Setup; Transmission Termination; Interface Commands - Fluke 7312 User Manual

Triple point of water maintenance bath
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7312 TPW Maintenance Bath
User's Guide
10.2.1
10.2.1.1
10.2.1.2
10.2.2
10.3
60

Setup

To use the IEEE-488 interface connect an IEEE-488 standard cable to the back
of the bath, set the device address, and set the transmission termination
character.
To enter the IEEE-488 parameter programming menu, press the "EXIT" and
the "SET" button simultaneously and then release to enter the secondary menu.
Press the "SET" button repeatedly until the display reaches "PrObE". Press the
"UP" button repeatedly until the IEEE-488 interface menu is indicated with
"IEEE". Press the "SET" button to enter the IEEE-488 parameter menu.
IEEE-488 Address
The IEEE-488 address is prompted with "AddrESS". Press the "SET" button to
program the address. The default address is 22. If necessary, change the device
address of the bath to match the address used by the communication equip-
ment. To change the device address, press the "UP" or DOWN" button and then
the "SET" button.

Transmission Termination

The IEEE-488 transmission termination is prompted with "EOS". Press the
"SET" button to access the termination character. The present setting is dis-
played. Press the "UP" or "DOWN" button to change the setting. Press the
"SET" button to save the new selection.
IEEE-488 Operation
Commands may now be sent via IEEE-488 interface to read or set the tempera-
ture or access other controller functions. All commands are ASCII character
strings and are terminated with a carriage-return (CR, ASCII 13). Interface
commands are listed below.

Interface Commands

The various commands for accessing the bath controller functions via the digi-
tal interfaces are listed in this section (see Table 4). These commands are used
with both the RS-232 serial interface and the IEEE-488 GPIB interface. In ei-
ther case the commands are terminated with a carriage-return character. The in-
terface makes no distinction between upper and lower case letters, hence either
may be used. Commands may be abbreviated to the minimum number of let-
ters, which determines a unique command. A command may be used to either
set a parameter or display a parameter depending on whether or not a value is
sent with the command following a "=" character. For example, an "s"<cr> re-
turns the current set-point and an "s=50.00"<cr> sets the set-point to 50.00
degrees.
In the following list of commands, characters or date within brackets, "[" and
"]", are optional. A slash, "/", denotes alternate characters or data. Numeric

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