70
Teledyne API T500U CAPS NO
2
Analyzer with NumaView™ Software
083730510A DCN8172
H
ESSEN
Hessen is a multidrop protocol, in which several remote instruments (slaves) are connected
via a common communications channel to a host computer. Slaves respond only to
commands sent by the host using their unique identification.
Important
Create a unique identification number for each instrument in
the multidrop chain via the Setup>Vars>Instrument ID menu.
The Hessen protocol is not strictly defined; therefore, while Teledyne API’s application is
completely compatible with the protocol itself, it may be different from implementations
by other companies.
HESSEN COM PORT CONFIGURATION
Configure the COM1/COM2 port for Hessen protocol through the
Setup>Comm>COM1[COM2] menu: select COM1[COM2] Protocol and press Edit to
select HESSEN, then press Accept.
Ensure that the communication parameters of the host computer are also properly set.
Figure 3-3. Serial Communication, Setting Hessen Protocol
Note
The instrument software has a 200 ms latency period before it
responds to commands issued by the host computer. This latency
should present no problems, but be mindful of issuing commands
to the instrument too frequently.
Summary of Contents for T500U
Page 2: ......