Melsec Q Series PLC Modbus Master program makes it possible that Mitsubishi QnA, QnAS and Q series PLC can act as a Modbus master to communicate with Modbus slave device in RTU mode.
In order to be the master, a communication module “QJ71C24” or “QJ71C24-R2” is needed when the PLC is Q series, while module “A1SJ71QC24N”, “A1SJ71QC24” , “AJ71QC24N” or “A1SJ71QC24-R2”, etc., is needed.
The program consists of two parts. One is the PLC ladder logic program, another is parameter setting program(Windows Application). The two software should work together.
The parameter setting program is different according to communication way between the setting program and the PLC, see following.
In order to be the master, a communication module “QJ71C24” or “QJ71C24-R2” is needed when the PLC is Q series, while module “A1SJ71QC24N”, “A1SJ71QC24” , “AJ71QC24N” or “A1SJ71QC24-R2”, etc., is needed.
The program consists of two parts. One is the PLC ladder logic program, another is parameter setting program(Windows Application). The two software should work together.
The parameter setting program is different according to communication way between the setting program and the PLC, see following.
SPECIFICATATIONS
For more details, please download MELSECQ PLC Modbus Master Guide :
