Bematech LR2000 Programming Manual page 36

 Frequent write command executions may damage the NV memory. Therefore, it is
[Notes]
recommended to write the NV memory 10 times or less a day.
The printer performs a hardware reset after the procedure to place the image into
the NV memory. Therefore, user-defined characters, downloaded bit images, and
macros should be defined only after completing this command. The printer clears
the receive and print buffers and resets the mode to the mode that was in effect at
power on. At this time, DIP switch settings are checked again.
This command cancels all NV bit images that have already been defined by this
command.
  F rom the beginning of the processing of this command till the finish of hardware
reset, mechanical operations (including initializing the position of the print head
when the cover is open, paper feeding using the FEED button, etc.) cannot be
performed.
  D uring processing of this command, the printer is BUSY when writing data to the
user NV memory and stops receiving data. Therefore it is prohibited to transmit the
data, including real-time commands, during the execution of this command.
  N V bit image is a bit image defined in non-volatile memory by FS q and printed by
FS p.
 I n standard mode, this command is effective only when processed at the beginning
of the line.
This command is effective when 7 bytes <FSyH> of the command are processed
normally.
 W hen the amount of data exceeds the capacity left in the range defined by xL, xH,
yL, yH, the printer processes xL, xH, yL, yH out of the defined range.
 I n the first group of NV bit images, when any of the parameters xL, xH, yL, yH is out
of the definition range, this command is disabled.
 I n groups of NV bit images other than the first one, when the printer encounters xL,
xH, yL, yH out of the defined range, it stops processing this command and starts
writing into the NV images. At this time, NV bit images that haven't been defined
are disabled (undefined), but any NV bit images before that are enabled.
The d indicates the definition data. In data (d) a 1 bit specifies a dot to be printed
and a 0 bit specifies a dot not to be printed.
This command defines n as the number of a NV bit image. Numbers rise in order
from NV bit image 01H. Therefore, the first data group [xL xH yL yH d1...dk] is NV
bit image 01H, and the last data group [xL xH yL yH d1...dk] is NV bit image n. The
total agrees with the number of NV bit images specified by the command FS p.
The definition data for an NV bit image consists of [xL xH yL yH d1...dk].Therefore,
when only one NV bit image is defined n=1, the printer processes a data group [xL
xH yL yH d1...dk] once. The printer uses ([data: (xL xH
[header :4]) bytes of NV memory.
The definition area in this printer is a maximum of 192K bytes. This command can
define several NV bit images, but cannot define bit image data whose total capacity
[bit image data header] exceeds 192K bytes.
LR2000 Programming Manual V1.2
256)×(yL yH 256)×8]
× ×