Ai 4/Ao 2 X 8/8 Bits - Siemens SIMATIC S7-300 Reference Manual

Programmable logic controllers module data

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Module View and Block Diagram of the

Select the measuring method of the input channels and the output type of the

output channels via the wiring.

Module View and Block Diagram of the Analog Input/Output Module SM 334;

AI 4/AO 2 x 8/8 bits

Note when connecting the SM 334 that:

the analog chassis ground M

chassis ground M of the CPU and/or the interface module (IM). Use a wire

with a minimum cross-section of 1 mm

If there is no ground connection between M

off. Inputs are read with 7FFF

without a ground connection for some time, it may be destroyed.

The supply voltage for the CPU and/or the interface module (IM) must not

be connected with reversed polarity. Reverse polarity causes the

destruction of the module because M

potential (+24 V).

Programmable Logic Controllers S7-300 Module Data

A5E00105505-03

SM 334; AI 4/AO 2 x 8/8 bits

; outputs return a value of 0. If the module is run

(terminal 15 or 18) is connected to the

and M, the module switches

is subjected to an unauthorized high

Analog Modules

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