Temperature Multi-Input Device
TM-I Configuration
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4
TM-I Configuration
The following chapter explains the function block specifications, and how to parameterize the
temperature multi-input device for your application.
4.1
Introduction
Like all FOUNDATION Fieldbus devices, the temperature multi-input device uses the following
function blocks:
■
1 resource block
■
9 transducer blocks, consisting of 8 sensor blocks and 1 concentrator block
■
9 standard FOUNDATION fieldbus function blocks, consisting of 8 AI blocks and 1 MAI
block
Sensor Transducer Blocks
The sensor transducer blocks connect to the sensor hardware and can be used to configure up
to eight temperature sensors connected to the device.
Concentrator Transducer Block
For optimum productivity and configuration time, the concentrator transducer block provides
the following options and information:
■
Easily accessible sensor configuration options
■
Device description (DD) methods for easy configuration of the TM-I device
■
Information on body temperature of the TM-I device
■
Information on EMC filter settings
■
Simultaneous output of values and diagnostics information of all channels
Analog Input (AI) Blocks
The analog input (AI) blocks conform to the FOUNDATION Fieldbus specification and can be
used to build a FOUNDATION fieldbus application. Depending on the configuration, AI blocks
provide temperature, voltage, and resistance values.
Multiple Analog Input (MAI) Block
The multiple analog input (MAI) block conforms to the FOUNDATION Fieldbus specification
and provides all eight sensor values in one block. Limits handling and alarms are not
implemented in the MAI block. Also, the MAI block consumes only one execution time, so the
FOUNDATION Fieldbus schedule time can be reduced.
The MAI block is useful, e. g., if the device is used for monitoring purposes, because it is easy
to implement and does not require configuration. Additionally, only 1 block needs to be
configured instead of 8.
4.2
Function Block Interaction and Channel Mapping
Transducer blocks transmit a measurement value to AI and MAI blocks. The connection
between the blocks is established via the "Channel" parameter of the AI block. The AI block
chooses the sensor block to get the process data from.