65
9-3-2. Selecting the operating mode
The operating mode is set by means of the MODE_BLK parameter group (page 66). The
Transducer Block supports the following operating modes:
AUTO (automatic mode)
OOS (out of service)
Note: The OOS block status is also displayed by means of the BLOCK_ERR parameter (page
9-3-3. Alarm detection and processing
The Transducer Block does not generate any process alarms. The status of the process
variables is evaluated in the downstream Analog Input function blocks. If the Analog Input
function block receives no input value that can be evaluated from the Transducer Block then a
process alarm is generated. This process alarm is displayed in the BLOCK_ERR parameter of
the Analog Input func.tion block (BLOCK_ERR = Input Failure).
The BLOCK_ERR parameter of the Transducer Block (
→
) displays the device error that
produced the input value that could not be evaluated and thus triggered the process alarm in
the Analog Input function block.
9-3-4. Accessing the manufacturer-specific parameters
To access the manufacturer-specific parameters, the hardware write protection must be
deactivated (see Section 4.5).
9-3-5. Selecting the units
The system units selected in the Transducer Blocks do not have any effect on the desired units
which should be transmitted by means of the Foundation Fieldbus interface. This setting
is made separately via the corresponding AI Block in the XD_SCALE parameter group. The
unit selected in the Transducer Blocks is only used for the onsite display and for displaying
the measured values within the Transducer Block in the configuration program in question. A
detailed description of the Analog Input (AI) function block can be found in the Foundation
Fieldbus™ Function Blocks manual.
9-3-6. Transducer Block FF parameters
The following table lists all the specified Foundation Fieldbus parameters of the Transducer
Blocks. The device-specific parameters are described as of page 73.