Post by Lake Shore Jeff M on Feb 11, 2020 7:18:40 GMT -5
At this time, there is no adapter that will convert the signals from a RS232 port to the USB Interface used on the Model 240 Module, therefore, it is not possible to connect that type of port to this equipment.
Hi Ryan, I'm trying to connect the Model240 to a Beckhoff PLC. We already implemented the RS232 protocol for a Model 218 on that PLC and this works fine. As the serial command set of both temp monitors look similar, I was hoping I could also use this for the Model 240 but now I'm afraid the hardware of the ports is not compatible.
Post by Lake Shore Ryan on Feb 19, 2020 1:19:56 GMT -5
Thanks gert, now I understand a little better what you're asking. The 240 as you're probably realizing now was designed to keep cost and complexity down for large scale deployments. So the 240 only has two communication methods: USB intended for instrument configuration using PC software, and PROFIBUS for PLC integration. In the past when customers have integrated with Beckhoff units, it was using a proxy or gateway of some kind that translates the PROFIBUS data to EtherCAT. Whether this makes sense for your installation will probably come down to how many modules you intend to integrate into the system.
Was there a specific reason you wanted to shift from the 218 to 240 modules beyond form factor?
Ryan Oliver Product Manager, Sensors and Instruments Lake Shore Cryotronics