Theodor Friedrichs COMBILOG 1020, Hardware Manual

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Hardware Manual COMBILOG 1020
105
11.4 Output Format
The data format can be user defined by means of configuration
software
COMBILOG.EXE . The datalogger adjusts the data for-
mats accordingly and makes sure that the data are available in
the selected unit.
For transmission in ASCII- and PROFIBUS-format, the format
settings listed in table 11.2 and 11.3 can be chosen. By transmis-
sion in MODBUS-format the output format (integer or real) is rec-
ognised automatically (table 11.4). The Coding of a real value in
MODBUS- and PROFIBUS-format is as follows:
Coding of the real value:
x = s ee...ee mmm.....mmm
Value:
( ) ,
− ⋅ ⋅
−
1 2 1
127 S e
m
# : <1> <- 8 -> <----- 23 ---->
Value (0 < e < 255): (-1)
S
*2
e-127
*1,m
Value (e=0): (-1)
S
*2
e-126
*0,m
format settings range of values
unit dependent on sensor
field length 1 . . . . . . . . . . . . . . . . . . 8
decimals 0 . . . field length-1 (max. 6)
Table 11.2 Format settings for transmission in ASCII-format
format settings length range of values
b o o l 1 byte (dec 0: FALSE) and (dez 255: TRUE)
integer 2 byte
(dec - 32768)
≤
i
≤
(dec +32767)
r e a l 4 byte
(dec - 2
129
)
≤
x
≤
(dec + 2
129
)
SET 8 1 byte
(dec 0)
≤
i
≤
(dec 255 )
Table 11.3 Format settings for transmission in PROFIBUS-format