Chapter 5 Master Control Unit
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LK220 Master Control Module
Support hot-plug of the module and the SD card
IO supported by system is not less than 10,000
points
Input Variable Area (Area I)
Output Variable Area (Area Q)
Global Variable Area (Area G)
Free Variable Areas (Zone M)
Specified Register Area (Area S)
The space is fixed to be 2KB
Related to the output of LK921
Module Dissipation (max.)
Based on battery/capacitance power supply
Support dual-machine redundancy
Time from the moment when the module is powered on to the
moment when the user's project begins
44.7 mm*166 mm*152 mm
±
0.5mm
5.4 LK249 DP Master Station
Communication Module
LK249 is a DP master station communication module for large-scale PLC of the new-generation LK
Series. The module has 2 DB9 communication interfaces, supporting Hollysys PROFIBUS-DP master
station communication protocol. It can be connected to up to 124 slave stations.
5.4.1 Features
Support the PROFIBUS-DP master station communication protocol