User's Manual

545C Operations Manual

02/10/2012 Prerelease DCN 00001789-A

a 16-bit binary value for transmission, then converted to engineering units

by the Data Center or Host software.

Some date loggers have a complex and non-configurable interface protocol,

and cannot meet any of the currently implemented protocols, but they can

output data reports on a serial port as if it were connected to a line

printer. The GENERIC data logger driver has been created for this type of

interface. Some things can be setup by user commands to configure the

report parsing, within a limited set of constraints, and allow the MCC-545C

to create SDATA type messages from the ASCII text reports.

The following sections describe what can be done to adapt the MCC-545C

to a variety of report formats.

Typical Report Formats

A typical report printed by a data logger has one line, or a set of lines for

each report. There are usually two types, single-line reports, and multiple-

line reports. An example of each type would be as shown below:

Single line report examples:

123.4 19.8 33 99 -1089.45 ...<cr><lf>

10/14/02 09:15:00 +123.4 +19.8 +33 +99 -1089.45 ...<cr><lf>

Note that the report ends with carriage return and linefeed characters, and

may or may not display a date and/or time. The data fields are usually

separated by blanks, and the data values may or may not contain a sign or

decimal point. The line is usually output by the data logger as the report is

placed into the devices' memory in real-time. There is no provision for

error checking, but if the serial port cable is wired correctly with shielding,

etc., it may be reliable enough.

Multiple line report examples:

No Time Tag With Time Tag With Sensor Labels

123.4<cr><lf>

10/14/02 09:15:00<cr><lf>

Date/Time: 10/14/02 09:15:00<cr><lf>

19.8<cr><lf>

+123.4<cr><lf>

AC Voltage

+123.4<cr><lf>