Hi there. I am building a Modbus RTU network. I have 82 energy power analyzers. Different brands. Though 80% of them are Circutor (Spain manufacturer). All of them old models. By old i mean probably 10 years old. All of them have Modbus RTU available. The ones who have not will be replaced by probably Schneider line of low cost meters.
I have distributed them into 5 branches, all of them with less than 31 meters. I am looking for cable. Local suppliers (i am in South America) quote RS485 cable for 7 dollars meter. I can buy Profibus cable from Siemens by 3 dollars/meter. my network has an estimated lenght of 2000 meters. The largest branch has 500 meters of cable. Since I am in a budget, i am trying to balance cost of software, gateways, cable, and so on.
I am tempted to use Profibus cable since it is bases on RS-485 standards and is half the price. and i consider Siemens a serious company. Any comments? Anyone can share with me an experience of using this trick. Success or failure stories will be very welcome.
Thanks.
I have distributed them into 5 branches, all of them with less than 31 meters. I am looking for cable. Local suppliers (i am in South America) quote RS485 cable for 7 dollars meter. I can buy Profibus cable from Siemens by 3 dollars/meter. my network has an estimated lenght of 2000 meters. The largest branch has 500 meters of cable. Since I am in a budget, i am trying to balance cost of software, gateways, cable, and so on.
I am tempted to use Profibus cable since it is bases on RS-485 standards and is half the price. and i consider Siemens a serious company. Any comments? Anyone can share with me an experience of using this trick. Success or failure stories will be very welcome.
Thanks.