PROFIBUS LOOP VOLTAGE
WE ARE USING PROFIBUS LOOP & CHECK VOLTAGE OF 9 PIN CONNECTOR PIN-3 & PIN-1 & FOUND VOLTAGE WERE 2.5 V DC AT DCS SIDE AND AT IMCC SIDE WE FOUND VOLTAGE WAS 2.6 VDC.We want to know that what is Min Voltage Required or recommend???
Any docoument that indicate thatr Voltage shall be 3-5 Volt DC.
The termination supply voltage can be measured between Pins 5 and 6 and has to be 5V DC.
The voltage on the differential pair varies if you have communication. In idle state it is defined by the 5V DC supply on the connector and the resistive termination networks inside the connectors at both ends of the Profibus cable.