4
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HSLink Introduction
Then, with the developing of communication technology and popularization
of networking, networking modules such as Ethernet became available.
This improvement evolved the following architecture. The medium character
of MPC is replaced.
Figure 1.3: networking PLC
Now, PLC is capable of network communicating, but it is usually very
expansive. This is because the PLC are not an open architecture, only the
hardware venders can make it.
With HSLink, the distributed control architecture can become the figure 1.4.
User does not need one extra PC for Ethernet communication. User can
use one IPC to control the whole system.
Figure 1.4: HSLink as distributed PLC
PLC
Web Server
PLC
PLC
HMI
SCADA
PLC
Network
16DI
16DI
16DI
16DI
16DI
HSL Master
IPC
Slave I/O Module
RJ45/10BaseT
