Posted 20 Jun 2018 Hello, I have a NX1P2 controller that would control a DC motor, currently it's open loop. I can control the speed and the direction. I'd like to add an encoder to it. The motor I have is from MidWest motion S27 series and they told me I can use their encoder but the problem is it output TTL My question is, how do I read this encoder output in the PLC since it's TTL? Second, is there a high speed counter in Sysmac Studio for the PLC I have? Thank you everyone in advance Share this post Link to post Share on other sites
Posted 20 Jun 2018 EDIT: Title should be Interfacing TTL Encoder Share this post Link to post Share on other sites
Posted 20 Jun 2018 NX-EC0132 http://www.ia.omron.com/products/family/3190/specification.html RS422 (TTL) RS422 (TTL) circuits provide a constant 5 V signal level that is not dependent on the supply voltage. Two supply voltage ranges can be selected: From 4.75 to 5.5 VDC (can be used to replace open collector output drivers) or from 8 to 30 VDC. Using differential signals the output fully complies to the RS422 standard. https://www.posital.com/en/products/communication-interface/incremental/incremental-encoders.php The above information may help you out. Regards, Garry 1 person likes this Share this post Link to post Share on other sites
Posted 21 Jun 2018 Thank you so much Garry, I really appreciate the time and effort you took to answer my question Cheers! Share this post Link to post Share on other sites
Posted 21 Jun 2018 Omron makes an I/O module that will accept a 5V encoder signal directly, and includes high-speed counter functions. NX-EC0142 See Omron Manual W524, link below:https://industrial.omron.us/en/media/NX_Position_Interface_UsersManual_en_201504_W524-E1-05_tcm849-113373.pdf Note: You must add an I/O Power Injector module between the PLC and the NX-EC0142, NX-PF0630 See Omron Manual W523, Link Below:https://industrial.omron.us/en/media/NX_System_UsersManual_en_201309_W523-E1-03_tcm849-110553.pdf Share this post Link to post Share on other sites
Posted 9 Jul 2018 Thank you @Daniel_TSG. This is really helpful Share this post Link to post Share on other sites