Siemens SITOP PSU6200 Gebrauchsanweisung

SITOP PSU6200

Diagnostics Interface

SITOP power supply

SITOP PSU6200

Diagnostics Interface

Application Manual

04.2019

A5E46632255

-1-76

Introduction

Technical description

Siemens AG

Digital Industries

Postfach 48 48

90026 NÜRNBERG

GERMANY

A5E46632255-1-76

Ⓟ

05/2019 Subject to change

Legal information

Warning notice system

This manual contains notices you have to observe in order to ensure your personal safety, as well as to prevent

damage to property. The notices referring to your personal safety are highlighted in the manual by a safety alert

symbol, notices referring only to property damage have no safety alert symbol. These notices shown below are

graded according to the degree of danger.

DANGER

indicates that death or severe personal injury will result if proper precautions are not taken.

WARNING

indicates that death or severe personal injury may result if proper precautions are not taken.

CAUTION

indicates that minor personal injury can result if proper precautions are not taken.

NOTICE

indicates that property damage can result if proper precautions are not taken.

If more than one degree of danger is present, the warning notice representing the highest degree of danger will

be used. A notice warning of injury to persons with a safety alert symbol may also include a warning relating to

property damage.

Qualified Personnel

The product/system described in this documentation may be operated only by personnel qualified for the specific

task in accordance with the relevant documentation, in particular its warning notices and safety instructions.

Qualified personnel are those who, based on their training and experience, are capable of identifying risks and

avoiding potential hazards when working with these products/systems.

Proper use of Siemens products

Note the following:

WARNING

Siemens products may only be used for the applications described in the catalog and in the relevant technical

documentation. If products and components from other manufacturers are used, these must be recommended

or approved by Siemens. Proper transport, storage, installation, assembly, commissioning, operation and

maintenance are required to ensure that the products operate safely and without any problems. The permissible

ambient conditions must be complied with. The information in the relevant documentation must be observed.

Trademarks

All names identified by ® are registered trademarks of Siemens AG. The remaining trademarks in this publication

may be trademarks whose use by third parties for their own purposes could violate the rights of the owner.

Disclaimer of Liability

We have reviewed the contents of this publication to ensure consistency with the hardware and software

described. Since variance cannot be precluded entirely, we cannot guarantee full consistency. However, the

information in this publication is reviewed regularly and any necessary corrections are included in subsequent

editions.

SITOP PSU6200 Diagnostics Interface

Application Manual, 04.2019, A5E46632255-1-76 3

Table of contents

1 Introduction................................................................................................................................................ 5

2 Technical description................................................................................................................................. 7

2.1 Hardware layer..........................................................................................................................7

2.2 Telegrams for the diagnostics interface (DIS) ..........................................................................9

2.2.1 Overview ...................................................................................................................................9

2.2.2 Detailed meaning of the individual bits ...................................................................................10

2.2.3 Telegram send sequence .......................................................................................................16

Table of contents

SITOP PSU6200 Diagnostics Interface

4Application Manual, 04.2019, A5E46632255-1-76

SITOP PSU6200 Diagnostics Interface

Application Manual, 04.2019, A5E46632255-1-76 5

Introduction

To facilitate communication in a simple and favorably priced fashion, the newly developed

devices of the PSU6200 product group are equipped with a proprietary data interface. To a

large extent this data interface uses already existing components and infrastructure of power

supplies and control systems. This interface is described in detail in the following document.

Introduction

SITOP PSU6200 Diagnostics Interface

6Application Manual, 04.2019, A5E46632255-1-76

SITOP PSU6200 Diagnostics Interface

Application Manual, 04.2019, A5E46632255-1-76 7

Technical description

Devices of the PSU6200 product group are equipped with a data interface that can be

connected with a higher-level control and evaluation system, for example, connected with a

SIMATIC system via a digital input. Statuses as well as measured values - such as output

voltage or output current of the specified devices - are transferred to the higher-level control

and evaluation system via the interface, called the diagnostics interface DIS.

