Teledyne 9110TH - Nitrogen Oxides Analyzer - Manual (Page 178)

Model 9110TH NOx Analyzer Operating Instructions
Teledyne Analytical Instruments 158
Figure 4-18: APICOM Remote Control Program Interface
APICOM is included free of cost with the analyzer and the latest versions can also be
downloaded for free at http://www.teledyne-api.com/software/apicom/.
4.15.3. ADDITIONAL COMMUNICATIONS DOCUMENTATION
Table 4-33: Serial Interface Documents
Interface / Tool Document Title Part Number Available Online*
APICOM APICOM User Manual 039450000 YES
Multi-drop RS-232 Multi-drop Documentation 021790000 YES
DAS Manual Detailed description of the DAS. 028370000 YES
* These documents can be downloaded at http://www.teledyne-api.com/manuals/
4.15.4. USING THE 9110TH/M WITH A HESSEN PROTOCOL NETWORK
4.15.4.1. General Overview of Hessen Protocol
The Hessen protocol is a multidrop protocol, in which several remote instruments are
connected via a common communications channel to a host computer. The remote
instruments are regarded as slaves of the host computer. The remote instruments are
unaware that they are connected to a multidrop bus and never initiate messages. They