http://support.automation.siemens.com/WW/view/en/25545680Library Description y 12/2013Sending and Receiving ofText Messages via serialCPs/CMs and GPRS/GSMModem MD720-3CP340, CP341, CP441-2, 1SI, CM PtP, SINAUT MD720-3, STEP 7 V13

Siemens MD720-3 Manual

Preface

Product Description

Components for a Point-to-Point Connection with the CP 340

Software Components for a Point-to-Point Connection with the CP 340

Design of the CP 340

Properties of the serial interface

mA–TTY interface on the CP 340–20mA-TTY

X27 (RS 422/485) Interface of the CP 340–RS 422/485

Serial Transmission of a Character

PtP coupling and configuration of CP

Transmission mode in Point-to-Point Communication

Transmission integrity

Data Transmission with the 3964(R) Procedure

Block Checksum

Sending Data with 3964(R)

Receiving Data with 3964(R)

Handling Errored Data

Data transfer using the ASCII driver

Sending Data with the ASCII Driver

Receiving Data with the ASCII Driver

BREAK - Monitoring on CP 340

Data transmission with the printer driver

Parameterization Data

Parameterization Data of the 3964(R) Procedure

Parameterization data of the ASCII driver

Parameterization data of the printer driver

Conversion and Control Statements for Printer Output

display type

Starting up the CP 340

Mounting the CP 340

Installing and removing the CP 340

Removal steps

Configuring and Parameterizing the CP 340

Parameterizing the Communications Protocols

Installing the engineering tool

Configuring the CP 340

Managing the Parameter Data

Identification data

Download of firmware updates

Communication using function blocks

Overview of the Function Blocks

Using the function blocks for connecting to a communications processor

S7 receives data from a communication partner

Using function blocks for the output of message texts to a printer

Use of function blocks for reading and controlling the RS 2332C secondary signals

Delete receive buffer, FB12 "P_RESET

General Information on Program Processing

Technical data of the function blocks

Startup

Startup Characteristics of the CP 340

Behavior of the CP 340 on Operating Mode Transitions of the CPU

Diagnostics with the CP 340

Diagnosis via the Display Elements of the CP 340

Diagnostics Messages of the Function Blocks P_SEND, P_RCV and P_PRINT

Diagnostics via the S7-300 backplane bus

Diagnostics by means of the diagnostic buffer of the CP 340

Programming Example for Standard Function Blocks

Device Configuration

Settings

Blocks Used

Example "Point–to–Point Communication

Example "Printing" and "Reading and Controlling the CP 340 Inputs/Outputs

Installation, Error Messages

Activation, Start-Up Program and Cyclic Program

A.1 Technical Specifications of the CP 340

A.2 Recycling and Disposal

B.1 RS 232C interface of the CP 340–RS 232C

B.2 20 mA TTY interface on the CP 340-20mA-TTY

B.3 X27 (RS 422/485) Interface of the CP 340–RS 422/485

Glossary

Index

SIMATIC CP 340

SIMATIC CP 341

CM PtP

CP441-2

SINAUT MD720-3

STEP 7 V13

Siemens MD720-3 Manual

Product

Learn More

Legal