ProSoft Technology ILX69-PBS - Manual (Page 56)

Contents ILX69-PBS ♦ CompactLogix or MicroLogix Platform
User Manual PROFIBUS Slave Communication Module
Page 56 of 102 ProSoft Technology, Inc.
March 20, 2015
(*) Note: The status information ‘InputDataLen’ and ‘OutputDataLen’ are
related to the definition of inputs and outputs from point of view of a
PROFIBUS master.
Example: If t
he ‘OutputDataLen’ indicates a value of 4 Bytes, then it is
related to the input area of the ILX69-PBS, because the input area of the
ILX69-PBS are outputs from point of view of a PROFIBUS master. The
same relation applies to the status ‘InputDataLen’ and the output area of
the ILX69-PBS.
DPV1 Status Registers
The controller application program uses the DPV1 status registers as an indication that the
network master has sent an unsolicited DPV1 Read/Write request. The first will contain two
bits which indicate if a read or write needs to be processed. If this register contains a non-
zero value, the slave’s user program must create an appropriate response to this request by
using a CIP MSG command (shown in Messaging section). The table below contains the
mapping of these registers.
Byte
Offset Structure
Member Data
Type Data
Type Description
32 RWInd SINT Read/Write Indication A Read/Write Request has been received
33 RWIndCnt SINT Read/Write Indication Counter Increments on every new DPV1 request
34 MasterAdr SINT Master Address Address of Requesting Master
35 Slot SINT Slot number Requested Slot Number
36 Index SINT Index Requested Index
37 DataLen SINT Date Length Requested Data Length
DPV1 Read/Write Indication Status Bits
Bit
Offset Structure
Member Data
Type Description
0 ReadReq BOOL 1 = Indicates a Read Request
1 WriteReq BOOL 1 = Indicates a Write Request
2 Reserved BOOL Reserved
3 Reserved BOOL Reserved
4 Reserved BOOL Reserved
5 Reserved BOOL Reserved
6 Reserved BOOL Reserved
7 Reserved BOOL Reserved