Approvals And Certifications - Danfoss VLT PROFIBUS DP MCA 101 Programming Manual

Introduction
1 1
PROFIBUS DP-V1
The PROFIBUS DP protocol enables communication
between PROFIBUS masters and followers.
Communication can be configured via MCT 10 Set-up
Software.
Cyclical/Acyclical Communication
•
PLC communicates with telegrams of constant
length.
•
Fits time-critical requirements.
•
Cyclical transmission via PPO types.
•
Extended diagnosis.
Illustration 1.1 PROFIBUS DP-V0
Features of a Master class 1 connection:
•
Cyclical data exchange (DP-V0).
•
Acyclical read/write on parameters.
•
Extended diagnosis.
The acyclical connection is fixed, and cannot be changed
during operation.
Features of a Master class 2 connection:
•
Initiate/Abort acyclical connection.
•
Acyclical read/write on parameters.
The acyclical connection can be established (Initiate) or
removed (Abort) dynamically even when a master class 1 is
active on the network. The DP-V1 acyclical connection can
be used for general parameter access as an alternative to
the PCV parameter channel.
4
Programming Guide
PLC
Danfoss A/S © Rev. 05/2014 All rights reserved.
PLC
Master class 1
Illustration 1.2 PROFIBUS DP-V1
The PROFIBUS DP extension DP-V1 permits acyclical as well
as cyclical data communication. This feature can be used
by a DP master class 1 (for example, PLC), as well as a DP
master class 2 (for example, PC tool).

1.5 Approvals and Certifications

More approvals and certifications are available. For more
information, contact a local Danfoss partner.
PC tool
Master class 2
MG37G102