MULTIDOS
RS232 Interface
Application Linear Array LA 48
18
D177.131.2/0
±m.mmm
Mantissa of the measured value. This field consists of six characters. Smaller numbers are
right justified, with leading spaces. Positive numbers use a space character instead of the
minus sign.
Notes:
For channels 1 to 47 and if measurement against reference is used, this field may have the
„values“ >=1000 and <•5E-4
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 -.
For channels 1 to 47 and if measurement against reference is used, the exponent field will be
omitted. If the limits of representation are exceeded, •••• will be transmitted.
r
Setting of the reference selection. Valid values: 0 = no reference, 1 = referred to reference
chamber, 2 = referred to monitor signal.
mi
Number of that LA 48 channel having the smallest absolute value. Valid values: 01 to 47
ma
Number of that LA 48 channel having the largest absolute value. Valid values: 01 to 47
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
.
10.2.2 Single channel data
Telegram
cc
Response
Notes
D
cc
01 .. 47
Without reference: D
cc
;
m
;
ttttt
s;
sss
;
±m.mmm
E
±ee
;
f
;
FL
;
bbbbb
01 .. 47
With reference: D
cc
;
m
;
ttttt
s;
sss
;
±m.mmm
;
f
;
FL
;
bbbbb
1
R• or M•
D
cc
;
m
;
ttttt
s;
sss
;
±m.mmm
E
±ee
;
f
;
FL
;
a
;
bbbbb
2, 3
V1 or V4
D
cc
;
m
;
ttttt
s;
sss
;
±m.mmm
E
±ee
;
f
;
FL
;
bbbbb
4, 5
Reads the measured value of a single channel.
Notes:
1. For LA 48 channels, when using a reference, the exponent field is omitted (rational number, as displayed on
the measuring screen)
2. DR• or DM• is only allowed if the corresponding reference is activated. Otherwise the response will be E02.
3. The response contains the resolution of the channel additionally
4. This values always have an exponent field, independent from the reference setting
5. In both measuring modes the value of the measured high voltage is responded
Examples:
1. The measuring mode may be doserate, the measuring status may be HLD, no reference used, the measured
value of channel 14 at the HLD-time may have been 27.7mGy/s, MULTIDOS may show a HVError, the HLD
state has been entered after 31 seconds.
The response to the D14 telegram will be D14;1;•••31s;HLD;••27.7E-03;0;08;43712
(the block check sequence is fictitious)
2. The measuring mode may be dose, the reference chamber may be used as reference, whose measured
value of -1.4µGy may have a resolution worse than 1%. An interval measurement may be started but the
HLD state has not yet been reached, the actual measurement time may be 21 seconds. The 900 volts of the
ME 48 may be out of limits.
The response to the DR• telegram will be DR•;0;•••21s;INT;••-1.4E-06;0;16;2;00413
(the block check sequence is fictitious)
