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Application Module FM 458-1 DP - User Manual 2-17

A5E01078222-02 Edition 03.2009

2.2.2 Performance features

 8 incremental encoders:

 4 absolute value encoders (SSI or EnDat)

 5 analog inputs

 4 analog outputs 12 Bit (analog outputs 5 - 8)

 4 analog outputs 16 Bit (analog outputs 1 - 4 )

 16 binary inputs, 24 V

 8 binary outputs, 24 V

 Fanless operation up to 40 C air intake temperature (ambient

temperature) possible.

 8 LEDs which the user can configure as required

LED displays H1 to H8, when required, can be controlled using

function block BIQ8 (binary output).

LEDs H9 and H10 have no function.

 LE bus

The LE bus ensures fast data transfer between the FM 458

application module and its expansion modules.

 P bus

The peripheral bus (P bus) is the parallel SIMATIC backplane bus,

which only provides the power supply for the EXM 438-1.

The DC load current power supply must meet the following requirements:

Only a safe, isolated extra-low voltage of DC  60 VDC may be used as

the load current supply. Isolation may be implemented according to the

requirements of the following, amongst other publications:

VDE 0100-410 / HD 384-4-41 S2 / IEC 60364-4-41

(as a functional extra-low voltage with isolation) or

VDE 0805 / EN 60950 / IEC 60950

(as a safely extra-low voltage SELV) or VDE 0106 Part 101.

NOTE

Ground-free operation is not possible when using the EXM 438-1.

EXM 438-1 is an “open type” and therefore only can be installed in

closed switch cabinets or switch rooms.

Load Current

Power Supply

Siemens SIMATIC FM 458-1 DP User Manual

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