Device Data Base File (Gsd File) - Siemens SITRANS FUS060 Operating Instructions Manual

Hardware Write Protection
If write protection with hardware components is not set, the HW_WRITE_PROTECTION PROFIBUS
parameter will not be of any significance.
Calibration data
Access to calibration data and special service parameters can only be enabled by entering a
factory code. Improper changes to these data can cause the device to seriously malfunction.
Locking local operation
Local operation can be locked using the LOCAL_OP_ENABLE PROFIBUS parameter:
• 0: Local operation is disabled completely and the last valid display status remains. If
communication fails for longer than 30 s, the local lock will be disabled automatically until
communication is restored.
• 1: Local operation is enabled and if necessary limited with the WRITE_LOCKING write
protection or a customer code.
B.8

Device Data Base File (GSD File)

The device data base file (GSD file) is used to configure the format and order of the cyclical data.
The standard GSD for ultrasonic flow transducers described in profile 2.0 and which does not
support manufacturer-specific expansions can be used alternatively to the device-specific GSD
("Si018159.gsd"). The "IDENT_NUMBER_SELECTOR acyclic parameter must be set to select the
GSD.
IDENT_NUMBER_SELECTOR:
• 0 = profile GSD (0x9741.gsd)
• 1 = manufacturer-specific GSD (factory setting) (0x8159.gsd)
All permitted identifiers are listed in the GSD for each measured value (= module, Slots). They can
be combined freely with the limitation that only one identifier can be used per module and the
order of the identifiers must coincide with the order of the modules.
The identifier formats "short" (identifier byte) and "long" (extended identifier) are accepted for
the flow, sound velocity and ultrasonic amplitude. The "long" and "resettable quantity ... long"
are accepted for the totalizer modules. The identifiers are checked independently of each other,
i.e. combinations with different formats are permitted when several measured values are
queried. At least one measured value must be queried, i.e. the number of the identifier must be
at least 1 and may be maximum 7.
The order of the measured values in the cyclical telegram defined in the GSD is set and cannot
be changed.
For the configuration data this means that the first identifier always represents the flow, the
second the sound velocity, ... , the last the quantity reverse. If you want to omit a measured
value, set "Free Place" as the identifier.
SITRANS FUS060 with PROFIBUS PA
Operating Instructions, 09/2021, A5E02225054-AD
PROFIBUS communication
B.8 Device Data Base File (GSD File)
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