Basic Overview of ET200 SP HA

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The high-performance I/O system SIMATIC ET 200SP HA – perfectly matched to the requirements of the process industry and with clear advantages wherever ruggedness and maximum availability are important in the process and manufacturing industry. Benefits Availability: Redundancy at the PROFINET interface (S2 or R1) Hot swapping during runtime station expansion possible during runtime Easy to Use: Compact modules with permanent wiring. One terminal block for all 24 V standard signals Tool-free connection system with push-in-terminals Compact Design Compact with up to 56 i/o modules per station High concentration of up to 32 channels on a module that is only 22.5 mm wide System-integrated power bus Seamless integration in SIMATIC PCS new PROFINET IO communication standard Functions Main functions Compact I/O modules Up to 32 channels on a module that is 22.5 mm wide Up to 56 modules per station Perfectly suited for applications in the field Installation up to hazardous zone 2 Extended temp
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TYPE OF RACK IN S7-400 SYSTEM

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TYPE OF RACK IN S7-400 SYSTEM

When using ER's, you need interface modules (IMs) as well as the additional racks, and additional power supply modules if necessary.

The rack containing the CPU is known as the central rack (CR). The racks containing modules in the system and connected to the CR are the expansion racks (ERs).

Below are the details of Send and Receive IM with distance and maximum connections

 

SEND IM

IM 460-0

IM 460-1

IM 460-3

IM 460-4

RECEIVE IM

IM 461-0

IM 461-1

IM 461-3

IM 461-4

Max Number of Connection per EM

4

1

4

1

Max Distance

5 m

1.5 m

102.25 m

605 m

5 V transfer

No

Yes

No

No

Communication Bus

Yes

No

Yes

No

 

Rules:

You can connect up to 21 ERs of the S7-400 to one CR.

ER must be assigned number to identify. Rack number must be set on coding switch between 1 and 21.

You may insert up to six send IMs in one CR. However, only two send IMs with 5 V transfer are allowed in one CR.

Each chain connected to the interface of a send IM can comprise up to four ERs (without 5 V transfer) or one ER (with 5 V transfer).

Total cable length as specified above should not exceed.

Exchange of data via communication bus is limited to 7 rack.

 

I/O Bus

It is parallel backplane bus designed for fast interchange of I/O signal. Time-critical operations to access the process data of the signal modules take place via the I/O bus.

Communication Bus (K Bus)

The communication 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 communication bus.

Segmented CR (CR2)

Segmented CR also know as CR2 has communication bus in continuous while IO bus is divided in two segment of slot 10 and 8.

One CPU can be inserted in one local segment.

The two CPUs in a segmented CR may be in different operating states.

The two CPUs can communicate with each other via the communication bus.

All the modules inserted in a segmented CR are powered by the power supply module at slot 1.


RACKS in S7-400

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