32
4 FUNCTIONS
4.3 PROFIBUS-DPV1
Alarm acquisition function
The alarm acquisition function acquires the DP-Master on alarms or the status information occurring to DP-Slaves.
A maximum of eight pieces of information can be acquired for a DP-Slave.
Requests available on the FX5-DP-M
Alarms can be acquired by the following two methods.
• An Alarm read request (without ACK) or Alarm ACK request can be used
• Using Alarm read request (with ACK)
■
An Alarm read request (without ACK) or Alarm ACK request can be used
Use an Alarm read request (without ACK) when an interval is required until ACK is returned after an alarm is acquired from a
DP-Slave.
Alarm ACK request enables returning of ACK for each acquired alarm.
1.
An alarm occurs.
2.
Acquire the alarm from the DP-Slave. (Alarm read request (without ACK))
3.
Take action against the cause of the problem occurring to the DP-Slave.
4.
Return ACK for the alarm that has been resolved. (Alarm ACK request)
■
Using Alarm read request (with ACK)
Use Alarm read request (with ACK) to automatically return ACK to all acquired alarms after acquiring the alarms from the DP-
Slave.
1.
An alarm occurs.
2.
Acquire the alarm from the DP-Slave and return ACK to all alarms. (Alarm read request (with ACK))
3.
Take action against the cause of the problem occurring to the DP-Slave.
An alarm occurs
Alarm or status information is acquired
FX5-DP-M
Summary of Contents for FX5-DP-M
Page 1: ...MELSEC iQ F FX5 User s Manual PROFIBUS ...
Page 2: ......
Page 9: ...7 MEMO ...
Page 12: ...10 INDEX 168 REVISIONS 170 WARRANTY 171 TRADEMARKS 172 ...
Page 13: ...11 CONTENTS ...
Page 19: ...1 DESCRIPTION 17 1 MEMO ...
Page 100: ...98 9 PROGRAMMING 9 2 DP Master settings DP Slave FDL address 2 ...
Page 101: ...9 PROGRAMMING 9 2 DP Master settings 99 9 DP Slave FDL address 3 ...
Page 108: ...106 9 PROGRAMMING 9 8 Program Example of the Global Control Function ...
Page 109: ...9 PROGRAMMING 9 8 Program Example of the Global Control Function 107 9 ...
Page 110: ...108 9 PROGRAMMING 9 8 Program Example of the Global Control Function ...
Page 112: ...110 9 PROGRAMMING 9 9 Program Example of Acyclic Communication Acyclic Communication ...
Page 114: ...112 9 PROGRAMMING 9 10 Program Example of the Alarm Acquisition Function ...
Page 169: ...APPX Appendix 4 Processing Time 167 A MEMO ...
Page 175: ......