I need a small circuit board designed with the following features:
24VDC Power to power it up
4Each 24VDC inputs
4Each Relay outputs - 2 amp relay contact
Two rotary dials to select address of board from 1-32
Modbus protocol on RS485 port
The inputs will appear on the modbus RS485 port as Modbus inputs
The outputs will appear on the modbus RS485 port as Modbus coils.
This is basically a Modbus remote I\O board with 4 inputs and 4 outputs that I can pole from a master device using the Modbus protocol.
I will need a prototype, and after it has been proved out, the complete board info, girber files, components, source code etc.
46 freelancer đang chào giá trung bình $1132 cho công việc này
Hello Sir. I'm very interested to do your project in just 5 days. Habilidades y experiencia relevante Microcontroller, PCB, Eagle, MikroC Htos propuestos $750 USD - Project
Hi, I can build Modbus RS485 network for 32 boards (4 inputs and 4 outputs). Relevant Skills and Experience Arduino Modbus RS485 Proposed Milestones $930 USD - Project Please send more details about your project.
EE and circuit design expert here to help u sir Relevant Skills and Experience Electrical engineering, circuit design Proposed Milestones $750 USD - required work
I am an electrical engineer also expert in arduino. i will provide you code, schematics , gerber files etc Relevant Skills and Experience Electrical engineer Proposed Milestones $766 USD - circuit board
there are lots of ready made 2-4-8...16 relay boards with modbus protocol but sure, i can do a custom board for you Relevant Skills and Experience mC programming, pcb design Proposed Milestones $755 USD - !