ProSoft 1452-25M: Your Reliable Modbus-to-EtherNet/IP Translator
Got legacy Modbus devices that won’t talk to your modern ControlLogix system? This little box solves that headache. The 1452-25M quietly handles protocol translation between older Modbus RTU/ASCII gear and EtherNet/IP networks – no rewiring needed. Fact is, most plants have at least one dusty temperature sensor or old drive that still works fine but won’t connect to new PLCs. Thing is, this module makes them play nice without breaking the bank.
Technical Snapshot
| Brand | ProSoft Technology |
| Core Function | Modbus RTU/ASCII to EtherNet/IP Gateway |
| Physical Size | 90mm x 90mm x 60mm (3.5″ x 3.5″ x 2.4″) |
| Weight | 0.48 kg (1.06 lbs) |
| Power Draw | Under 500mA @ 24VDC (typical) |
| Temp Range | -40°C to +70°C (industrial grade) |
| Key Protocols | Modbus RTU/ASCII, EtherNet/IP, PROFINET |
Saw a Midwest chemical plant use these last month – they’d been nursing 15-year-old Modbus flow meters that kept failing their new Rockwell system. Popped in the 1452-25M, configured it through the web interface in 20 minutes, and suddenly those old meters were chatting with their ControlLogix 5580. We handle tons of these gateway scenarios daily across Allen Bradley, GE Fanuc Mark VIe, and even some older Yokogawa systems. If you’ve got legacy Modbus gear hanging around (and who doesn’t?), this fits right into ControlLogix racks or standalone DIN rail setups. Honestly saved a paper mill from scrapping functional level sensors just last week.

That four-character LED display? Real lifesaver during midnight plant outages – shows “BUSY” or “ERR2” instead of cryptic hex codes. Personally I’d skip the PCB software; the built-in web server gives you diagnostics and firmware updates straight from your phone. One neat trick: the ProSoft Discovery Service scans your network to find all modules – saved a brewery technician three hours of hunting through cabinets last winter. Not flashy, but solid as a rock in harsh environments. Oh, and it handles 10/100Mbps auto-negotiation so no fussing with network switches. Just don’t expect hot-swap redundancy – this is for keeping things running, not high-availability setups.








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