Teledyne 9110AH - Nitrogen oxides analyzer - Manual (Page 68)

TELEDYNE Model 9110AH NO
X
Analyzer Operator Manual, 01620, Rev. F
5-26
5.7.1 Setting up the RS-232 Interface
The baud rate is set from the front panel by SETUP-MORE-COMM-BAUD. Select the baud rate
appropriate for your application from 300 to 19,200. It is important to note that the other device
must have identical settings in order for the communications to work correctly.
Second is physical wiring of the analyzer to the other unit. We have incorporated into the
Analyzer LED's that signal the presence of data on the communications lines, and also a switch
which can easily re-configure the analyzer from DCE to DTE if necessary. In addition, the front
panel diagnostics allow test data streams to be sent out of the port on command. This flexibility
and diagnostic capability should simplify attaching our equipment to other computers or
printers. If problems occur, see the Troubleshooting Section 9.3.2.
Setup from the Front Panel
There are 3 additional RS-232 setups that can be done via the front panel.
1. Set the Instrument ID number by SETUP-MORE-COMM-ID, and enter a 4 digit number
from 0000-9999. This ID number is part of every message transmitted from the port.
2. Set the BAUD rate by SETUP-MORE-BAUD, then select the desired BAUD rate.
3. Set the RS-232 mode bit field in the VARS menu. To get to the variable press, SETUP-
MORE-VARS and scroll to RS-232_MODE, then press EDIT. The possible values are:
Table 5-9: RS-232 Port Setup - Front Panel
Decimal Value Description
1 Turns on quiet mode (messages suppressed)
2 Places analyzer in computer mode (no echo of characters)
4 Enables Security Features (Logon, Logoff)
8 Enables RS-232 menus display on M9110AH front panel display
16 Enable alternate protocol
32 Enable RS-232 multidrop protocol
NOTE
To enter the correct value, ADD the decimal values of the features you
want to enable. For example if LOGON and front panel RS-232
menus are desired, the value entered would be 4 + 8 = 12.