Additional Communications Documentation; Using The T100 With A Hessen Protocol Network - Teledyne T100 Instruction Manual

Teledyne ML - T100 UV Fluorescence SO2 Analyzer

5.3.3. ADDITIONAL COMMUNICATIONS DOCUMENTATION

Interface / Tool
APICOM
DAS Manual
* These documents can be downloaded at http://www.teledyne-ml.com/manuals/.

5.3.4. USING THE T100 WITH A HESSEN PROTOCOL NETWORK

5.3.4.1. GENERAL OVERVIEW OF HESSEN PROTOCOL
Figure 5-28:
APICOM is included free of cost with the analyzer and the latest versions can also be
downloaded for free at http://www.teledyne-ml.com/software/apicom/.
Table 5-12: Serial Interface Documents
Document Title
APICOM User Manual
Detailed description of the DAS
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 Hessen protocol
messages. They only respond to commands from the host computer and only when they
receive a command containing their own unique ID number.
The Hessen protocol is designed to accomplish two things: to obtain the status of remote
instruments, including the concentrations of all the gases measured; and to place remote
instruments into zero or span calibration or measure mode. ML's implementation
supports both of these principal features.
Remote Operation & Advanced Features
APICOM Remote Control Program Interface
Part Number Available Online*
058130000 YES
028370000 YES
163