ELZAB S.A.
User Manual CAT 27 scales series
21
The communication with external devices can be affected by functioning of the scale in the
situations like: unstable result, overloading and under loading of the scale, transmission mode
settings or the minimum result settings. The scale can react for those states in different ways
depending on its settings.
All the communication parameters can be changed in the
USER MENU.
They are permanently stored
in the non volatile scale memory. The factory settings can be reset by using the
RESTORE TO
FACTORY SETTINGS
function. The factory settings allow the scale to cooperate with every cash
register produced by ELZAB SA factory which was approved by the Ministry of Finance since 2001.
6.1.
Configuration of the communication parameters of the scale
Configuration of the communication parameters is on choosing an appropriate protocol by using
the
PROTOCOL TYPE
function. Selection of the protocol automatically sets default transmission
parameters for given protocol (speed, number of data bits, number of stop bits and parity). If the
scale is working with the customized communication settings the transmission parameters can be
changed manually by the use of the
TRANSMISSION SPEED
and
TRANSMISSION PARAMETERS
functions.
If the protocol
ELZAB EXTENDED
was selected, the result from the scale may contain both the
weight indication and the indication of the unit price and the amount. In this case the response
format is set in the
RESULT COMPONENTS
test. The
AUTOMATICALLY
setting means that the
scale response format depends on the current unit price of the weighted goods. If the unit price is
equal to 0.00 then there is sent only the information about the weight, otherwise there is sent the
full information about the load containing the weight, the unit price and the amount.
6.2.
Description of the ELZAB protocol
6.2.1.
Reading the weight, price and amount
6.2.1.1.
Request of the stable result
Byte No.
1
2
3
4
5
Symbol
ESC
M
ETX
-
LF
ASCII (hex) code
0x1B
0x4D
0x03
0x61
0x0A
The scale is waiting for the stabilization of the result. If within the specified time (set in the
STABILITIY WAITING TIME
) the result will stabilize it will be transmitted. If within that time the
result will not stabilize the request will be canceled and if in the
FRAME SENDING
function the
STABILE AND UNSTABLE
parameter was set there will be sent the answer frame containing blank
spaces in place of the result digits.
The byte No. 4 decides in what format will be sent the weighing result:
Byte No. 4
Format of the result
0x61
Basic or extended format depending on settings chosen in the menu of
the scale
0x71
basic format
0x81
extended format
When the scale is operating in the scales system the byte No. 5 takes the form of:
The scale No. in the scales system
Byte No. 5
Scale No. 1
0x0A
Scale No. 2
0x1A
