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Reference PS69-DPS ♦ CompactLogix or MicroLogix Platform
User Manual Profibus DP Slave Communication Module
Page 80 of 108 ProSoft Technology, Inc.
May 9, 2014
DPV1 Status Registers
The controller application program will use 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 following table 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
MaAdr
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
RWInd := 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
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 PS69-DPS slave.
Extended Status Information
Via the extended status area the Slave module is in the position to transfer 96
Byte extended status information to the controller application. The information
transferred depends on the parameter "ExtStaSelect" in the "Device Command
Register". This can be controlled by the application program. If the controller
application selects a specific extended status, it will be acknowledged by the
Slave module in the status region in "ExtStaSelect". If the slave adapter does not
acknowledge this selection, the extended information is invalid. The number of
bytes within the extended status area which are valid depends on the selected
status. The number of valid bytes will be shown in the status area in "ExtStaLen".
- PS69-DPS 1
- Your Feedback Please 2
- How to Contact Us 2
- ProSoft Technology 2
- Product Documentation 2
- Contents 3
- 1 Start Here 9
- 1.1 Software Requirements 10
- 1.2 Hardware Requirements 10
- 1.3 Reference Systems 10
- 1.5 Package Contents 12
- 1.8.2 Create the Module 18
- ESSAGE CONFIGURATION TAG 23
- EW MODULE 25
- MPORT RUNG… 27
- OMMUNICATIONS 32
- 2.1 RSLogix 5000 38
- 2.1.1 Module Selection 38
- 2.1.2 Module Properties 1 40
- 2.1.3 Module Properties 2 41
- 2.2 RSLogix 500 42
- 2.2.1 Module Selection 42
- 2.3 Slave Configuration 45
- 2.3.1 General 45
- 2.3.2 GSD File 45
- 3 RSLogix Example Program 49
- 4.1.1 CompactLogix 56
- 4.1.2 MicroLogix 1500 56
- 4.1.3 PS69 LEDs 57
- 4.2 Troubleshooting 58
- 4.2.1 CompactLogix I/O LED 58
- 4.2.2 MicroLogix Fault LED 58
- 4.2.5 Cable 60
- 5 Reference 61
- 5.1 Specifications 62
- 5.1.4 PROFIBUS Interface 65
- 5.2.7 APP_CONSTANT_PATTERN 68
- 5.2.8 APP_DPV1_PROG_CONTROL 68
- 5.2.9 APP_DPV1_STAT_COUNTER 68
- 5.3 PROFIBUS Functionality 73
- 5.3.1 DPV0 Services 73
- 5.3.2 DPV1 Services 74
- 5.4 Communication 75
- 5.4.2 CIP Messaging 84
- In This Chapter 103
- Contacting Technical Support 103
- 6.1 Warranty Information 105
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