MULTIDOS
RS232 Interface
Application Constancy Check
D177.131.2/0
15
9.2 Data telegrams
The response to a data telegram consists of various fields, separated by semicolons. The fields contain pa-
rameters and text.
9.2.1 Description of parameters
cc
Channel number, consisting of two characters. Valid values:
01 to 12or the channels 1 to 12
m
Actual measuring mode. Valid values: 0
Þ
Dose or Charge, 1
Þ
Doserate or Current
u
unit of measurement. Parameter
x
: 1 = Ampere, 2 = Gy/s, 3 = Gy/min, 4 = Gy/h
ttttt.n
Elapsed measurement time. Consists of 7 characters. Small numbers are right justified, with
leading spaces.
n
can take the values 0 or 5.
If the maximum measurement time of 64800s is exceeded, OL••• will be transmitted.
sss
Measurement status. Valid values: RES, STA, HLD, INT, RUN, NUL, ERR.
FL
Global flags. A two digit number, whose bits, when set to one, signal the following:
.0
Þ
any of all channels is overloaded
.1
Þ
math error in any channel
.2
Þ
MULTIDOS data acquisition error
.3
Þ
MULTIDOS HVerror
.4
Þ
MULTIDOS electrically uncalibrated
.5
Þ
MULTIDOS electrically uncalibrated
±m.mmm
mmm
Mantissa of the measured value. This field consists of 9 characters. Smaller numbers are right
justified, with leading spaces. Positive numbers use a space character instead of the minus
sign.
If the limits of representation (±999.9E+20) are exceeded, +0L••• or -0L••• will be transmit-
ted, depending on the sign.
E±ee
Exponent of the measured value. Two digit number, with leading zeroes if necessary. The sign
is always transmitted, either as + or -.
ma
highest channel number for data transmission with DA telegram
Valid values: 01 to 12.
bbbbb
Block check sequence of the response. This is a five digit number, representing a 16 bit un-
signed integer, with leading zeroes if necessary.
The block check sequence is calculated starting from the first character of the response up to
the character preceding
bbbbb
and must be equal to the value of
bbbbb
.
9.2.2 Data telegrams
Telegram
Response
DA;
ma
DA;
ma
;
ttttt.n
s
;m;u
;
Kbbbbb
Reads the measured values of channels
1
to
ma
K
contains the measurement data and consists of
ma
parts:
FL;±m.mmmmmm
E
±ee
;
K
contains no channel numbers, the data is transmitted in the order from channel 1 to channel
ma
.
Telegram
Response
D;
cc
D;
cc;ttttt.ns;m;u;FL;±m.mmmmmm
E
±ee
;bbbbb
Reads the measured value of a single channel.
