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2.1.1
Communication via Ethernet
2.1.2
Communication via LAN
2.2
Decentralized In-/Outputs
1070 072 263-101 (01.08) GB
The Ethernet is defined in the IEEE 802.3 specification. All computers con-
nected to the Ethernet network system share the same cable and the
highest possible bandwidth of 10 Mbits/s or 100 Mbits/s.
Ethernet and Internet protocols are the basis for communication. On an
Ethernet basis, the UDP/IP standard protocol is used to send Bosch BÜP
commands.The thus created protocol is called BÜP-E. To do so, the ZS550
is provided with two Ethernet interfaces. The interfaces can be operated with
up to 100 Mbits/s. One interface is located on the frontside, the other is lo-
cated on the back and serves for communication on the system bus.
Communication via TCP/IP Ethernet is used with the following two applica-
tions:
D Communication PLC – HMI (Human Machine Interface): Each CL550
central processing unit communicates with the corresponding HMI via
the front Ethernet interface.
D Communication PLC – PLC: The central processing units communicate
with each other on an Ethernet basis via the CON550 module.
The Ethernet interface on the frontside of the CPU serves for external net-
working in LAN.
With the 100Base-T, the network structure in the local network must be real-
ized via starshaped patch cabling with 100 Mbits/s. Each device must be
connected to the network component (hub, switch, etc.) via cables whose
maximum length is 100 m each.
.
The length of the cables shall under no circumstances be exceeded.
The CL550 is provided with decentralized peripherals only (digital and ana-
log in- and outputs). The peripherals must be connected either via PROFI-
BUS coupling on which the DP-V1 protocol is implemented or via an
InterBus-S interface which is implemented on the ZS550-DP-IBS module.
.
Peripherals can be connected centrally via the expansion racks CL200
(RM2-DP12 module) and CL400 (RM4-DP12 module). For further in-
formation regarding the expansion racks refer to the CL200 and CL400
manuals.
System Overview CL550
2–3
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