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Communications Setup and Operation Teledyne API - T100 UV Fluorescence SO2 Analyzer
134
6.2.1. COMMUNICATION MODES
Either of the analyzer’s serial ports (RS232 or COM2 on rear panel) can be configured
to operate in a number of different modes, which are described in .
Table 6-1: COMM Port Communication Modes
MODE
1
ID DESCRIPTION
QUIET
1
Quiet mode suppresses any feedback from the analyzer (DAS reports, and warning
messages) to the remote device and is typically used when the port is communicating with
a computer program such as APICOM. 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 program, such as APICOM.
HESSEN
PROTOCOL
16
The Hessen communications protocol is used in some European countries. Teledyne
API’s part number 02252 contains more information on this protocol.
E, 7, 1
2048
Allows the COMM port settings to be set between either
No parity; 8 data bits; 1 stop bit (ON/OFF)
to
Even parity; 7 data bits; 1 stop bit (ON/OFF)
RS-485
1024
Configures the COM2 Port for RS-485 communication. RS-485 mode has precedence
over Multidrop mode if both are enabled. When the COM2 port is configured for RS-485
communication, the rear panel USB port is disabled.
SECURITY
4
When enabled, the serial port requires a password before it will respond. 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 sending 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
Improves data transfer rate when one of the COMM ports.
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 instructed to by Teledyne API’s Technical Support personnel.
06807C DCN6650