If the 'status' command ('i00') is sent to the
DAC-QUAD, it will respond with several lines of text that the PLC can parse.
The connection is a standard nine pin Rs-232 port.
The PLC can also request and play shows through this same port using simple ASCII commands.
All of this is fully documented in the
DAC-QUAD's
Manual.
The manufacture of the DMX Controller DACQUAD is saying the above things.
This DMX Controller needs to be interfaced with the SIEMENS S7 400 PLC having STEP7 software running on it.This DMX Controller is actually controlling a musical fountain.
This fountain is part of a big project which is monitored all together by a SCADA system.The above said PLC is a part of that SCADA system.
The manufacturer of the controller has already provided the serial port commands that can be used to start,stop and generally control the DACQUAD through it's serial port.The serial port commands can be used as the sole method to control the DACQUAD.
Actually the serial port of the controller is accessed from any computer running just about any modem or terminal program.
My main purpose is to interface this serial port of the DMX controller to the PLC and PLC to send these commands and receive the response.
This is the situation
The manufacturer of the controller is saying like this
If the 'status' command 'ioo' is sent to the DAC QAUD,it will respond with several lines of text that the PLC can parse.
The connection is a standard nine pin RS232 port
The PLC can also request and play shows through this same port using simple ASCII commands.
This is the situation so I only want to know how this device can be interfaced and serial port commands can be sent and response received