UMAX180800, 20 Thermocouple, 2 RTD, 4 Inputs, 6 Relays Dual CAN Controller
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CONTROLLER DESCRIPTION
The controller is designed to convert physical signals from bipolar and universal inputs into
J1939 CAN signals and input register data for the Modbus TCP interface. The universal inputs
accept voltage, current, frequency, PWM duty cycle, and discrete voltage levels.
The J1939 CAN network can operate at standard 250 and 500 kbit/s and non-standard
667kbit/s and 1Mbit/s baud rates. The required baud rate is detected automatically upon
connection to the CAN network.
The Modbus TCP/IP interface runs on a standard 10/100 Mbit/s Ethernet link providing up to 5
simultaneous client connections.
The controller can be configured through a set of configuration parameters over CAN or
Ethernet interface to fit the user-specific application requirements.
2.1 Hardware Block Diagram
The controller contains 20 thermocouple, 2 RTD, and 4 universal inputs, 6 relays, two CAN
interfaces and one Ethernet port, and a protected power supply. An embedded 32-bit
microcontroller provides necessary processing power to the controller.
Figure 1. The Controller Hardware Block Diagram
The controller has a wide range of protection features including a transient and reverse polarity
protection, see TECHNICAL SPECIFICATIONS section.