Posted 18 Apr 2017 I have a control system based on Micrologix 1100's (one master and multiple slaves) I would like to add a new PLC to the network. Can I use a 1769-L32E or similar in the field and connect its RS-232 port to a serial radio (this would be a network slave). I want to use the Micrologix 1100 with a message instruction to read the PLC. The reason I want to do this is to migrate the system to a new platform in the future or should I just add another ML100 to the network and continue on the same path. Thanks Share this post Link to post Share on other sites
Posted 18 Apr 2017 (edited) The 1100 has an Ethernet port. You can use the L32E's Ethernet port to send / receive messages to / from the 1100 or vice versa. Ie you don't need a serial radio for any of it Edited 18 Apr 2017 by Michael Lloyd Share this post Link to post Share on other sites
Posted 19 Apr 2017 I do not have Ethernet between the two plc's. They are miles apart and we utilize serial liscense frequency radios to communicate. Share this post Link to post Share on other sites
Posted 19 Apr 2017 Hi brewer. Are ethernet radio links an option for you? We have used those to link two ML1400 PLCs and a SCADA PC at 3 locations all about 2.5 to 4km apart. Going Ethernet allowed us to remotely connect to each unit easily. Cheers Guy Share this post Link to post Share on other sites
Posted 19 Apr 2017 Unfortunately we have to stick to the serial radio's for now. The plan is to go to Ethernet radios in the future but it is not in the budget for this year. There are 10 remote sites. Share this post Link to post Share on other sites
Posted 19 Apr 2017 12 hours ago, brewer said: I do not have Ethernet between the two plc's. They are miles apart and we utilize serial liscense frequency radios to communicate. I see. We have 50+ sites separated by as much as 300 miles and we used cell modems and ethernet. That said, I don't see why you can't use serial between the two PLC's. You're probably aware of this but the software is different for the Compact Logix. Share this post Link to post Share on other sites
Posted 19 Apr 2017 Thanks, I have decided to use a 1769-L32E at the remote site which has a built in Serial port. Share this post Link to post Share on other sites