https://forge.codesys.com/forge/talk/CODESYS-V2/thread/ed3b256af3/2020-02-27T20:01:10.689000ZRecent posts to RS485 implementation2020-02-27T20:01:10.689000Z2020-02-27T20:01:10.689000ZBiggleshttps://forge.codesys.com/u/biggles/https://forge.codesys.comee664726b951e20caf5897777f98cf65c7632717

<div class="markdown_content"><p>Codesys V2.3.9.49 (Build NoV 17, 2015)<br/> 750-881 Controller<br/> 750-652 RS232/485 Serial Interface<br/> Beka BA488C Serial Text Display</p> <p>PLC_PRG in ST</p> <p>Good Morning all,<br/> I'm a newby to Codesys and have been tasked to establish communications from 750-652 (Master) to Beka BA488C (Slave) to send ASCII Text under BAKA protocol which is not MODBUS RTU.</p> <p>I need to gain an understanding of:</p> <p>What Libraries do I need to add to the project if at all<br/> How to configure 750-652 as Master<br/> What variables I need to declare in POU</p> <p>If anyone has a code example in ST that demonstrates how the above can be achieved I would be most obliged for any assistance.</p> <p>Please don't be offended if I test your patience with lots of potentially stupid questions whilst I learn.</p> <p>Thank you.</p></div>