User Reference Guide
SST-PB3-REM
184
Explicit Messaging
©2014 Molex Inc.
Document Edition: 1.1.4.0, Document #: 715-0106, Template Edition: 1.1, Template #: QMS-06-045
Use, duplication or disclosure of this document or any of the information contained herein is subject to the restrictions on page ii of this document.
9.1 General Overview of Explicit Messaging
The SST-PB3-REM Master contains three objects that can be accessed via explicit messaging.
The first is the DP-V1 object which has a Class number of 0x64. The second object is the
Command object which has a class number of 0x65. The third object is the EtherNet/IP
Assembly object. These explicit messages can be sent to the SST-PB3-REM Master from a
Rockwell Logix™ PLC such as CompactLogix or an EtherNet/IP Scanner.
9.1.1 Sending Explicit Messages to the DP-V1 Object
DP-V1 Object (Class Number 0x64, Instance 1, Attribute 0) – Allows the SST-PB3-REM to act
on a Profibus network as a DP-V1 Class 1 & Class 2 master. The following explicit messages
can be used to access this object.
Service Name
Service
Code
Description
DP-V1 Class 1 Read
0x52
Reads data from DP-V1 Class 1 slave using slot and
index parameters.
See section 9.2.1, DP-V1 Class 1 Read Command.
DP-V1 Class 1 Write
0x53
Writes data to a DP-V1 slave using Slot Number and
Index parameters
See section 9.2.2, DP-V1 Class 1 Write Command.
DP-V1 Class 2 Initiate
0x54
Initiates a DP-V1 Class 2 connection to a slave. This
must be done before DP-V1 Class 2 Reads and Writes
are sent to Slave.
See section 9.2.3, DP-V1 Initiate Command.
DP-V1 Class 2 Abort
0x55
Aborts a Class 2 connection. Note: Class 2 Abort is
automatically sent when PLC goes to PROG or OFF
state.
See section 9.2.4, DP-V1 Class 2 Abort Command.
DP-V1 Class 2 Read
0x56
Reads data from a DP-V1 slave using Slot_Number and
Index parameters through a Class 2 connection
See section 9.2.5, DP-V1 Class 2 Read Command.
DP-V1 Class 2 Write
0x57
Writes data to a DP-V1 slave using Slot_Number and
Index parameters through a DP-V1 Class 2 connection.
See section 9.2.6, DP-V1 Class 2 Write Command.
