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Commands
6 Commands
6.1 Command groups
The SIWAREX commands are divided into groups. The combining of the
commands into a group is done according to their functionalities.
Every command has a unique number. A command can be sent via various
interfaces (SIMATIC, SIWATOOL FTA, digital input).
Every time that a command is sent to SIWAREX FTA, a check must be made for
whether the command has been executed correctly. The data and operating errors
(synchronous errors) that are generated provide information on why the command
could not be executed.
The group Service- and adjustment commands is used during the
commissioning of the scale. As long as the scale is not adjusted, it can only be
used in service operation. Switching to service operation is indicated in the status
bits.
The group of Scale commands NAWI contains all commands that affect the
handling of a statistic scale. Normally, commands that have anything to do with the
operation of the SIWAREX FTA as a Non-Automatic Weighing Instrument
(e.g. zero setting, taring).
The extensive group of Scale commands AWI is used for controlling scale
processes. The basic behaviour of the SIWAREX FTA is defined one time by
defining parameters. In the defined operating mode, the individual scale
procedures are controlled by the commands from this command group.
The group of Log commands contains commands that control the log output to a
printer or the calibratable storage of the logs to the MMC.
Use of the Micro Memory Card MMC is controlled with commands from the
command group Micro Memory Commands.
After receiving a command, SIWAREX FTA checks for whether the command can
be executed. If the check results are negative, the user is informed of the cause by
an output of a "synchronous" message (see chapter
6-126
7 Messages and
Diagnostics).
SIWAREX FTA
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