SIEMENS
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Siemens IK PI · 2015
PROFINET/Industrial Ethernet
Industrial Ethernet Switches
Compact switch modules
CSM 1277 unmanaged
2
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Overview
•
Unmanaged switch for connecting a SIMATIC S7-1200 to an
Industrial Ethernet network with a line, tree or star topology
•
Multiplication of Ethernet interfaces on a SIMATIC S7-1200 for
additional connection of up to three programming devices,
operator controls, and further Ethernet nodes
•
Simple, space-saving mounting on the SIMATIC S7-1200
mounting rail
•
Low-cost solution for implementing small, local Ethernet
networks
•
Connection without any problems using RJ45 standard
connectors
•
Simple and fast status display via LEDs on the device
•
Integral autocrossover function permits use of uncrossed
connecting cables
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Benefits
•
Reduction in assembly costs and mounting space compared
to use of external network components
•
Fast commissioning, as no configuration is necessary
•
Flexible expansion of the network by simply inserting the CSM
■
Application
The CSM 1277 is an Industrial Ethernet switch of compact
design for use in the SIMATIC S7-1200. The CSM 1277 can be
used to multiply the Ethernet interface of the SIMATIC S7-1200
for simultaneous communication with operator panels,
programming devices, other controllers, or the office world.
The CSM 1277 and the SIMATIC S7-1200 controller can be used
to implement simple automation networks at low cost.
■
Design
The CSM 1277 compact switch module offers all advantages
of the SIMATIC S7-1200 design:
•
Compact design;
the rugged plastic enclosure contains:
- 4 x RJ45 ports for connecting to Industrial Ethernet
- 3-pole plug-in terminal strip for connection of the external
24 V DC supply on the top
- LEDs for diagnostics and for status display of the Industrial
Ethernet ports
•
Simple mounting on the mounting rail of the S7-1200
•
Fanless and consequently low-maintenance design
•
The module can be replaced without using a programming
device
■
Function
•
Multiplication of Ethernet interfaces of the SIMATIC S7-1200
•
Design of a small, local Industrial Ethernet network with three
further nodes
•
Automatic detection of data transfer rate by means of
autosensing and autocrossover functions
•
LEDs for diagnostics and for status display
Network topology and network configuration
Various network topologies can be implemented using the
CSM 1277 compact switch module:
•
Connection of SIMATIC S7-1200 in linear topology:
at least one RJ45 connection of the SIMATIC S7-1200 remains
vacant, e.g. for connecting a programming device (PG)
•
Connection of SIMATIC S7-1200 to a higher-level network in a
tree/star topology:
at least two RJ45 connections of the SIMATIC S7-1200 remain
vacant, e.g. for connecting a programming device/operator
panel (PG/OP)
•
Design of a small, local network with a SIMATIC S7-1200 and
three further Ethernet nodes
Configuration
The CSM 1277 compact switch module is an unmanaged switch
and need not be configured.
Diagnostics
The following information is displayed on LEDs on the device:
• Power
•
Port status
•
Data traffic
Linear topology with CSM 1277
SIMATIC S7-1200
with CSM 1277
SIMATIC S7-1200
with CSM 1277
SIMATIC S7-1200
with CSM 1277
G_IK10_XX_10271
Field PG
Industrial Ethernet
© Siemens AG 2014