Connecting To The Plc; Programming Guidelines - Danfoss VLT Integrated Servo Drive ISD 510 System Operating Instructions Manual

Commissioning

6.4.2.4 Connecting to the PLC

Information on how to connect to the PLC can be found in
detail in the Beckhoff Information System (http://
infosys.beckhoff.com). Open the information system and go
to [TwinCAT 2 → TwinCAT System Manager → Operation →
Controls → Choose Target System].

6.4.3 Programming Guidelines

Recommendations for implementation:
•
Initialize parameters that usually do not change
only once at the beginning of the program. In
Automation Studio™, use the _INIT section.
•
Call up function blocks that provide status or
error information with Enable input at the
beginning of the program.
•
It is recommended to have 1 instance of the
function block MC_Power_ISD51x for every axis in
order to control its power stage. Call up this
function block in every PLC cycle.
•
It is recommended to have 1 instance of the
function block DD_Power_SAB for every SAB to
control the DC-link voltage on the output lines.
Call up this function block in every PLC cycle.
•
Call up function blocks that execute (motion)
commands at the end of the program.
•
Do not use any POUs of the library (folder)
Intern_51x.
•
Do not change the reference to the axis on a
function block while it is busy.
Illustration 6.18 shows sample code for TwinCAT
MG75K102
Operating Instructions
®
.
Illustration 6.18 Sample Code for TwinCAT
NOTICE
The full parameter list can be found in the VLT
Integrated Servo Drive ISD
Guide.
Danfoss A/S © 12/2015 All rights reserved.
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510 System Programming
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