PURPOSE OF LIMS
The LIMS (Laboratory Information Management System) is a global term describing that you need to collect all the data and manage, correlate, reject and compute the results. Whoa!
A more practical approach is that you need to connect the calorimeter to a computer and get the data in to computer with a minimum of fuss.
The LIMS software on your central computer is different in all laboratories and the operating requirements as well. We have made the LIMS interface in the CAL3K as flexible as possible and this has resulted in some complexity I hope this section explains.
LIMS DATA FORMAT
When we use the word LIMS we imply a specific data format applicable to results. The CAL3K has the following formats, which can be set in the "PORT DEFINITION":
D1 LIMS FORMAT F
This is a full format, but excludes the temperature rise data. Not for printing!
D1 LIMS FORMAT X
This is a printer friendly output.
D1 LIMS FORMAT Y
This is printer friendly as well.
D1 LIMS FORMAT Z
This format is not for printing, but includes the temperature rise data.
The CAL3K has two RS232 ports designated D1 and D2. The D1 port is enabled for LIMS (and/or printer) operation and the baud rate can be set to 1.2 to 115.2Kb.
The port designation is done on a PC via the USB interface:
|D1 LIMS APPROVAL||D1 STATS ENABLE|
|D1 REAL TIME DATA FORMAT A||D1 REAL TIME DATA FORMAT B|
|D1 RT CUST HEADER||D1 RT PARA HEADER|
|D1 LIMS FORMAT F||D1 LIMS FORMAT X|
|D1 LIMS FORMAT Y||D1 LIMS FORMAT Z|
The STATS output is not for LIMS operation unless a printer is used. The "REAL TIME" (RT) outputs provide data DURING a determination. The data is mostly temperature and thus NOT suitable to LIMS.
The LIMS data handling can take the following forms:
DIRECT UNSOLICITED OUTPUT
(No Approve, One of the F, X, Y, Z formats)
The result (in LIMS format F, X, Y, Z) is transmitted when it becomes available after a determination. The port is blind for incoming traffic.
APPROVED UNSOLICITED OUTPUT
The result must be approved first. This is done via any other port and a computer software. The unapproved result(s) are displayed, and can be rejected or approved manually. Once approved the results are output to the D1 port in the F, X, Y, Z format. The designated port is blind for incoming traffic.
This method requires a software program which scans the port regular every hour/day and retrieved the accumulated results via the D2 port, or the D1 port if nothing is enabled. The software program issues a command to the CAL3K and the CAL3K replies with the latest results in the "Y" format. Once the software program has saved the result to a spreadsheet (file) it marks the result in the CAL3K as "captured" and the CAL3K replies with the next "not captured" result.
MANUAL APPROVAL OF RESULTS
A result can be read from the keyboard. If it is acceptable it is released to the D1 port by pressing the F8 function key. The result is not marked!
Summary : The unsolicited methods are easy but a result can get "lost" when the central computer is not listening. The scanned methods are more difficult because they require that the central computer runs regularly and scans the CAL3K.
Unsolicited LIMS data: The result data is sent to the port ONCE only after the determination is done. No acknowledge or demand is required, which implies that the port must be active and a suitable driver (Software) must be running on the LIMS receiver to capture the data. The result is also stored in memory for backup.
Solicited LIMS data: This is achieved via a command which loads the LIMS results on to the commanding port. The computer issues this command regular every hour/day and the CAL3K replies with the results which is has accumulated in the meantime.
LIMS HARDWARE CONNECTIONS RS232
The CAL3K has a standard D9 RS232 output WITHOUT control signals.
|CAL3K||D9 female:||Pin 2||TX output|
|Pin 3||RX input|
|Pin 5||Ground, Shield|
|Pin 9||DO NOT USE! Contains +5V for wireless connections|
|Other pins are open|
|RS232 PORT DETAILS:||115.2Kb, 8 bit data, no parity, no handshake|
LIMS HARDWARE CONNECTIONS WIRELESS
This uses standard BLUETOOTH wire replacement modules, operating on 115.2Kb. Two modules are required, and the modules must be configured for each other with the on-board pen tip switches.
The CAL3K module has a MALE RS232 D9 connector and the PC module has a USB (A) type connector. The supplied driver converts the USB port to a ‘virtual’ RS232 port.
The dds part number for the configured ‘Wire replacement’ modules is: WIRELESS-RS232-USB
The LIMS (Laboratory Information Management System) output must be enabled on the D1 port via the PORT DEFINITION. The data port D1 has the following specification: RS232, 8 bit, no parity, 1.2 to 115.2Kb.Learn More