Data send from Modbus TCP to NR with ttl convertor rs485

Hello, i have little problem with receive data to NR from Modbus TCP with TTL convertor rs-485. I have disable BT and setted serial0 to AMA0. When i select AMA0 on NR this don't want connect to my device. I check the modbus with USB an this work perfectly. If need information about settings i will give. Thank's