DEAR SIR;

There have simotion d435 2dp and it connect with another 7 s110 via drive cliq .Noe the fault is one motor is not go to home position and other 6 motor goes to home position without error .
In simotion D sf bulb blink and when i go to diagnostic buffer in main drive ,there i check many incoming event alarm messages .

Fault DO 7 fault number 31885 fault value 0* 921
Fault DO 6 fault number 31885 fault value 0* c21
Fault DO 5 fault number 31885 fault value 0* e21
Fault DO 4 fault number 31885 fault value 0* 1221
Fault DO 3 fault number 31885 fault value 0* 1921
Fault DO 2 fault number 31885 fault value 0* 1621

On seven segment display 6 .

Sir can u help me .WHAT ARE THE POSSIBLE CAUSES FOR THAT ERROR .

Thank you . 

Please check motor connection.Motor should be connected or check the Supply.