[John_B]

Hello,

I have recently taken over a shop with an old Mori with Fanuc 10m control that has an odd error that has stumped me. I am repeatedly getting the error "SR 591 TV ERROR" which is described as incorrect number of characters in one block in the manual.
We haven't changed a thing (I wrote down the comm settings 2 months ago to prevent things like this from happening) and I'm trying to send a program that was ran on this very control recently so there shouldn't be anything failing.

Anyone have any ideas here???? Thanks in advance,

John B

[Al_The_Man]

Probabally someone has turned the TVC (T.V. check) on, this can be turned off on the setting screen or bit #0 of Parameter 0000 set to 0
Also set bit #1 P0000 to 0 (CTV).
Al.

[John_B]

Thanks, that took care of that issue! Unfortunately that has exposed another one that is real fun. Now the reception of programs halts after about 50 lines and then I have to type in the rest manually, and I can't transmit at all... checked all the port settings and such and have no other programs in memory to consume any of the space.

Anyone had this one?

[Al_The_Man]

Unless there is something wrong with the transmit IC then it could be Hardware Handshake,
I would use a 3 wire cable with the HWHS jumpered out.
if you are not already.
Also make sure your program is set to XON,XOFF (software handshake).
Make a cable like the PDF attached for the 18M, ignore the settings page.
Al.

[GEM]

Had this problem on an old Okuma with 5000M control, eventually tracked it down to a problem with the Bubble Memory. Much cheaper to punch in the last bit if you have a short program.

Always worth trying a lower Baud rate. I always use 4800 on all our machines, Parameter 5112 to a 10. It is a nice steady rate that has never failed me when there is not a hardware problem.

Do you get any errors come up when this happens?, if handshaking is not correct, the NC might be sending a Stop signal, to allow it to deal with what it has received, but your comms software might be carrying on chucking data out.
GEM