Chapter 7 — Commands
80 ESim for the PC4 and PF8 Printer Programmer’s Reference Manual
Example:
GRP20,10,4,32,h
The command above replies in hexadecimal format like the
example shown below.
GW - Store Graphics In Image Buffer
Purpose: This command is used to store binary graphics files directly in the
image buffer.
Syntax: GW p
1
,p
2
,p
3
,p
4
,“DATA”
.
Remarks: Use this command instead of GM for temporarily used graphics,
for example images that change between each label. Not only is
this method faster, but it also prolongs the life of the flash
memory as the graphics are downloaded directly to SRAM.
The firmware calculates exactly how much data to expect based
on
p
3
and p
4
.
00 FF FF 00 3F FF FF FE 5F FF FF FE 6F FF FF FE
77 FF FF FE 7B FF FF FE 7D FF FF FE 7E FF FF FE
FF 7F FF FF FF BF FF FF FF DF FF FF FF EF FF FF
FF F7 FF FF FF FB FF FF FF FD FF FF FF FE FF FF
FF FF 7F FF FF FF BF FF FF FF DF FF FF FF EF FF
FF FF F7 FF FF FF FB FF FF FF FD FF 7F FF FE FE
7F FF FF 7E 7F FF FF BE 7F FF FF DE 7F FF FF EE
7F FF FF F6 7F FF FF FA 7F FF FF FC 00 00 00 00
GW Command Parameter Descriptions
Parameter Description
p
1
X-position in printer dots
p
2
Y-position in printer dots.
p
3
Number of bytes across the graphic
(8 dots = 1 byte).
p
4
Number of dot rows going down the graphic.
“DATA” The graphic data in 1-bit (black and white) binary
format. First data-byte represent dots in upper left
corner and next data-byte next to the right. “1”
bits are white dot-positions and “0”-bits are black
dot-positions. The total amount of “DATA” bytes
are p
3
* p
4
.
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