The DAT 9011 is a comprehensive unit designed to control a range of slave Mod bus RTU tool connected on serial line RS 485. The master executes the reading and writing of the field values. The device also perform the logical and mathematical functions requirements for the system operation. It is also facilitated with a single general analogue input channel. The single channel for Volt and mA input, 2 digital inputs and 2 relay outputs are included. On input an auxiliary source is offered to supply passive sensors on the field. Moreover, by means of the Ethernet interface or the RS 485 “SLAVE” or RS 232 ports, it can read and write with the ethernet interface or the RS 485 “SLAVE” or RS 232 ports.