TAMAGAWA TS5008N66 TS5008N66 TS5008N66 TS5008N66 TS5008N66 TS5008N66

TS3103N156

TS5008N66

TS5778N155

TS3630N3E5

TS5003N632

TS4244N10E24

TS1982N56E18

800123-R-F

TS3653N65E27

TS5208N23

TS3630N101E2

TS5017N56

TS5005N122 

TS4244N3E24

TS1983N146E5

TS3653N81E27

TS2025N471E69

TS3630N102E4

TS5017N60

TS5007N122

TS4502N1000E200

TS1983N146E5

TS3653N78E5

TS2014N181E32

Remote connection via IM 460-3 and
IM 461-3 102.25 m
Remote connection via IM 460-4 and
IM 461-4The racks of the system form the basic framework which accepts the
individual modules. The modules exchange data and signals and are powered via
the backplane bus. The racks are designed for wall mounting, for mounting on rails,
and for installation in frames and cabinets.Rack for all module types in the S7 400
UR2 9
munication
bus
or
ER
Rack for all module types in the .
ER1 18
Restricted I/O ERs
Racks for signal modules (SMs), receive
IMs, and all power supply modules.
The I/O bus has the following restrictions:
• Interrupts from modules have no
effect because no interrupt lines
exist.
• Modules are not supplied with 24 V,
ER2 9
Restricted I/O
bus ERs Modules are not supplied with 24 V,
i.e. modules requiring 24 V cannot
be used (see technical data of the
modules).
• Modules are neither backed up by
the battery in the power supply
module nor by the voltage applied
externally to the CPU or receive IM
(EXT.BATT. socket).
CR2 18
I/O bus,
segmented Segmented
Rack for all module types in the
except receive IMs. CR2 18 segmented
munication
bus, continuous
Segmented
CR
p
The I/O bus is subdivided into 2 I/O bus
segments of 10 and 8 slots respectively.
CR3 4
I/O bus
munication
bus
CR in standard
systems
Racks for all module types except
receive IMs. CPUs 41x-H only in
stand-alone operation.
UR2-H 2*9
I/O bus,
segmented
munication
bus, segmented
Subdivided CR or
ER for pact installation
of a fault--
tolerant system
Rack for all modules except
send IMs.
The I/O bus and munication bus are

ivided into 2 bus segments, each with 9
slots.The modules inserted in the rack are supplied with the required operating voltages
(5 V for logic, 24 V for interfaces) via the backplane bus and base connector, by the
power supply module fitted in the slot on the extreme left in the rack.
For local connections, ERs can also be supplied with power via the
IM 460-1 / IM 461-1 interface modules.
5 A may flow through each of the two interfaces of a send IM 460-1, meaning each
ER in a local connection can be supplied with up to 5 A.
I/O Bus

The I/O bus is a parallel backplane bus designed for the fast interchange of
I/O signals. Each rack has an I/O bus. Time-critical operations to access the
process data of the signal modules take place via the I/O bus.
munication Bus (C Bus)
The munication bus (C bus) is a serial backplane bus designed for the fast
exchange of large volumes of data parallel to the I/O signals. Except for racks ER1
and ER2, each rack has a munication bus.
Rack with I/O Bus and munication Bus
The following figure shows a rack with an I/O bus and a munication bus. The
I/O bus connector and munication bus connector can be seen at each slot.
When the rack is delivered, these connectors are protected by a coverThe “segmented” characteristic relates to the configuration of the CR. In the
(non-segmented) CR the I/O bus is continuous and interconnects all 18 or 9 slots;
in the segmented CR, however, the I/O bus consists of two I/O bus segments.
A segmented CR has the following important characteristics: