Programming - Siemens SIMATIC ET 200SP Manual

Programming

Instructions
Pre-written instructions are available as an interface in your STEP 7 user program for
communication services.
Table 4- 1 Instructions for PROFIBUS DP
Instructions Meaning when used with CM DP
DP master
DPSYC_FR Synchronize DP slaves/Freeze inputs
(SYNC/FREEZE instruction)
DPNRM_DG Read diagnostics data of a DP slave
DP_TOPOL Determine topology for DP master system
WRREC Write data record of a DP slave
RDREC Read data record of a DP slave
GETIO Read process image of a DP standard slave
SETIO Transfer process image of a DP standard slave
GETIO_PART Read process image area of a DP standard
slave
SETIO_PART Transfer process image area of a DP standard
slave
D_ACT_DP Enable/disable DP slaves
DPRD_DAT Read consistent data of a module (user data)
DPWR_DAT Write consistent data of a module
RALRM Event-driven reading of alarm information
(diagnostics, pull/plug, hardware interrupt) as
well as DPV1-specific interrupts (update, status,
vendor-specific interrupt)
Read the documentation for the instructions in the STEP 7 online help
14
DP slave (I-slave)
-
-
-
-
-
Read process image
Transfer process image
Read process image area
Transfer process image area
-
Event-driven reading of interrupt information
(diagnostic interrupt)
Communication module CM DP (6ES7545-5DA00-0AB0)
Manual, 12/2014, A5E33619758-AB
4