Allen-Bradley 1757-FFLD2, Руководство пользователя

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116 Rockwell Automation Publication 1757-UM012A-EN-P - July 2011
Chapter 7 Linking Device Function Blocks
Parameters
Table 8 describes parameters for the Logix Block.
See page 155 for data type and structure definitions
.
Table 8 - LGX Block Parameters
Index Parameter Data Type
(length) Valid Range/
Options Default
Value Units Edit
Mode Description
1 ST_REV Unsigned16 0 None RO The revision level of the static data associated with the
function block. The revision value is incremented each
time a static parameter value in the block is changed.
2 TAG_DESC OctString(32) Spaces N/A AUTO The user description of the intended application of the
block.
3 STRATEGY Unsigned16 0 None AUTO Can be used to identify grouping of blocks. This data is
not checked or processed by the block.
4 ALERT_KEY Unsigned8 1 to 255 0 None AUTO The identification number of the plant unit.
5 MODE_BLK DS-69 OOS N/A AUTO See MODE Block Parameter in Chater 2 of the
FOUNDATION Fieldbus Design Considerations
Reference Manual, publication
RSFBUS-RM001 .
6 BLOCK_ERR Bitstring(2) E RO Reflects the error status associated with the hardware
or software components associated with a block.
Because it is a bitstring, multiple errors can be shown.
7 SLOT 0 to 15 0 OOS Identifies the virtual slot location of the Logix Block in
this linking device.
8–15 IN_0– IN_7 DS-66 AWL Analog inputs.
16–23 IN_D0–IN_D7 DS-65 AWL Digital inputs.
24–31 OUT_0–OUT_7 DS-65 AWL Analog outputs.
32–39 OUT_D0–OUT_D7 DS-65 AWL Digital outputs.
40 UPDATE_EVT DS-73 N/A RO This alert is generated by any change to the static data.
41 BLOCK_ALM DS-72 N/A RO The block alarm is used for all configuration, hardware,
connection failure or system anomalies in the block.
The cause of the alert is entered in the subcode field.
The first alert to become active will set the Active
status in the Status attribute. As soon as the
Unreported status is cleared by the alert reporting task,
another block alert may be reported without clearing
the Active status, if the subcode has changed.