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Contents PS69-DPM ♦ CompactLogix or MicroLogix Platform
User Manual PROFIBUS DPV1 Master
Page 68 of 130 ProSoft Technology, Inc.
October 1, 2014
Byte Offset
Member Name
Data Type
Description
84
Seq_Nr
SINT
Sequence Number (0 to 31)
85
Alarm_Type
SINT
Alarm Type (1 to 6, 32 to 126)
86
Alarm_Spec
SINT
Alarm Specification (0 to 7)
87
Reserved
SINT
Reserved
Alarm_Status
Bit Offset
Member Name
Data Type
Description
0
AlarmInd
BOOL
Alarm Indication
1
Reserved
BOOL
Reserved
2
Reserved
BOOL
Reserved
3
Reserved
BOOL
Reserved
4
Reserved
BOOL
Reserved
5
Reserved
BOOL
Reserved
6
Reserved
BOOL
Reserved
7
AlarmOverrun
BOOL
Alarm Overrun
The alarm indication registers start with the byte "Alarm_Status". This byte is a collection of
bits to indicate alarm status. Bit D0 (AlarmInd) is set to "1" to indicate to the user application
that an alarm request has been received by the module. The specifics of the alarm request
will be present in the remaining alarm indication fields, which contain the slave station
address "Rem_Add", the slot number "Slot_Number", and so on. according to the
PROFIBUS specification. If an alarm is indicated, the user application has to decide what to
do with its application specific reaction.
The application has to respond to the alarm with a CIP message, which is described later in
this manual. With its response, the application confirms to the slave that the alarm was
received. When the user application responds to the alarm using a CIP message Bit 0 will
be set to "0" indicating that the alarm has been acknowledged and is no longer pending. The
alarm information Rem_Adr, Slot_Number, and so on. is not cleared. It can happen that a
second or more alarms are pending. In this case bit D0 will not be reset to "0" when the
application has responded to one alarm. Only the alarm information Rem_Add,
Slot_Number and so on. will be update in the case of multiple alarms pending.
To handle this situation the application has to look also to the variable "AlarmCnt". This
counter will be incremented every time a new alarm is pending.
NOTE: It is possible to receive several alarms from one or more slaves. The master module has a buffer for only
32 alarms. The application has to respond as fast as possible to alarms. If the internal alarm buffer runs over,
further alarms are lost. This situation is indicated by the "Alarm_Status" bit D7 "AlarmOverrun". If an alarm was
loss, this bit is set to "1". It will be cleared only if the bus communication is stopped for example if the controller
goes to stop or the application stops the bus communication by the NRDY bit in the command register.
- PS69-DPM 1
- Your Feedback Please 2
- Contents 3
- 1 Start Here 7
- 1.1 General Information 8
- 1.2 Software Requirements 8
- 1.3 Hardware Requirements 9
- 1.4 Reference Systems 9
- 1.6 Package Contents 10
- 1.7 Installing the Module 11
- 1.8.2 Create the Module 15
- ATA-INT 16
- EW ROUTINE 18
- MPORT RUNG… 18
- OMMUNICATIONS menu, and 30
- button to 32
- 2.2 PROSOFT.fdt (SYCON.net) 36
- 2.2.1 General 36
- 2.2.2 Create a New Project 37
- 2.2.5 Project Download 47
- 2.3.1 Module Selection 51
- 2.3.2 Module Properties 1 53
- 2.3.3 Module Properties 2 54
- 2.4 RSLogix 500 55
- 2.4.1 Module Selection 55
- 2.5 Back Up the Project 57
- 3 Communication 59
- 3.1.2 Input Array 61
- 3.1.3 Output Array 69
- 3.2 CIP Messaging 73
- 3.2.3 Standard Messaging 76
- 3.2.4 DPV1 Messaging 82
- 3.2.5 Messaging Error Codes 87
- 4 RSLogix Example Program 91
- 5.1 Diagnostic Interface 95
- 5.2.1 CompactLogix 96
- 5.2.2 MicroLogix 1500 96
- 5.2.3 PS69 LEDs 97
- 5.3.1 Master Diagnostics 98
- 5.3.2 Slave Diagnostics 100
- 5.4 Troubleshooting 100
- 5.4.1 CompactLogix I/O LED 100
- 5.4.5 Cable 103
- 6 Reference 105
- 6.1.2 PROFIBUS Interface 106
- 6.2.1 DPV0 Services 108
- 6.2 PROFIBUS Functionality 108
- 6.2.2 DPV1 Services 109
- 6.3.18 DPV1_ALARM_INDICATION 116
- 6.3.19 MSAC1_READ_REQUEST 117
- 6.3.20 MSAC1_READ_CONFIRM 117
- 6.3.21 MSAC1_WRITE_REQUEST 117
- 6.3.22 MSAC1_WRITE_CONFIRM 118
- 6.3.23 MSAL1M_ALARM_RESPONSE 118
- 6.3.24 MSAL1M_ALARM_CONFIRM 119
- (SYCON.net) Software 125
- 7.4 LIMITATION OF LIABILITY 126
- In This Chapter 127
- 8.2 Warranty Information 128
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