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Data Transmission
Thermo Fisher Scientific
Sampling is valid and response will be given, if:
•
the <STX> is followed by the characters DA,
•
the address is correct or not existing,
•
the <ETX> is followed by two correct BCC-characters
•
or <ETX><BCC1><BCC2> is replaced by <CR>.
The following is an example for a valid inquiry at the device having the
address 5:
<STX>DA<CR>
<STX>DA005<CR>
<STX>DA<SP><SP>5<ETX><BCC1><BCC2>
<STX>DA<ETX>04
The data inquiry may comprise up to seven variables. As a consequence, the
response then contains the respective number of blocks, each block
beginning with the address and ending with [SFKT]. With each block, the
address will be incremented by 1.
The transmission of measured data is effected as response to the data
inquiry/data sampling (1). The format will be as follows (here in this case
with 2 variables):
<STX>MD0[n]<SP>
[Address]<SP>[measured value 1]<SP>[Status]<SP>[Serial
no.]<SP>[SFKT]<SP>
[Address+1]<SP>[Measured value 2]<SP>[Status]<SP>[Serial
no.]<SP>[SFKT]<SP>
<ETX><BCC1><BCC2>
[n]:
Number of variables
[Address]:
Device address set, 3 characters, leading zeros are transmitted
<SP>:
Space character
Data Protocols with Measuring Network Connection
Model 5030 SHARP Monitor Instruction Manual
RS-232 Commands
B-9
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