System Messages - Numerical List eV+Language Reference Guide, v2.x, 18319-000 Rev A Page 670 Code Message Text -510 *Data checksum error* -511 *Input block error* -512 *File format error* -513 *File not opened* -514 *File or subdirectory name error* -515 *Already attached to logical unit* -516 *Not attached to logical unit* -517 *I/O queue full* -518 *Illegal I/O channel number* -519 *Driver internal consistency error* -520 *Invalid disk format* -521 *Wrong disk loaded* -522 *Data error on device* -523 *Bad block in disk header* -524 *Communications overrun* -525 *Illegal I/O redirection specified* -526 *No data received* -527 *Illegal user LUN specified* -528 *Illegal record length* -529 *Output record too long*