Carel Technology PCO200MDM0 RS232 Serial Modem

The Carel PCO200MDM0 RS232 Serial Modem is a non optically isolated RS232 serial connection card designed to plug into CAREL’s pCO control line to interface with an external modem. It enables a pCO controller to communicate with standard PSTN or GSM modems via a direct RS232 link, supporting modem-based data transmission within the pCO ecosystem. The card is specified as part of CAREL’s pCO* family and is used to activate the MODEM communication path alongside the built-in CAREL and MODBUS protocols, so users can configure and run modem-based remote communications through the pCO OS. Installation provides a dedicated serial interface for the external modem, with modem functionality enabled through the pCO configuration (the relevant documentation notes the PCO200MDM0 as the RS232 serial card for modem use). This makes it suitable for applications where remote monitoring or control requires dial-up or GSM modem connectivity from CAREL-controlled HVAC and process systems.