Pcu 321; Overview - Siemens SINUMERIK 840D sl Operating Manual

PCU 321

10.1

Overview

The SINUMERIK PCU 321 is a powerful computer unit of the same type of construction as
the SIMATIC S7-300 allowing simple installation on an S7 mounting rail.
Figure 10-1
(1) Rating plate
(2) Front door (to fold open)
(3) Mode switch
(4) LEDs
Five Ethernet ports are available on-board as a communication interface. Two of these ports
are configured as standard Ethernet interfaces and three as PROFINET interfaces. An
additional two USB interfaces are available for connecting I/O devices (such as a USB boot
stick). The PCU 321 can be operated with the user interface HMI sl (specially configured for
the PCU 321) and HMI-Pro sl (Transline).
The SINUMERIK PCU 321 can be used in conjunction with SIMATIC CPUs for:
HMI sl Universal
Operating Manual, 11/2006, 6FC5398-6AP10-1BA0
View of a PCU 321 (closed)
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