OPC90 Server
7.1 Analog Input Loop (AIL)
The AIL OPC90 block is used to retrieve the exception reported output from
Bailey Analog Output / Loop (function code 30), Analog Point Definition (function
code 70) and Enhanced Analog Point Definition (function code 158) blocks.
Restrictions: This OPC block can be utilized with all Bailey interface types except
serial port module (SPM & CPM02).
TAGNAME TYPE ACCESS DESCRIPTION
ADDR_RING VT_I2 Config/Read Bailey ring address.
ADDR_NODE VT_I2 Config/Read Bailey node address.
ADDR_MODULE VT_I2 Config/Read Bailey module address.
ADDR_BLOCK VT_I2 Config/Read Bailey block address.
MESSAGE VT_BSTR Read Provides the block operational message.
TAG VT_BSTR Read Provides the block name.
TAGLONG VT_BSTR Read Provides the block long OPC path name.
TAGDESC VT_BSTR Read Provides the block descriptor.
QUALITY VT_BOOL Read Current quality of Bailey values (0-good, 1-
bad).
OUT VT_R4 Read Current output value from Bailey.
SPAN VT_R4 Read Span in Engineering Units.
ZERO VT_R4 Read Zero in Engineering Units.
EU VT_I2 Read Engineering Units Code.
EU_TEXT VT_BSTR Read Engineering Units String.
HI_LIM VT_R4 Read/Write The setting for the alarm limit used to detect
the high alarm condition. Writing a new value
to this attribute automatically tunes the alarm
limit of the associated Bailey block.
LO_LIM VT_R4 Read/Write The setting for the alarm limit used to detect
the low alarm condition. Writing a new value
to this attribute automatically tunes the alarm
limit of the associated Bailey block.
HI_ACT VT_BOOL Read High alarm active indicator.
LO_ACT VT_BOOL Read Low alarm active indicator.
The RoviSys Company Version 7.0 Page 40
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