Yokogawa RotaMASS 3-Series - Manual (Page 30)

5. CONFIGUrATION
5-6 IM 01R04B05-00E-E 3rd edition July 30, 2010 -00 all Rights Reserved. Copyright © 2005, Rota Yokogawa
5.6.2 Trend Objects
It is possible to make settings so that a function
block automatically transmits the trend. For this,
each RotaMaSS has ten trend objects: eight for
trends of analog parameters and two for discrete
parameters. For each trend object, specify a sin-
gle parameter, the trend of which is to be trans-
mitted. Each
trend object has the parameters listed in table
5.8. For the first four parameters, setting is
mandatory. Before writing parameter settings to
a trend object, parameter WRItE_LoCK of the
resource block must be modified to unlock the
write-lock.
Table 5.8 Parameters for Trend Objects
T0508.EPS
S ub -
index P arameters D escription
1 Block Index Sets the leading index of
the function block that
takes a trend.
2 Parameter Relative
Index Sets the index of parameters
taking a trend by a value
relative to the beginning of the
function block. In the
Rotamass, the following three
types of trends are possible.
7: PV
8: OUT
19: FIELD_VAL
3 Sample Type Specifies how trends are
taken. Choose one of the
following 2 types:
1: Sampled upon
execution of a function
block.
2: The average value is
sampled.
4 Sample Interval Specifies sampling
intervals in units of 1/32
ms. Set the integer
multiple of the function
block execution cycle.
5 Last Update The last sampling time.
6 to 21 List of Status Status part of a sampled
parameter.
21 to 37 List of Samples Data part of a sampled
parameter.
ten trend objects are not factory-set.
Table 5.9 Trend Objects
T0509.EPS
Index Parameter Factory Setting
32000 to
32007
32008
32009
TREND_DIS. 1
TREND_DIS. 2
TREND_FLT.1 to
TREND_FLT.8
Not set.
Not set (these parameters
are used with a DI block or
optional PID block).
F0505.EPS
AI2 OUT
AI1 OUT
FBOD
Alert
Trend
VCR
DLSAP
DLCEP
Fieldbus Cable
ROTAMASS
0xF8 0xF3 0xF4 0xF7 0xF9 0x20 0x07
#1 #2 #3 #4 #8 #6 #7 #5
#1 #3 #2
DI2
OUT DI1
OUT
System
Management
Information
Base (SMIB)
Network
Management
Information
Base (NMIB)
Resource
block
Transducer
block
Link object
Host 1 Host 2 Device
Figure 5.5 Examle of default Configuration
5.6.3 View Objects
View objects are used to group parameters. this
reduces the load of data transactions. Each
RotaMaSS supports four view objects for each
of the resource block, transducer block, six aI
blocks, two It blocks, and PID block (optional).
Each view object contains a group of the param-
eters listed in tables 5.11 to 5.14.
Table 5.10 Purpose of Each View Object
VIEW_1
VIEW_2
VIEW_3
VIEW_4
Set of all the dynamic parameters.
Description
Set of dynamic parameters required by operator
for plant operation. (PV, SV, out, Mode etc.)
Set of static parameters which need to be
shown to plant operator at once. (Range etc.)
Set of static parameters for configuration or
maintenance.
t0510.EPS