Unitronics M90 controller and a P608 model PLC. The cable used to connect the M90 to the M90-19-R4 converter is a convenient, plug-in RJ11 connector cable, which is available by separate order. 8-6 M90-19-R4 Universal Converter Unitronics Ltd. M90-19-R4 The P608 is connected to the M90-19 R4 via a RS485 communication cable... Unitronics: PLC +HMI (M91 ™ Series) An affordable All-in-One controller: a smart PLC with a textual HMI and keyboard, plus onboard I/O configurations; expands up to 150 I/Os. The M90/M91™ is an innovative micro-PLC (Programmable Logic Controller) with a built-in operating panel.
What I'm trying to do is get all available M90 custom commands received via SMS to end user. All commands and syntaxes can not be fit in one SMS, so I split the message in two different messages. For a clearance: The idea is, that user sends SMS "HELP" to M90. Then M90 sends back SMS with all programmed commands.. Summary of Contents for Unitronics M90 OPLC. Page 1 Write both the HMI and Ladder control application using U90 Ladder freeware. The M90 User Guide and the product's technical specification sheet contain additional information. These documents are located on the Unitronics' Setup CD. They may also be downloaded from the Technical Library at.