Siemens M7-400 Benutzerhandbuch

E-1

S7-400, M7-400 Programmable Controllers Module Specifications
A5E00069467-07

AC

Alternating current

ADC

Analog to digital converter

AI

Aanalog input

AO

Analog output

AS

Automation system

BAF

Battery failure

BUSF1;
BUSF2

LED – bus failure on the MPI/Profibus DP interface 1 or 2

CD

Central device

CH

Channel

COMP

Compensating terminal

CP

Communications processor

CR

Central rack

CPU

Central processing unit of a PLC

DAC

Digital-to-analog converter

DB

Data block

DC

Direct current

DI

Digital input

DO

Digital output

EMC

Electromagnetic compatibility

EEPROM

Electrically erasable programmable read-only memory

EPROM

Erasable programmable read-only memory

ER

Expansion rack

ES

Encoder supply

ESD

Electrostatic sensitive devices

EWS

Apply substitute value

EXM

Extension module

EXTF

Error LED “external fault”

FB

Function block

FBD

Function block diagram