Proline Promass 83 PROFIBUS DP/PA Commissioning
Endress+Hauser 107
CONTROL_BLOCK module - cyclic control of device functions
By means of the CONTROL_BLOCK module, the measuring device is able to process device-specific
control variables in cyclic data exchange (e.g. switching on positive zero return).
Data structure of the CONTROL_BLOCK module:
The table describes the possible control variables which are supported by the CONTROL_BLOCK
module:
!
Note!
The control (e.g. switching on positive zero return) is executed by cyclic data exchange if the output
byte switches from “0” to the bit pattern in question. The output byte must always switch from “0”.
A switchback to “0” does not have any effect.
Example (change the output byte)
EMPTY_MODULE module
Promass 83 is a modular PROFIBUS slave. In contrast to a compact slave, the structure of a modular
slave is variable - it consists of several individual modules. In the GSD file, the individual modules
are described with their individual properties. The modules are permanently assigned to the slots,
i.e. the sequence or arrangement of the modules must be observed when configuring the modules.
Gaps between configured modules have to be assigned the “EMPTY_MODULE” module.
For a more detailed description, see → Page 109
Byte 1
Control
Module Control variables for totalizer 1...3
CONTROL_BLOCK
0 → 2: Positive zero return ON
0 → 3: Positive zero return OFF
0 → 4: Zero point adjustment
0 → 8: Unidirectional (measuring mode)
0 → 9: Bidirectional (measuring mode)
0 → 24: Run SET UNIT TO BUS function
From → To Result
0 → 2 positive zero return is switched on.
2 → 0 this does not have any effect.
0 → 3 positive zero return is switched off.
3 → 2 this does not have any effect.
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