Campbell Hausfeld Serial I/O Interface SDM-SIO4 - Manual (Page 22)

SDM-SIO4 User Guide
3-6
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Convert a location sent into a 16-bit binary word. If this option is selected an
extra ASCII character/delimiter can be added to the end of the 16-bit word
sent.
See Section 5 – ‘Programming the Datalogger’.
3.3.2 Output Format Strings
These allow either just long strings to be sent from the SDM-SIO4 or a
combination of string data plus data from a datalogger input location. This type of
format is normally set up from the ‘command line’. The user definable strings are
referenced by a number in the range 0..255. The string is entered as a series of the
following formatter commands:
•
<space> Send ASCII space.
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bn Send a binary number received from the datalogger to the port. ‘n’ can be
1, 2 or 3 bytes, i.e. 8-, 16- or 24-bit. If n=4 then it is direct Campbell
Scientific floating point format. If the formatter string asks for more
values than the datalogger sends then the SDM-SIO4 sends ‘*’
characters.
•
fn:n Send a left-hand justified, formatted ASCII floating point number to the
port. The first ‘n’ is the field width in characters and the second ‘n’ is the
number of decimal places to use within the field width. If the integer part
of the ‘n’ number is bigger than the field width, the SDM-SIO4 still sends
it even though it is longer than the set field width. If the formatter string
asks for more values than the datalogger sends (because Instruction 113
specifies fewer values) then the SDM-SIO4 sends a number of ‘*’
characters to the port (e.g. for a field width of 4 it sends ****). Minimum
field width 2 digits, maximum field width 15 characters, maximum
number of decimal places 8.
•
gn Error detection – start of signature calculation for transmitted data – see
Section 6.
•
Gn Error detection – marks end of signature calculation for transmitted data
– see Section 6.
•
hn Send an ASCII hex number to the port. ‘n’ can be 1, 2 or 3 bytes
converted, i.e. an 8-, 16- or 24-bit number. If the formatter string asks
for more values than the datalogger sends then the SDM-SIO4 sends ‘*’
characters.
•
i[ ] Send the string between the brackets [ ] to the port. Up to 255 ASCII
characters can be sent. (See Section 4.2 – Entering Commands).
•
J Send line feed.
•
M Send carriage return.
•
s Stop formatting.
•
zn Send a pre-stored string to the port. ‘n’ is the user-defined string number
0-255 or a fixed string 256-511.
Table 4, below, shows all the defined Fixed Strings.