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SIMATIC PCS 7 process control system

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Process I/O<br />

The right solution for every requirement<br />

The <strong>SIMATIC</strong> <strong>PCS</strong> 7 <strong>process</strong> <strong>control</strong> <strong>system</strong> offers various possibilities<br />

for connecting I/O devices as well as for detecting and<br />

emitting <strong>process</strong> signals through sensors and actuators:<br />

■ Analog and digital I/O modules of the <strong>SIMATIC</strong> S7-400 operated<br />

centrally in the automation <strong>system</strong><br />

■ ET 200M, ET 200S, ET 200iSP distributed I/O <strong>system</strong>s with<br />

an extensive range of cost-effective signal and function<br />

modules, connected through PROFIBUS DP to the automation<br />

<strong>system</strong> (AS)<br />

■ Direct AS connection of intelligent, distributed field/<strong>process</strong><br />

devices and operator terminals through PROFIBUS<br />

DP/PA (also redundant or in hazardous zones 1 or 2, sensors<br />

also in zone 0)<br />

In practice, automation in the field area is largely characterized<br />

by distributed <strong>process</strong> I/Os:<br />

■ ET 200 remote I/Os in conjunction with classical field/<strong>process</strong><br />

devices and HART field devices as well as<br />

■ intelligent field/<strong>process</strong> devices directly on PROFIBUS.<br />

In addition to the wide technical bandwidth, the following<br />

properties speak for the distributed <strong>process</strong> I/Os:<br />

■ Modularity and uniformity<br />

■ Flexible adaptability to the plant structure<br />

■ Minimum cabling and engineering requirements<br />

■ Low commissioning, servicing and lifecycle costs.<br />

On the other hand, <strong>SIMATIC</strong> S7-400 signal modules used centrally<br />

in the automation <strong>system</strong> have little significance in the<br />

context of <strong>SIMATIC</strong> <strong>PCS</strong> 7. These modules are at most an alternative<br />

to distributed I/Os for small applications or plants with<br />

limited distributed expansion.<br />

ET 200iSP with redundant power supply<br />

Possible online modifications among the <strong>process</strong> I/Os<br />

ET 200M<br />

ET 200iSP<br />

ET 200S<br />

PROFIBUS DP, PROFI-<br />

BUS PA<br />

• Adding of ET 200M stations<br />

• Adding of I/O modules for the station<br />

• Reparameterization of I/O modules<br />

• Parameterization of connected HART<br />

field devices with <strong>SIMATIC</strong> PDM<br />

• Adding of ET 200iSP stations<br />

• Adding of modules for the station<br />

• Reparameterization of modules<br />

• Adding of ET 200S stations<br />

• Adding of PROFIBUS DP stations<br />

• Adding of DP/PA links and field devices<br />

• Parameterization of field devices with<br />

<strong>SIMATIC</strong> PDM<br />

Standard <strong>process</strong> I/Os for <strong>SIMATIC</strong> <strong>PCS</strong> 7<br />

The following standard <strong>process</strong> I/Os are recommended for the<br />

<strong>SIMATIC</strong> <strong>PCS</strong> 7 <strong>process</strong> <strong>control</strong> <strong>system</strong> for automation in the<br />

field area:<br />

■ ET 200M distributed I/O <strong>system</strong><br />

■ ET 200iSP distributed I/O <strong>system</strong><br />

■ ET 200S distributed I/O <strong>system</strong><br />

■ PROFIBUS PA devices according to PA profile 3.0<br />

Further <strong>process</strong> I/Os can be integrated into <strong>SIMATIC</strong> <strong>PCS</strong> 7 via<br />

the PROFIBUS using add-on blocks. Some examples include:<br />

■ SIMOCODE pro motor management <strong>system</strong><br />

■ MICROMASTER 3/4 frequency converters<br />

■ SIWAREX M/U/FTA/FTC weighing <strong>system</strong>s<br />

Process I/O 47

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