INSTRUCTION MANUAL
9
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7.1 Detailed LonG protocol description
Communication parameters: 8 bits, 1 stop bit, no parity, baud rate 4800bps,
initialising signal (data send order) – correspond to press
key
Computer
Scale:
S I
CR LF (53h 49h 0Dh 0Ah),
Scale
Computer: scale response according to description below (16 bytes):
Byte 1
- sign „-” or space
Byte 2
- space
Byte 3
4
- digit or space
Byte 5
÷
9
- digit, decimal point or space
Byte 10
- digit
Byte 11
- space
Byte 12
- k, l, c, p or space
Byte 13
- g, b, t, c or %
Byte 14
- space
Byte 15
- CR
Byte 16
- LF
Attention:
Network number different than zero (
SErIAL / nr
function) changes scale working mode: communication
with a computer is possible after logging the scale in with 02h scale number command. To log the scale out
use 03h command.
For example: Using a program to test RS232 interface ( program is available in
/ programy
komputerowe
) for scale number 1 please write:
$0201
to log in, then
SI
, and write:
$03
to close
communication
.
Asking about scale presence in system (testing scale connection with computer):
Computer
Scale: S J CR LF (53h 4Ah 0Dh 0Ah),
Scale
Computer: M J CR LF (4Dh 4Ah 0Dh 0Ah),
Displaying a inscription on scale’s display (text communicate from computer):
Computer
Scale: S N n n X X X X X X CR LF, nn-displaying time in seconds; XXXXXX-6 signs to
display
Scale
Computer: M N CR LF (4Dh 4Eh 0Dh 0Ah),
Scale tarring (calling
T
key press) :
Computer
Scale: S T CR LF (53h 54h 0Dh 0Ah),
Scale
Computer: without response,
Scale zeroing (calling
0
key press):
Computer
Scale:
S Z
CR LF (53h 5Ah 0Dh 0Ah),
Scale
Computer: without response,
Scale turning on / off (calling I/ key press):
Computer
Scale:
S S
CR LF (53h 53h 0Dh 0Ah),
Scale
Computer: without response,
Entering to special function menu (calling
MENU
key press):
Computer
Scale:
S F
CR LF (53h 46h 0Dh 0Ah),
Scale
Computer: without response,
