MGate MB3000 The MGate MB3000 is a brand new gateway device that connects Modbus RTU or ASCII to Modbus TCP. The MB3000 is designed to be much easier to use than other Modbus gateways, and includes many advanced functions that simplify operation.
• Priority control for urgent commands As Modbus networks increase in size and complexity, the lag time between commands and responses becomes a growing concern. MB3000 advanced models provide a priority control function for urgent commands, allowing users to force certain commands to obtain an immediate response. Different methods are available to define which commands receive priority, depending on your system’s requirements.
Multiple masters may exist on both the TCP and RTU/ASCII network. Real-time control would typically fail if many requests were sent simultaneously from many masters. Priority control allows one master to be selected by IP address or serial port as the overriding controller. The overriding controller’s commands will take precedence and will always receive an immediate response.
•Multiple masters with overriding command
Certain control requests may be sent from many masters, with only one specific request format requiring real-time control (e.g., “turn-off”). Priority control allows a specific request format to be designated as the overriding command, for immediate response regardless of the source of the request.
•Single master with complex control behavior
Certain control sequences may be complex or may need frequent modification. A TCP port can be dedicated to urgent requests. Requests can be defined by the HMI programmer and sent to the dedicated TCP port for immediate response.
The serial redirector function also allows different Modbus serial networks to communicate with each other. The MB3270 and MB3470 are thus able to support every master-slave combination between TCP, RTU, and ASCII, providing easy consolidation of all your Modbus networks.