Profibus Communication problem 6RA70

Sorry i couldnt upload the DNL file here, so upload it in below link:

[snip]

please download from there.

thanks.

i edited the PLC project. nyou can open in now with UK language.

best regards.

PISCEAN 2010

Hello,

In which format you have attached DC drive backup file? It is not Drivemonitor DNL file hence could not open the program. Furthermore do not know your drive side parameter settings.

Moreover I checked PLC program & you need to correct command & set point values.

1. Control word 1 i.e. START, ENABLE, STOP etc. commands which you apply are wrong, i.e. you are transferring 9C7E (H) value, instead you need to transfer 47F command to start drive, please note control word 1 bit 0 isON command which is edge controlled & bit 10 must be set 1 so that PLC control is applicable.

2. Set point which you apply is wrong. Please note 16384 is decimal value which needs to convert in HEX format & then transfer, e.g. 16384 (D) = 4000 (H) = Max speed. So please correct your PLC logic accordingly.

Hope this helps. 

 Hi Sir,

thank you so much for sending useful data, the problem was in tenth bit of control word. i didnt do this bit to 1, it was 0, i can not control drive. drive start now, but i have problem in setpoint, it seems it work without setpoint, armature output voltage is less than 2 volt while setpoint is 5 pecent of max scale. i try to find the problem. if you have any idea please tell me.

thanks any way.

PISCEAN 2010

Hello,

It's good to know about improvement.

Which value you send to drive as SETPOINT? 

Since do not know your drive parameter setting, at this point I can only guide you at PLC side.

 Hi Sir,

the problem resolved completely, value or address of setpoint had not problem, it needs to do BIT 11 of Control word= 1 to select fW or BW direction of rotation. without selection of direction drive doesnt give the setpoint.

thank you so much for sending me your useful datas.