Fisher FIELDVUE DVC6200p Instruction Manual page 145

Instruction Manual
D103563X012
Table C‐14. Logbook Function Block Parameter Definitions
Label
PARAMETER_NAME
ACTUAL_POST_READ_NUMBER
POST_READ_ENTRY
Type
Value
Active
Time
Reserved by PI
Index RO / Block
Number RW Mode
16 RW ALL
Default Value: Should
point to a non-existent
DS-62 entry with the
following values:
Status_Class = 0
17 RO
Logbook_Entry = TRUE
Output_Reference = 0
Supervision = 0
Text = "Empty Logbook"
Status_Class definition:
1: Failure
17.1
2: Maintenance Required
3: Function Check
4: Limits
5: Advisory
17.2
17.3
17.4
18-27
Range Initial Value
0
255
0
FALSE
0
Blocks —Logbook Function Block
Description
Data Type: Unsigned16
Shows the number of the Logbook entry
which will be returned by the next read access
to the parameter POST_READ_ENTRY. This
parameter provides a flow control of the entry
access of the Logbook. It decreases after each
POST_READ_ENTRY parameter read access. If
the oldest entry was read then this parameter
switches to the number of the newest one. If
the value 0 (zero) is written to
ACTUAL_POST_READ_NUMBER then the
parameter POST_READ_ENTRY is set to the
newest entry. This parameter is never write
protected by any write locking mechanism.
Data Type: DS-64
A read access to this parameter returns the
logbook entry with the number given by
ACTUAL_POST_READ_NUMBER. Every read
access automatically decreases ACTUAL_
POST_READ_NUMBER by one, i.e. the read
pointer is shifted to the next older entry. As
long as no entries have been stored in the
Logbook, it shall point to a default value (see
default value for this parameter).
Data Type: Unsigned8
Contains the type of entry:
1-16 = Status information for status class n
255 = Binary Message
Data Type: Unsigned16
Depends on the value of Type:
Type = 1-16 --> Value = OR sum of the class
states of the specific class
Type = 255 --> Value = Number of Binary
Message
Data Type: Boolean
True = Binary Message becomes Active
False = Binary Message becomes Inactive
Data Type: BinaryDate The time the entry
was logged into the logbook.
June 2017
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