Parr Instrument 6400 - Manual (Page 13)

6400
Calorimeter Instruction Manual
2-7
Multiple Alternate Configurations
Printer Connections
The printer port settings are on the Communication Controls Menu: Printer Port
Communications Menu. The default parameters for the 6400 are set up for use with the
Parr 1757 Printer. Table 1 identifies and describes the pin-out for the RS-232 port.
Balance Connections
The 6400 Calorimeter supports input from the multiple balance types. Additionally, a
generic input driver is provided for communications with balances that do not conform to
the eight supported protocols. A new feature supported by all balance input drivers is the
ability to change the expected number of characters in the data field. The number of data
characters indicated for each of the drivers, below, are default values. This feature virtually
eliminates the need for balance input drivers to be re-written in the event the balance
manufacturer elects to alter the output string of a balance when new models are
introduced.
The format of an unknown balance can be determined by logging the balance output to
the printer attached to the calorimeter. Those protocols which send a command string to
the balance will do so while logging is active. In order for the logging to produce
meaningful results, the cable connecting the balance to the balance input port of the
calorimeter must be correctly wired or configured. In addition, the specifics of the data
frame, such as the baud rate, # of data bits, parity, # of stop bits and handshaking (if
used) must be the same for both the balance and the calorimeter.