The diagnostics interface, which is unidirectional, can only send data to the higher-level

control and evaluation system. Data cannot be received.

The diagnostic interface design is described in detail in the following.

2.1 Hardware layer

A device equipped with DIS should be connected to a higher-level control and evaluation

system as follows.

Contacts 13 and 14 are isolated (floating), and using DIP switches can be alternatively

configured as conventional status relay. A pull-down resistor must be internally connected to

the digital input.

The content of the DIS is transferred in a protocol using telegrams comprising a continuous

flow of bits. The last bit of a telegram that has been transferred is immediately followed by

the start character of the next telegram. The signal at the receiving input (Digital In) of the

higher-level control and evaluation system looks like this:

Technical description

2.1 Hardware layer

SITOP PSU6200 Diagnostics Interface

8Application Manual, 04.2019, A5E46632255-1-76

The start character comprises a low signal level with a duration of 50 ms, followed by a high

signal level with a duration of 150 ms and a low signal level with a duration of 50 ms.

The individual bits are sent using the Manchester code. A bit has a duration of 100 ms;

whereby, the high signal level and the low signal level are each 50 ms long. A "0" is

represented by a falling signal edge - i.e. a high signal level followed by a low signal level. A

"1" is represented by a rising signal edge.

The duration of a bit has a ±5 % tolerance.

The high signal level corresponds to 24 V electrical and the low signal level to ground.

Technical description

2.2 Telegrams for the diagnostics interface (DIS)

SITOP PSU6200 Diagnostics Interface

Application Manual, 04.2019, A5E46632255-1-76 9

2.2 Telegrams for the diagnostics interface (DIS)

2.2.1 Overview

Every transfer telegram of the DIS has an exclusive start sequence with a length of 32 bits.

Each bit has a length of 100 ms.

The first six transferred bits - the header bits - designate the device type and the content of

the telegram. Bit 7 - bit 31 contain the user information (information that can be evaluated).

Bit 32 contains the parity.

Bit no.

Meaning

Resolution

Value range

Comment

1 - 3 Device identifi-

cation

0 - 7 001: SEL1200

010: SEL1400

011: PSU6200

000, 100 - 111: reserved

4 Reserved - - This bit is always "0"

5 - 6 Telegram iden-

tification

0 - 3 00: -

01: -

10: -

11: -

Marks the following user information (information

that can be evaluated). Meaning dependent on the

device identification. See the following chapter

7 - 31 Data - - Meaning dependent on the device and telegram

identification. See the following chapter

32 Parity 0 / 1 - The parity bit (odd parity) at the end of the telegram

is "1" if the sum of all of the preceding 1 bits in the

telegram is even. Otherwise, the parity bit is "0". The

start sequence is not taken into account when gen-

erating the parity bit.

Technical description

2.2 Telegrams for the diagnostics interface (DIS)

SITOP PSU6200 Diagnostics Interface

10 Application Manual, 04.2019, A5E46632255-1-76

2.2.2 Detailed meaning of the individual bits

Devices from product group PSU6200 are marked using the following header bits when data

is transferred via the DIS.

Bit no.

Meaning

Resolution

Value range

Comment

1 - 3 Device identifi-

cation

0 - 7 011: PSU6200

Reserved

This bit is always "0"

5 - 6 Telegram iden-

tification

0 - 3 00: -

01: -

10: -

11: -

See the following chapter

Bits 7 - 31 follow the header; they contain information about the device data, measured

values and status information. The rough structure of the existing telegrams is shown below.

Header

Status information

Voltage and current values

Bits 1 - 6

Bits 7 - 13

Bits 14 - 31

Header

Status information

Rated data and device information

Bits 1 - 6

Bits 7 - 13

Bits 14 - 31

Header

Status information

Device information

Bits 1 - 6

Bits 7 - 13

Bits 14 - 31

Header

Status information

Temperature and service life

Bits 1 - 6

Bits 7 - 13

Bits 14 - 31

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