Beckhoff M2400 Manuel d'utilisateur télécharger pdf (Page 3)

M2400 Analog Output Beckhoff I/O-System

Date : 11.06.2002 Version : 2.1 Page 3 of 3

1. Function Description Hardware

M2400

About the Hardware

The parallel module M2400 is an input / output module used in the II/O system. There are 16

standard 24 V inputs / outputs, which achieve 2 ports of 8 bit each, and four analog output

channels.

Each input / output has an LED, that indicates the current state. Furthermore there are three

LED's installed used for diagnosis of the II/O fibre optical ring:

LD1 The green 'CYCLE' LED is switched on by each start bit of a telegram and is

switched off again by the stop bit.

LD2

The red 'ERROR' LED is switched on after recognition of bad telegram (checksum,

frame). After a sequence of three correct telegrams (checksum, frame) were processed it

is switched off again.

LD3

The green LED 'WATCHDOG' is switched on by a valid writing telegram with matching

address. If no telegram with the properties defined above is recognised for the next

100 ms a special unit of the module switches off all outputs.

In case an error is detected, all outputs are reset.

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Beckhoff M2400 Manuel d'utilisateur Page 3