Yokogawa Multi Channel Oxygen Analyzer System ZR22/AV550G - Manual (Page 27)

<5. CONFIGURATION>
5-8
IM 11M12D01-61E
5.6 Block Setting
Set the parameter for function block VFD.
5.6.1 Link Objects
A link object combines the data voluntarily sent by the function block with the VCR. Each AV550G has
40 link objects. A single link object specifies one combination. Each link object has the parameters
listed in Table 5.6. Parameters must be changed together for each VCR because the modifications
made to each parameter may cause inconsistent operation.
Table 5.6 Link Object Parameters
Link objects are not factory-set. Set link objects as shown in Table 5.7.
Table 5.7 Settings of Link Objects (example)
5.6.2 Trend Objects
It is possible to make settings so that a function block automatically transmits trends.
For this, each AV550G has ten trend objects: eight for trends of analog parameters and two for
discrete parameters. For each trend object, specify a single parameter, the trend of which is to be
transmitted.
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.
T0506.ai
Sub-
index
Parameters Description
1 LocalIndex Sets the index of function block parameters to be combined;
set “0” for Trend and Alert.
2 VcrNumber Sets the index of VCR to be combined. If set to “0”, this link
object is not used.
3 RemoteIndex Not used in the AV550G. Set to “0”.
5 StaleCountLimit
4 ServiceOperation Set one of the following. Set only one each for link object
for Alert or Trend.
0: Undefined
2: Publisher
3: Subscriber
6: Alert
7: Trend
Set the maximum number of consecutive stale input values
which may be received before the input status is set to BAD.
To avoid the unnecessary mode transition caused when the
data is not correctly received by subscriber, set this
parameter to “2” or more.
T0507.ai
Index Link Object # Settings(example)
30000 AI. OUT VCR#6 1
30001 2
30002 3
30003 to 30039 Not used 4 to 40
Trend VCR#5
Alert VCR#7