Parr Instrument 6400 - Manual (Page 15)

Installation
6400 1
w w w . p a r r i n s t . c o m 13
Mettler 011/012 Interface
The ID field must contain
“S_” to indicate a stable
mass. The data field con-
tains the current mass, right
justified, with a decimal
point. The balance should
be configured to send con-
tinuously.
Sartorius Interface
The polarity field must con-
tain either a “+” or a space.
Leading zeros in the data
field are blanked, except
for the one to the left of the
decimal point. The stability
field must contain “g_” for
the calorimeter to accept a
mass. The balance should
be configured to transmit data upon receipt of
the following command string:
[ESC] P [CR] [LF]
Note: The automatic data output option
should not be used.
Generic Interface
The data field should con-
sist of 9 numeric characters
(0 through 9, +, - and space)
terminated with a carriage
return (CR). Leading zeros may be blanked as
spaces and are counted. Non-numeric charac-
ters are ignored and will reset the input buffer if
the data field has not been filled. Any characters
received after filling the data field and before the
carriage return are ignored.
Communication Connections
There is a Universal Serial Buss (USB) port at the
rear of the calorimeter.
The USB port is used to connect to external devices
such as a printer or balance. Multiple devices can be
attached by installing a USB hub.
The 6400 Calorimeter is also equipped with an RJ45
Ethernet port for connection to a computer.
The 6400 will also allow the user to specify the
IP addresses of one or more Balance Interface
devices on the network by selecting the Network
Data Device menu in the Communications Controls
menu. Balance Interface devices are polled from
device 1 to 15 for sample and/or spike weights when
the weight entry mode is set to Network.
Printer Connections
The printer settings are on the Communication
Controls Menu. The default parameters for the 6400
are set up for use with the Parr 1758 Printer.
Balance Connections
The 6400 Calorimeter supports input from 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 driv-
ers 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 deter-
mined 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 calo-
rimeter 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.
Field Length
ID 2
space 1
data 9
space 1
g 1
CR 1
LF 1
Field Length
polarity 1
space 1
data 8
space 1
stability 2
CR 1
LF 1
Field Length
data 8
CR 1