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Introduction
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• Serial number
• Order number
• Workpiece pallet number
• Process station settings
• Test results
• Quality data
The MDT is supplied with inductive power by the read/write head and does not use
any batteries. The MDT is passive outside of the range of a read/write head.
The latest FRAM memory technology is used in the ID 40/MDT, ensuring large
memory capacity at low volume. The FRAM memory stores the data for a virtually
unlimited amount of time without additional buffer batteries. Unlike other memory
technologies, FRAMs can be re-written up to 10 billion times.
2.2 ID 40/SLK read/write head
Unlike the mobile data tag, the ID 40/SLK read/write head is placed in a single
location on the assembly line. With the ID 40/SLK, data is exchanged with the MDT
without contact. It is directly connected as part of a fieldbus system and allows a
user controller to access the workpiece data. The read/write head comes in Profibus
DP, Interbus-S and CANopen versions.
Fig. 2: ID 40 on TS 2plus transfer system
The SLK sends data from the fieldbus master to the MDT or, when given a read
command, from the MDT to the fieldbus.
Parameters can also be set for data transfers, wherein write and read commands
are saved to the SLK to be automatically executed when the next MDT arrives.
Parameters are typically set for the SLK when the system is initialized, but can be set
at any time as long as an MDT is not in the HF field of the SLK, or the HF field is off.
The SLK generates a high-frequency alternating field (HF field) that is needed to
provide the MDT with inductive power. No-contact data transmission with the MDT
also occurs through this HF field, which is generated using a ferrite antenna under
the dark, plastic cover.
3 842 530 344/2014-05, MIT: ID 40, Bosch Rexroth AG
PROOF COPy 1 | 20.05.2014 | FOR INTERNAL USE ONLy
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- ID 40/Mdt Mobile Data Tag
- Serial Interface
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Troubleshooting
