Flowserve 400MD Logix - Manual (Page 48)

The functionality of these parameters follows the standard Fieldbus definitions as defined in the Foundation Fieldbus specifications.
8.10 Digital Input Function Block
DI Block Description
The DI block takes the manufacturer’s input data, selected by channel number, and makes it available to other function blocks at its output.
This block operates according to the Foundation Fieldbus specifications. Also found in Section 10.19
Table 8.11 DI Function Block Parameter List
Index Origin Name Store Date Type Default Value
0 STND DISCRETE_INPUT_BLOCK SRW Record BLOCK 0
1 STND ST_REV SR Simple UNSIGNED16 0
2 STND TAG_DESC SRW Simple OCTET_STRING “ “
3 STND STRATEGY SRW Simple UNSIGNED16 0
4 STND ALERT_KEY SRW Simple UNSIGNED8 0
5 STND MODE_BLK SRW Record MODE 0x01;0x01;0x19;0x10
6 STND BLOCK_ERR R Simple BIT_STRING 0
7 STND PV_D R Record DISC_S 0;0
8 STND OUT_D NRWO Record DISC_S 0;0
9 STND SIMULATE_D RW Record SIM_DISC 0;0;0;0;1
10 STND XD_STATE SRW Simple UNSIGNED16 0
11 STND OUT_STATE SRW Simple UNSIGNED16 0
12 STND GRANT_DENY RW Record ACCESS_PERM 0;0
13 STND IO_OPTS|IO_OPTS_DI SRW Simple BIT_STRING 0
14 STND STATUS_OPTS|STATUS_OPTS_DI SRW Simple BIT_STRING 0
15 STND CHANNEL SRW Simple UNSIGNED16 0
16 STND PV_FTIME SRW Simple FLOATING_POINT 0
17 STND FIELD_VAL_D R Record DISC_S 0;0
18 STND UPDATE_EVT RW Record ALARM_EVENT 0;0;0,0;0;0;9;0
19 STND BLOCK_ALM RW Record ALARM_DISC 0;0;0,0;0;0;0;8;0;0
20 STND ALARM_SUM|ALARM_SUM_DI SRW Record ALARM_SUMMARY 0;0;0;0
21 STND ACK_OPTION|ACK_OPTION_DI SRW Simple BIT_STRING 0
22 STND DISC_PRI SRW Simple UNSIGNED8 0
23 STND DISC_LIM SRW Simple UNSIGNED8 0
24 STND DISC_ALM RW Record ALARM_DISC 0;0;0,0;0;0;0;7;0;0
Block
The functionality of these parameters follows the standard Fieldbus definitions as defined in the Foundation Fieldbus specifications.
8.11 Input Selector Function Block
IS Block Description
The signal selector block provides selection of up to four inputs and generates an output based on the configured action. This block normally
receives its inputs from AI blocks. The block performs maximum, minimum, middle, average and ‘first good’ signal selection. With a combi-
nation of parameter configuration options the block can function as a rotary position switch, or a validated priority selection based on the use
of the first good parameter and the disable_n parameter. As a switch the block can receive switching information from either the connected
inputs or from an operator input. The block also supports the concept of a middle selection. Although the normal configuration for this feature
would be with three signals the block should generate an average of the middle two if four signals are configured or the average of two if three
are configured and a bad status is passed to one of the inputs. Logic is provided for handling uncertain and bad signals in conjunction with
configured actions. The intended application of this block is to provide control signal selection in the forward path only, therefore, no back
calculation support is provided. SELECTED is a second output that indicates which input has been selected by the algorithm.
Logix 3400MD Digital Positioner LGENIM3405-02 11/13
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