C-Link Protocol Commands
Record Layout Definition
Thermo Fisher Scientific
Model 15
i
Instruction Manual
B-47
The second line of the layout response is the binary parameter list for
parsing the fields from a binary response. Parameters MUST be separated
by spaces, and the line is terminated by a '\n'. Valid fields are:
t - parse a time specifier (2 bytes)
D - parse a date specifier (3 bytes)
i - ignore one 8-bit character (1 byte)
e - parse a 24-bit floating point number (3 bytes: n/x)
E - parse a 24-bit floating point number (3 bytes: N/x)
f - parse a 32-bit floating point number (4 bytes)
c - parse an 8-bit signed number (1 byte)
C - parse an 8-bit unsigned number (1 byte)
n - parse a 16-bit signed number (2 bytes)
N - parse a 16-bit unsigned number (2 bytes)
m - parse a 24-bit signed number (3 bytes)
M - parse a 24-bit unsigned number (3 bytes)
l - parse a 32-bit signed number (4 bytes)
L - parse a 32-bit unsigned number (4 bytes)
There is an optional single digit
d
which may follow any of the numeric
fields, which indicates that after the field has been parsed out, the resulting
value is to be divided by 10^
d
. Thus the 16-bit field 0xFFC6 would be
interpreted with the format specifier 'n3' as the number -0.058.
The subsequent lines in the erec layout response describe the appearance of
the full panel. The full instrument panel as it appears on the screen has two
columns of lines. Each line is composed of three major components: (1) a
text field, (2) a value field, and (3) a button. None of these three
components is required. The text field contains statically displayed text.
The value field displays values which are parsed out of the response to a
erec command. It also displays, though background changes, alarm status.
The button, when pressed, triggers input from either a dialog box or a
selection list. There are five kinds of buttons, B, I, L, T, and N.
Each line in the layout string corresponds to one line on the display. The
layout string describes each of the three major fields as well as translation
mechanisms and corresponding commands.
The first field in the layout string is the text. It is delimited by a ':'. The
string up to the first ':' will be read and inserted in the text field of the line.
Format Specifier for
Binary Responses
Format Specifier for
Erec Layout
Text
