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Model 9110T NOx Analyzer Communications Setup and Operation
Teledyne Analytical Instruments 136
problems.
Such feedback is still available but a command must be issued to receive them.
COMPUTER
2
Computer mode inhibits echoing of typed characters and is used when the port is
communicating with a computer operated control program.
HESSEN
PROTOCOL
16
The Hessen communications protocol is used in some European countries. TAPI P/N
02252 contains more information on this protocol.
E, 8, 1
8192
When turned on this mode switches the COMM port settings from
No parity; 8 data bits; 1 stop bit to Even parity; 8 data bits; 1 stop bit.
E, 7, 1
2048
When turned on this mode switches the COMM port settings from
No parity; 8 data bits; 1 stop bit to Even parity; 7 data bits; 1 stop bit.
RS-485
1024
Configures the COM2 Port for RS-485 communication. RS-485 mode has precedence
over multidrop mode if both are enabled. Also, configuring for RS-485 disables the rear
panel USB port.
SECURITY
4
When enabled, the serial port requires a password before it will respond (see Section
5.5). The only command that is active is the help screen (? CR).
MULTIDROP
PROTOCOL
32
Multidrop protocol allows a multi-instrument configuration on a single communications
channel. Multidrop requires the use of instrument IDs.
ENABLE
MODEM
64
Enables to send a modem initialization string at power-up. Asserts certain lines in the
RS-232 port to enable the modem to communicate.
ERROR
CHECKING
2
128
Fixes certain types of parity errors at certain Hessen protocol installations.
XON/XOFF
HANDSHAKE
2
256
Disables XON/XOFF data flow control also known as software handshaking.
HARDWARE
HANDSHAKE
8
Enables CTS/RTS style hardwired transmission handshaking. This style of data
transmission handshaking is commonly used with modems or terminal emulation
protocols as well as by Teledyne Instrument’s APICOM software.
HARDWARE
FIFO
2
512
Disables the HARDWARE FIFO (First In – First Out). When FIFO is enabled, it
improves data transfer rate for that COMM port.
COMMAND
PROMPT
4096
Enables a command prompt when in terminal mode.
1
Modes are listed in the order in which they appear in the
SETUP MORE COMM COM[1 OR 2] MODE menu
2
The default setting for this feature is ON. Do not disable unless so instructed by Teledyne Customer Service personnel.
Communication Modes for each COMM port must be configured independently. To turn on or off the
communication modes for either COM1 or COM2, access the SETUP>MORE.[COM1 OR COM2]
menu, and at the COM1 [2] Mode menu press EDIT.