Bürkert 8643 PA, Operating Instruction

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Configuringthenetwork
8.2.1.2. Description of the standard parameters
These parameters are included in the physical block, in the function block and in the transducer block.
Parameter Description
ALARM_SUM This parameter includes the current status of the block alarm. The parameter
ALARM_SUM is not yet supported.
ALERT_KEY This parameter includes the identification number of the plant unit. As a result, the
location (plant unit) of an event can be detected.
MODE_BLK This parameter includes the current mode and the permitted and normal mode of the
block.
ST_REV A module has static parameters which are not changed by the process. Values are
assigned to these parameters during the configuration or optimisation. The values
of the parameters ST_REV must increase by 1 whenever a static block parameter is
changed. As a result, the parameter revision can be checked.
STRATEGY Arrangement of the function module. The STRATEGY field can be used to group
blocks.
TAG_DESC Each block can be assigned a written TAG description. TAG_DESC is the address
of the block. TAG_DESC must be unique and standard in the field bus system.
TARGET_MODE The TARGET_MODUS includes the required mode which is usually specified by a
control application or by operating personnel.
8.2.1.3. Properties of the standard parameters
Rel. Index Variable Data type Storage Size Access
1 ST-REV Unsigned 16 N 2 r,w
2 TAG_DESC Octet String * S 32 r,w
3 STRATEGY Unsigned 16 S 2 r,w
4
ALERT_KEY Unsigned 8 S 1 r,w
5
TARGET_MODE Unsigned 8 S 1 r,w
6
MODUS_BLK
current
permitted
normal
DS-37
N**
Cst
Cst
3 r
7 ALARM_SUM DS-42 8 r
Table 2: Assignments of the standard parameters
* The preferred data type should be Visible String
** N-accepted mode = RCAS
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Type 8643 PA