I try to communicate with an energy meter CHINT DTSU666 over modmus. Reading address 2000H get always wrong register error. With a second RS485-TTL-USB converter I found that the program on my installation send always addresses by minus one (-1). In the sreenshot I read the frequency on register 2044H. If I type 2045H instead I get the right response =50Hz from register 2044H. ( 01 03 20 44 00 02 8f DE).
What is my fault?
regards
Ulrich
Anonymous
Hello, have you tried to change "Base Addr" in the Options | Settings ?