Allen-Bradley ProcessLogix 1757 Series User Manual

Publication 1757-RM810A-EN-P - May 2002
3-70 Functional Blocks
Exchange Blocks (ControlNet Interoperability)
REQFLAGARRAY (Request Flag Array)
REQNUMARRAY (Request Number Array)
Description Provides storage for up to 512 Boolean output flags The value can be accessed as a simple Boolean (Off or On) using
the PVFL [n] or PVVALSTS [n] parameters. Where “n” is the number of the flag.
Function • Used to define two separate states (Off/On) to indicate status of a particular input.
• Number of flag values (NFLAG) is user configurable.
• Current state of flags can be changed/read using flag value (PVFL [n] or PVVALSTS [n]) (Boolean).
Inputs/Outputs Boolean output flags (PVFL [0..511])
Boolean output flags (PVVALSTS [0..511])
Associated
Block
REQNUMARRAY and REQTEXTARRAY.
Parameters COMMAND
DHCHANNEL
DHDESTLINK
DHFL
DHNODE
DHSRCLINK
DONEFL
ERRCODE
ERRFL
ERRINFO
FILENUM
LASTRESPTM
NFLAG
ORDERINCM
PATH
PVFL [0..511]
PVVALSTS [0..511]
READYFL
SENDFL
Description Provides storage for up to 64 integers or floating point values that are accessible through the corresponding PV
configuration parameter (PV [n]). Where “n” is the number of the numeric.
Function • Use outputs (PV [0..63]) as source parameters to provide predefined analog constants to other function blocks. A
bad numeric output parameter typically has the value NaN (Not-a-Number).
• Number of Numeric Values (NNUMERIC) is user configurable.
Inputs/Outputs Up to 64 outputs (PV [0..63]), depending on the number of numeric values (NNUMERIC) configured
Associated
Block
.REQFLAGARRAY and REQTEXTARRAY.
Parameters COMMAND
DHCHANNEL
DHDESTLINK
DHFL
DHNODE
DHSRCLINK
DONEFL
ERRCODE
ERRFL
ERRINFO
FILENUM
LASTRESPTM
NNUMERIC
ORDERINCM
PATH
PV [0..63]
PVSTS [0..63]
PVVALSTS [0..63]
READYFL
SENDFL
TGTDATATYPE

Allen-Bradley ProcessLogix 1757 Series Specifications

General

Brand	Allen-Bradley
Model	ProcessLogix 1757 Series
Category	Control Unit
Language	English