Sysmex XN-550 / XN-2000 Bi-Directional LIS Interfacing Guide
Complete engineering specification, HL7/ASTM protocols, pinouts, and parameter mapping for Sysmex XN-550 / XN-2000 on AILS Cloud LIMS.
1. Instrument Overview & Interfacing Architecture
The Sysmex XN-550 / XN-2000 is a high-performance hematology instrument designed for diagnostic laboratories and hospital health networks. Integrating this analyzer directly with AILS Cloud LIMS eliminates manual transcription delays, prevents typographical patient identification errors, and automatically enforces Westgard delta check algorithms.
AILS automatically generates worklist queries (QRY^Q02 / ASTM orders) mapped to patient accession barcodes and pushes test instructions directly to the instrument sample tray.
Raw OBX / Result records are parsed instantly within 200 milliseconds, flagged for abnormal reference ranges, and linked to pathologist digital signature queues.
2. Hardware Connection & Communication Settings
3. Sample Message Wire Frame
Below is a real-world communication frame transmitted between the Sysmex XN-550 / XN-2000 and AILS LIS middleware:
MSH|^~\&|XN-550|Sysmex|AILS_LIMS|LAB_MAIN|20260815123500||ORU^R01|MSG009830|P|2.5 PID|1||P982345||Smith^Sarah||19920822|F OBR|1|ORD982345|ACC2026081502|CBC5D^CBC with 5-Diff|||20260815123000 OBX|1|NM|6690-2^WBC^LN||6.45|10*3/uL|4.0-11.0|N|||F OBX|2|NM|718-7^HGB^LN||13.8|g/dL|12.0-16.0|N|||F OBX|3|NM|777-3^PLT^LN||280|10*3/uL|150-450|N|||F OBX|4|NM|751-8^NEU%^LN||62.4|%|40.0-75.0|N|||F OBX|5|NM|731-0^LYM%^LN||28.1|%|20.0-45.0|N|||F
4. Parameter & LOINC Standard Code Mapping
| Instrument Code | LOINC Code | Clinical Parameter Name | Standard Units | Default Reference Range |
|---|---|---|---|---|
| WBC | 6690-2 | White Blood Cells | 10*3/uL | 4.0 - 11.0 |
| HGB | 718-7 | Hemoglobin | g/dL | 12.0 - 16.0 |
| PLT | 777-3 | Platelets | 10*3/uL | 150 - 450 |
| NEU% | 751-8 | Neutrophils % | % | 40.0 - 75.0 |
| LYM% | 731-0 | Lymphocytes % | % | 20.0 - 45.0 |
5. Biomedical Engineering Tips & Common Gotchas
Ensure auto-sampler rack barcodes are clean and aligned with the optical sensor.
AILS Gateway returns ACK^R01 within 200ms to avoid retry timeouts on the XN-550 IPU.
Check that the IPU network mask and default gateway match the lab subnet.
Frequently Asked Questions: Sysmex XN-550 / XN-2000 Interfacing
Common biomedical engineering questions regarding connection, worklist setup, and data capture with AILS Cloud LIMS.
Q: How does the Sysmex XN-550 auto-sampler handle bi-directional worklists?
When a rack of closed vacuum tubes is loaded into the XN-550 sampler, the scanner reads each tube barcode and sends a QRY^Q02 query over TCP/IP. AILS Gateway replies with DSR^Q03 order details containing requested CBC or CBC+DIFF profiles.
Q: Can Sysmex XN-550 communicate over ASTM instead of HL7?
Yes. While HL7 v2.5 is the preferred modern standard, XN-550 also supports ASTM E1381/E1394 over TCP/IP socket. AILS Gateway natively decodes both formats.
Q: What happens if a sample has low platelet count on XN-550?
AILS Delta Check engine checks the PLT value against previous patient runs and triggers an automatic reflex smear review request if a sudden drop exceeding 50% is detected.
Q: How do you configure Sysmex XN-550 IP address for LIS connectivity?
On the XN-550 touchscreen IPU, navigate to System Settings -> Communication Settings -> Host Communication. Enter the IP of the AILS Gateway PC and set Port to 5001.
Q: Are XN-550 flags for immature granulocytes (IG) supported in AILS?
Yes. Absolute IG# and percentage IG% parameters along with abnormal morphology flags are parsed directly into dedicated clinical fields.
Connect Your Sysmex XN-550 / XN-2000 to AILS in Under 15 Minutes
Our specialized biomedical engineering team provides complete plug-and-play drivers, cable diagrams, and bi-directional test verification for the Sysmex XN-550 / XN-2000.