DIN Rail Products
Square D Products
Niobrara’s MST family of products are optically isolated serial communications adapters for TSX Momentum® I/O. Two variants are available; the MSTD is equipped with an RS-485 port for multidrop applications, and the MSTS utilizes an RS-232 port for point-to-point communications. Each MST variant can have multiple versions, designated by a three digit suffix; e.g. MSTD-101.
Each MST version has a fixed baud rate and protocol.
The Modbus versions of the MST mimic the registers of Modicon’s Ethernet Communication Adapter with additional registers and capabilities. For example, the MST makes it possible to read the state of the outputs (4x registers 101 through 132). The MST also contains a configurable watchdog timer to zero the output registers whenever communication is lost.