Help with Serial Comm

[luis_gts]

Hello Every body

Im working on a retrofit of an Anayac CNC mill 1989, it has 3 140v DC servomotor, im using the new viper 200, but after connecting the motor to the drive i probe the communication betwen the drive and the PC using Hyperterminal, then i turned on the 12V power, and in the Hyperterminal screen appears the "LKR" but it does not allow me to write anything, even the ":" did not appear. I allready probe with 2 different PC`s but the result is the same!.

Any suggestion?

Thank you very much

Luis Mendoza

Mexico City

[Larken]

In hyperterm is the handshaking set to none? It should be.
9600 baud 8,1,N no handshaking. Maybe try another computer

Are you using a cable i supplied ?

larry K

[luis_gts]

iim using a custom cable that i made, i noticed that when i connect the encoder to the db9 the red led starts flashing, i think the encoders dont work well, i will change it for a newone and try again.

Luis

[luis_gts]

Hello Larry

I already have communication with the PC and the Viper Drive, now i tunned the motor, and everything goes fine, but whrn i probe it with mach 3 it loses the zero position!!! im using an incremental A and B channel encoder, i try to follow the error in the viper with the "M" command and it displays me diferent numbers betwen the M and S while the motor is moving but when it stops magically the erros appears as ZERO, but phisically the motor did not arrive ti the Zero position.

Any IDEa?


Luis

[Larken]

Are you using a differential encoder or single ended ?

[Larken]

Did you get the problem resolved ?