using the TBASIC CRC16 function. Check the following threads for more details:

http://www.tri-plc.com/cgi-local/yabb/YaBB.pl?board=FAQ;action=display;num=1058204850