Epson MFJ-1278B manual Display class, Asyfrerr, Asyqover, Asyrxovr

ASYNC

CHARACTE ID

LINK

MONITOR TIMING S

MFJ-1278B MULTI-MODE OPERATIONAL COMMANDS

DISPLAY [class] Mode: All Immediate Command

Parameters:

class Optional parameter-class identifier, one of the following:

Displays asynchronous port parameters

Displays special characters

Displays ID parameters

Displays link parameters

Displays monitor parameters

Displays timing parameters

Displays a group of parameters such as memory buffer contents, CW parameters and parameters which affect the printing of graphics to the

printer and to the computer screen.

HEALTH displays 24 counters*

*The twenty four counters in the MFJ-1278B are 16 bits wide, and are ALWAYS initialized to 0000 on power up or "RESTART". These health counters are not listed in the standard command listing. Also when telling the MFJ-1278B to display with the DISP command they will not show there either. However, we have listed them here for your convenience.

ASYFRERR:

This is a health counter reflecting the number of hardware-detected asynchronous framing errors. Framing errors are not fatal. They merely indicate that the terminal attached to your MFJ-1278B is not configured correctly with regard to AWLEN/PARITY.

ASYQOVER:

Records the number of times received- connected packets have been rejected due to insufficient space in the buffer holding the data going to the terminal. No actual data loss occurs, provided the connection remains intact. ASYQOVER counts can be avoided by increasing the speed of the attached RS-232 terminal and/or printer. (SEE also SENTRNR)

ASYRXOVR:

Increases when the software does not service the asynchronous receiver in time. Indicates data from the user to the MFJ-1278B is being dropped. This error counter should never become non- zero under supported data rates.