Parker ACR9000, Руководство по установке

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Parker Hannifin
ACR9030 and ACR9040
The ACR series includes two ACR9000-based ETHERNET Powerlink (EPL)
motion controllers—the ACR9030 and ACR9040. They are each equipped
with an EPL daughter card, two EPL connectors, and an EPL Status LED.
They use standard EPL technology without altering existing ACR9000
features.
The ACR9030 is based on the ACR9000 hardware. It will support up to 16
axes total. Some or all of the axes may be EPL Nodes, and a maximum of 8
may be traditional axes. The ACR9040 is a DC-powered EPL controller, and
will support up to 16 EPL nodes.
Introduction to ETHERNET Powerlink (EPL)
ETHERNET Powerlink (EPL) is an open standard communication profile for
real time Ethernet. It was developed to achieve the timing and performance
required in automation and motion control applications while reducing cabling
costs and complexity. EPL uses standard Ethernet for the data link layer, but
imposes timing rules for all members of an EPL network, rules that prevent
collisions and ensure precise periodic data exchange.
EPL Cycles and Nodes
A member of an EPL network is called a node. There may be only one
managing node (MN) and up to 16 controlled nodes (CN). As the names
imply, the MN starts and stops the network, and initiates all communication.
Controlled nodes respond to requests from the MN. All communication takes
place periodically within an EPL cycle. See Figure 41.
Illustration courtesy of ETHERNET Powerlink Standardization Group (EPSG)
Figure 41 EPL Network Communication
162 ACR9000 Series Hardware Installation Guide
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