Siemens simatic ET 200MP Manuel - Page 24

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Parameter

4.2 Description of parameters

4.2

Description of parameters

4.2.1

Parameter "Connection to supply voltage L+"

This parameter is used

● for diagnostics of the ET 200MP:

If the actual configuration is different from the required configuration of the interface

module supply voltage set with this parameter, the ET 200MP generates a diagnostic

alarm.

● to check the power budget for the configuration with STEP 7 V12:

Depending on how the parameter is set, either the infeed power for the interface module

into the backplane bus or the power consumption from the backplane bus is entered into

the calculation of the power budget.

The default setting "Connection to supply voltage L+ " means that the front of the interface

module is supplied with 24 V DC and feeds power into the backplane bus.

Note

We recommend that you always supply the front of the interface module with 24V DC

because if you then insert a power supply module (PS) upstream of the interface module,

both the power of the power supply module (PS) and the power of the integrated power

supply of the interface module are available for the I/O modules (power addition of PS infeed

power + IM infeed power in power segment 1).

In this case, you do not have to change the default of the parameter in STEP 7.

The setting "No connection to supply voltage L+ means that the interface module is not

supplied with 24 V DC on the front. This can only be the case when a power supply module

(PS) is inserted upstream from the interface module and the power supply modules (PS)

supply the interface module and the downstream modules. In the case of an interface

module without power supply, its power consumption from the backplane bus must be

considered as consumer in the power budget and the power segments must be formed

accordingly.

Reference

See the section on the power budget and the forming of power segments in the ET 200MP

distributed I/O system (https://support.industry.siemens.com/cs/ww/en/view/59191792)

System Manual.

Interface module IM 155-5 PN ST (6ES7155-5AA01-0AB0)

Manual, 11/2017, A5E03612323-AC