Specifications

Technical Description Section 6-2

6.2 Technical Description

The interfacing of the operating terminal to the Klöckner Moeller PLCs is effected

by means of the SUCOM1 programming protocol.

The SUCOM1 protocol allows random read and write access to all PLC data. All

data types can also be accessed in bit-mode. The size of the address area depends

on the respective PLC.

A read access to the addressed word must occur, before individual bits can be

accessed for a write operation. During these accesses, care must be taken to en-

sure that neither the terminal nor the PLC modify individual bits of the same word.

6.3 Protocol Parameters SUCOM1

The parameters of the interface SER1 are set to the following values:

Baud rate: 300, 600, 1200, 2400, 4800, 9600, 19200, 38400, 375000,

500000 Baud

Data bits: 5, 6, 7, 8

Stop bits: 1, 1.5, 2

Parity: none, even, odd

Handshake: no handshake, hardware, software

The default values of the programming system are printed in bold.

6.4 Data Types

I input bits (bit access)

Q output bits (bit access)

M ﬂag bits (bit access)

IB input bytes (byte access)

QB output bytes (byte access)

MB ﬂag bytes (byte access)

IW input word (word access)

QW output word (word access)

MW ﬂag word (word access)

PS process status word (word access)

DS diagnostic word (word access)

DZ diagnostic counter (word access)