Contents
ILX69-PBS ♦ CompactLogix or MicroLogix Platform
User Manual
PROFIBUS Slave Communication Module
Page 64 of 102
ProSoft Technology, Inc.
April 27, 2016
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
