Yokogawa DO202 2-Wire Dissolved Oxygen Analyzer - Manual (Page 33)

IM 12A00A01-61E
3-28 Foundation Fieldbus
3-6� List of parameters for each block of the EXA
Note: The Write Mode column contains the modes in which each parameter is write enabled.
O/S: Write enabled in O/S mode.
MAN: Write enabled in Man mode and O/S mode.
AUTO: Write enabled in Auto mode, Man mode, and O/S mode.
3-6�-1 Resource Block
Relative
Index Index
Parameter
Name Factory Default
Write
Mode Explanation
0 1000 Block Header TAG:“RS” Block Tag
= O/S Information on this block such as Block Tag, DD Revision,
Execution Time etc.
1 1001 ST_REV – – The revision level of the static data associated with the resource
block. The revision value is incremented each time a static
parameter alue in this block is changed.
2 1002 TAG_DESC Null AUTO The user description of the intended application of the block.
3 1003 STRATEGY 1 AUTO The strategy field can be used to identify grouping of blocks.
This data is not checked or processed by the block.
4 1004 ALERT_KEY 1 AUTO The identification number of the plant unit. This information may
be used in the host for sorting alarms, etc.
5 1005 MODE_BLK AUTO AUTO The actual, target, permitted, and normal modes of the block.
6 1006 BLOCK_ERR – – This parameter reflects the error status associated with the
hardware or software components associated with a block. It is a
bit string, so that multiple errors may be shown.
7 1007 RS_STATE – – State of the resource block state machine.
8 1008 TEST_RW – AUTO Read/write test parameter-used only for conformance testing and
simulation.
9 1009 DD_
RESOURCE
Null – String identifying the tag of the resource which contains the
Device Description for this resource.
10 1010 MANUFAC_ID 0x00594543 – Manufacturer identification number-used by an interface device
to locate the DD file for the resource.
11 1011 DEV_TYPE PH202: 0x0830
SC202: 0x0831
ISC202: 0x0832
DO202: 0x0833 – Manufacturer’s model number associated with the resource-used
by interface devices to locate the DD file for the resource.
12 1012 DEV_REV 3 – Manufacturer revision number associated with the resource-used
by an interface device to locate the DD file for the resource.
13 1013 DD_REV 1 – Revision of the DD associated with the resource-used by an
interface device to locate the DD file for the resource.
14 1014 GRANT_DENY 0 AUTO Options for controlling access of host computer and local control
panels to operating, tuning and alarm parameters of the block.
15 1015 HARD_TYPES Scalar input – The types of hardware available as channel numbers.
bit0: Scalar input
bit1: Scalar output
bit1: Scalar output
bit2: Discrete input bit2: Discrete input
bit3: Discrete output bit3: Discrete output
16 1016 RESTART – – Allows a manual restart to be initiated. Several degrees of restart
are possible. They are 1: Run, 2: Restart resource, 3: Restart
with initial value specified in FF functional spec. (*1), and 4:
Restart processor.
*1: FF-891 Foundation TM Specification Function Block
*1: FF-891 Foundation TM Specification Function Block
Application Process Part 2.
17 1017 FEATURES Soft write lock
supported
Report supported – Used to show supported resource block options.
18 1018 FEATURE_SEL Soft write lock
supported
Report supported AUTO Used to select resource block options defined in FEATURES.
bit0: Scheduled
bit1: Event driven
bit2: Manufacturer specified
19 1019 CYCLE_TYPE Scheduled – Identifies the block execution methods available for this resource.
20 1020 CYCLE_SEL Scheduled AUTO Used to select the block execution method for this resource.
21 1021 MIN_CYCLE_T 3200 (100ms) – Time duration of the shortest cycle interval of which the resource
is capable.
22 1022 MEMORY_SIZE 0 – Available configuration memory in the empty resource. To be
checked before attempting a download.
23 1023 NV_CYCLE_T 0 – Interval between writing copies of NV parameters to non-volatile
memory. Zero means never.
24 1024 FREE_SPACE 0 – Percent of memory available for further configuration. EXA has
zero which means a preconfigured resource.