Communication Modules (ROC800-Series)

A variety of communication modules provide solutions to suit many specific applications. Modules include:

EIA-232 (RS-232) for point-to-point asynchronous serial communication. EIA-232 (RS-232) communications are commonly used to provide the physical interface for connecting serial devices, such as gas chromatographs and radios,
to the ROC800-Series. The EIA-232 (RS-232) communications module provides essential handshaking lines required for radio communications, such as Data Terminal Ready (DTR) and Ready to Send (RTS).
EIA-422/485 (RS-422/485) for asynchronous serial communication. EIA-422/485 (RS-422/485) communications are commonly used to multi-drop units on a serial network over long distances using inexpensive twisted-pair cables. When the module is set to EIA-485 (RS-485) mode, it allows multiple-point communications. When set to EIA-422 (RS-422) mode, it allows long distance point-to-point communications. Modules are set via jumpers
Dial-up modem for communication over Public-Switched Telephone Network (PSTN) up to 57.6K bits per second (bps) using V.42 bis, MNP2-4 and MNP10 error correction.
Multi-Variable Sensor (MVS) module provides the communications interface and the isolated, short-circuit current-limited power required to connect up to six MVS sensors per module. A ROC809 can support a maximum of two MVS modules providing an interface for up to 12 MVS sensors.