The MAQ20-COM4 communication module supports Ethernet, USB and RS-485 industrial buses with the host software interfacing to the system using the Modbus TCP or RTU protocol.

When using the Ethernet interface, up to four simultaneous socket connections are supported and each socket can process up to four simultaneous Modbus TCP transactions. Serial communications over RS-485 can be run at baud rates as fast as 921.6kbps.

Another useful feature of the system is the capability to store acquired data locally for later analysis. Each module has an easily accessible and removable 4GB micro-SD memory card that can be used to log data from all input modules.

To power the system, a 7-34V DC power source is connected to the communication module. Regulated and protected supplies within the module then provide power both to the internal circuits and to all modules in the system.

Parameter Name	Parameter Value
Bus	Ethernet, USB, RS-485, Modbus