ProSoft Technology ILX69-PBS - Manual (Page 64)

Contents ILX69-PBS ♦ CompactLogix or MicroLogix Platform
User Manual PROFIBUS Slave Communication Module
Page 64 of 102 ProSoft Technology, Inc.
March 20, 2015
6.3.3 DPV1 Messaging
This section describes DPV1 messaging functions supported by the ILX69-PBS.
Note: Every DPV1 read or write request must be acknowledged by the
PLC application program. Otherwise, the PROFIBUS master shuts down
communication for both channels, V0 (cyclic IO data) and V1 (non-cyclic
messages). This can cause unexpected lost of data between the master
and the ILX69-PBS.
DPV1 Read
The DPV1 Class 1 Read Response message is used by the slave to reply to a Master DPV1
Read Request. The MSG instruction Response/Return format is as follows.
ILX69PBS.CONTROL.DPV1.Read.Response
Parameter Data Type Value Description
.Status DINT 0x0000 Status of Response message
.Command DINT 0x0485 Command code
.SlotNumber SINT 0 to 255 Slot number of data to be read
.Index SINT 0 to 255 Index number of data to be read
.Length SINT 0 to 240 Data length, 1 to 240 bytes
.Reserved1 SINT 0 Reserved
.ErrorDecode SINT Error code
.ErrorCode1 SINT Detailed error code
.ErrorCode2 SINT User-specific error code
.Reserved2 SINT 0 Reserved
.Data SINT[240] Read Response Data
ILX69PBS.CONTROL.DPV1.Read.Return
Offset Data Type Value Description
.Status DINT 0x0000 Status of Return message
.Command DINT 0x0485 Command code
.SlotNumber SINT 0 to 255 Slot number of data to be read
.Index SINT 0 to 255 Index number of data to be read
.Length SINT[240] 0 to 240 Data length
.Reserved1 SINT 0 Reserved byte