Yokogawa FVX110 - Manual (Page 146)

A6-4
IM 01S01C01-01EN
A6.4 Status Transitions
Note that inputs IN_1 – IN_8 status are not transferred to LCD Transducer Block as is when the following
settings are made.
Setting Status transition (high-level system priority)
When MAO function block is in O/S mode Bad – Out of Service – No Limit
When fault state to value x = 0 (freeze) (x: 1 to 8) Bad – No comm, with LUV – Const
When fault state to value x = 1 (present) (x: 1 to 8) Bad – No comm, no LUV – Const
When no output is connected to IN_1 – IN_8 Bad – Not Connected – No Limit
The MAO function block CHANNEL is 0
Bad – Configuration Error –
(*) received limit: Same as IN_1 – IN_8 status
Something other than the above Same as IN_1 – IN_8 status
A6.5 Parameter list display
Relative
Index
Parameter
Write
Mode
Valid
Range
Initial
Value
View
Description/Remarks
1 2 3 4
0 BLOCK_HEADER Block
Tag
=O/S
Displays Block Tag, DD Revision, Execution Time
and other MAO function block information.
1 ST_REV -------- -------- 2 2 2 2 Describes the revision level of parameters for
setting the MAO function block. The revision
is updated when set values are changed. This
parameter is used to check for parameter changes.
2 TAG_DESC Null A universal parameter intended for storing
comments describing tag data.
3 STRATEGY 0 2 The strategy field is a universal parameter used by
a high-level system to identify function blocks.
4 ALERT_KEY 1-255 0 1 Key information used to identify the location
at which an alert occurred. Generally, this is a
universal parameter used by a high-level system
to identify specific areas in a plant that are under
the control of specific operators to distinguish
necessary alarms only.
5 MODE_BLK 4 4 A universal parameter that represents block
operating condition. It comprises the Actual, Target,
Permit and Normal modes.
6 BLOCK_ERR -------- -------- 2 2 Indicates error status of the MAO function block.
The following bits are used by the MAO function
block.
bit1: Block Configuration Error
bit 4: LO mode
bit 15: O/S mode
7 CHANNEL O/S 1 2 A means for theoretically accessing LCD
Transducer Block. It cannot be used on the FVX110.
8 IN_1 0 5 5 This is an input (input 1) for the MAO function block.
9 IN_2 0 5 5 This is an input (input 2) for the MAO function block.