ProSoft Technology PS69-DPS - Manual (Page 52)

RSLogix Example Program PS69-DPS ♦ CompactLogix or MicroLogix Platform
User Manual Profibus DP Slave Communication Module
Page 52 of 108 ProSoft Technology, Inc.
May 9, 2014
3.2 CompactLogix Messaging Example
This ladder logic program is a CIP messaging example for the setup of the
PROFIBUS-DP Slave communications module "PS69-DPS" in RSLogix5000.
This example can be used to start a project when using a CPU 1769-L32, which
supports CIP messaging. Basic PROFIBUS I/O data exchange and all
messaging function examples are shown. Details on the Subroutines created and
the User Defined Data Types are as follows.
 MainRoutine: The MainRoutine calls all of the following routines based on
conditions such as doing a diagnostic request or to check the progress of
each individual DPV1 function issued by the Master. This routine also
contains a simple I/O transfer function block.
 Diagnostic_Req: This subroutine Diagnostic_Req assembles a Diagnostic
Request message which will be sent to the Master. A CIP Generic Message
is used to send this message.
 Diagnostic_Req_Progress: This subroutine Diagnostic_Req_Progress
checks the status of the diagnostics request message sent to the Master.
When the Diagnostic request is done it will increment a status counter to
check how many requests have been send successfully and how many failed.
 DPV1C1_Alarm_Req: This subroutine DPV1C1_Alarm_Req assembles a
DPV1 Alarm message which will be sent to the Master. A CIP Generic
Messages is used to send this message.
 DPV1C1_Alarm_Req_Progress: This subroutine
DPV1C1_Alarm_Req_Progress checks the status of the Alarm request
message sent to the Master. When the Alarm request is done it will increment
a status counter to record how many requests have been send successfully
and how many have been failed.
 DPV1C1_Progress: This subroutine DPV1C1_Progress checks the
inprogress bit of each service and sends the appropriate response. CIP
Generic Messages are used to send the response message from the Slave to
the Master.
 DPV1C1_Read_Resp: This subroutine DPV1C1_Read_Resp assembles the
DPV1 Read response message. A CIP Generic Message is used to send this
message. This routine will return immediately if there is still a DPV1 Read
Response in progress.
 DPV1C1_Read_Resp_Progress: This subroutine
DPV1C1_Read_Resp_Progress checks the status of the DPV1 Read
Response sent to the Master. When the Read response request is done it will
increment a status counter to record how many response requests have been
sent successfully and how many failed.
 DPV1C1_Write_Resp: This subroutine "DPV1C1_Write_Resp" assembles
the DPV1 Write response message. A CIP Generic Message is used to send
this message. This routine will return immediately if there is still a DPV1 Write
Response in progress.