DFRobot FIT0772 Industrial Grade RS485 Repeater
Vikash.kumar 2025-09-18 14:07:37 341 Views2 Replies Hi Team,
I unable to read data when we connected this repeater between master and slave device.
Master side's A & B cable connect to the input of A& B of repeater and Output of Repeater connect to slave's A & B.
When we check at master side then no any data will appear at master side.
Power given = 24V only.
Please help here.
Thank you
Is the power LED illuminated?
Do you see serial activity via the TX/RX LEDs when polling the slave device?
Are you sure A/B are wired correctly?
Re “When we check at master side then no any data will appear at master side.”: I gather you mean there is no data on the output side of the repeater that is connected to the slave device. If you have RS-485 to USB or RS-232 converters, perform a basic loopback test using two serial ports and a serial console with the repeater wired inline.
K0I05 
