User manual WTS Ver.1.16
Seite 35 von 52
13 CONTINUOUS TRANSMISSION PROTOCOL TO REMOTE DISPLAYS
Using this protocol, the instrument transmits, in continuous, the weight to remote displays;
the communication string is transmitted 10 times per second. Following communication
modes available (see paragraph SERIAL COMMUNICATION SETTING):
-
: communication with remote displays series RIP5/20/60, RIP50SHA, RIPLED;
remote display shows the net or gross weight, depending on the remote display
setting.
-
: communication with remote displays series RIP6100, RIP675, RIP6125C;
remote display shows the net or gross weight, depending on the remote display
setting.
-
: communication with remote displays series RIP6100, RIP675, RIP6125C.
The instrument sends the following string to the remote display:
&NxxxxxxLyyyyyy\ckckCR
where:
& = 1 initial string character (38 ASCII).
N = 1 character of net weight identification (78 ASCII).
xxxxxx = 6 characters of net weight or PEAK if present (48
÷
57 ASCII).
L = 1 character of gross weight identification (76 ASCII).
yyyyyy = 6 characters of gross weight (48
÷
57 ASCII).
\ = 1 character for separation (92 ASCII).
ckck = 2 ASCII control characters calculated considering that the characters
between “&” and “\” are excluded. The control value is obtained by carrying out the XOR (or
exclusive) operation for the 8 bit ASCII codes of the characters considered. Character
expressed in hexadecimal is thus obtained, with 2 digits which may acquire values from “0”
to “9” and from”A” to “F”. “
ckck” is the ASCII code of the two hexadecimal digits.
CR = 1 character for string end (13 ASCII).
In case of negative weight, the first character on the left acquires the value « - » (minus sign -
ASCII 45).
If the protocol on
has been set, the decimal point at the position shown on the
instrument's display can also be transmitted. In this case, if the value exceeds 5 digits, only
the 5 most significant digits are transmitted, while if the value is negative, no more than the 4
most significant digits are transmitted. In both cases, however, the decimal point shifts
consistently with the value to display.
If
has been set, in addition to what stated in
protocol, the instrument transmits
the prompt
every 4 seconds in the gross weight field, if on the instrument, it has been
carried out a net operation (see paragraph SEMI-AUTOMATIC TARE (NET/GROSS)).
In case of weight value is under -99999, the minus sign (‘-‘) is sent alternated with the most
significant figure.
In case of error or alarm, the 6 characters of the gross and net weight are replaced by
the messages found in the table of the ALARMS.
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