vahidasadi
Newbie level 3
hi
can enybody help me for modbus implementation for interfacing MMX12AA9D6F0-0 frequency inverter (moeller inverter) with DOP-A80THTD HMI (delta hmi)?
i studied the modbus protocol and i created a frame format and i want to control the driver (inverter ) frequency and its stop ,start with hmi throgh rtu nw (master) interface.
but i have some problems in this theaory, either hmi or inverter don't accept it(i dont know exactly), i.e i cannot read or write any data from/in inverter as a slave.
i done it in rtu nw (master) mode, baud rate:9600,rs485,data bit:8,stop bit:2,parity:none.
i receive the following error when excuting the hmi program:
"come 2 station 2
read error
receive unknown code..."
plz help me in this project
i hope to recieve as soon as your answers.
with best regards
bye.
can enybody help me for modbus implementation for interfacing MMX12AA9D6F0-0 frequency inverter (moeller inverter) with DOP-A80THTD HMI (delta hmi)?
i studied the modbus protocol and i created a frame format and i want to control the driver (inverter ) frequency and its stop ,start with hmi throgh rtu nw (master) interface.
but i have some problems in this theaory, either hmi or inverter don't accept it(i dont know exactly), i.e i cannot read or write any data from/in inverter as a slave.
i done it in rtu nw (master) mode, baud rate:9600,rs485,data bit:8,stop bit:2,parity:none.
i receive the following error when excuting the hmi program:
"come 2 station 2
read error
receive unknown code..."
plz help me in this project
i hope to recieve as soon as your answers.
with best regards
bye.