Host Application Objects 195 (258)
Command Details: Expected_Ident_Ind
Category
Extended
Details
Command Code 1Bh
Valid for: Object Instance
Description
The module issues this command to inform the host application of the Expected Identification (Module/Sub-
module List) that the IO Controller will use for the established AR.
Note that this information may be split in multiple segments, which means that this command will be issued
multiple times by the module, each time containing different parts of the configuration.
Expected_Ident_Ind is similar to AR_Info_Ind but uses a different segmentation protocol that shall be used
for the 40 series concept, see Anybus CompactCom 40 Software Design Guide (Message Segmentation).
For very large configurations where the Expected Identification cannot fit into one message, this segmenta-
tion protocol will be used. If the number of modules/sub-modules exceeds the capabilities of the Anybus
CompactCom the message will be truncated. The size of the configuration can be up to 2370 bytes at maxi-
mum number of modules/sub-modules.
It is optional to implement support for this command.
• Command Details
Field Contents Comments
CmdExt[0] Reserved For segmented messages the CmdExt[1] byte has been
reserved for segment bits,see Anybus CompactCom 40
Software Design Guide (Message Segmentation)..
CmdExt[1] Cmd segment bits
MsgData[0] AR handle (low byte) Handle for the Application Relationship.
MsgData[1] AR handle (high byte)
MsgData[2..
n]
Data field The first two bytes in the initial block of the Data field in-
dicates the number of modules in the configuration.
Each module is represented by a Module block, followed
by a number of Submodule blocks (provided that the
module in question contains submodules). See “Data
Format” below for coding of the data field.
Anybus
®
CompactCom
™
40 PROFINET IRT Network Guide SCM-1202-023 EN 1.8
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