DEUTSCHMANN AUTOMATION UNIGATE RS232/485 User manual

User manual
Universal Fieldbus-Gateway
UNIGATE®
UNIGATE RS232/485 - ProfibusDP
UNIGATE RS232/422 - ProfibusDP
UNIGATE SC232/485 - ProfibusDP
UNIGATE SC232/422 - ProfibusDP
V2381E
Deutschmann Automation GmbH & Co. KG Carl-Zeiss-Str. 8 D-65520 Bad Camberg
Tel:[phone] Hotline: [phone] Fax: [phone]
Internet: http://www.deutschmann.de

29.4.11 UNIGATE fieldbus gateway for ProfibusDP V. 4.7 3
Deutschmann Automation GmbH & Co. KG
1Information on CE marking of the module. . . . . . . . . . . . . . . . 8
1.1 EU Directive EMC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
1.2 Scope of application . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
1.3 Note installation guidelines . . . . . . . . . . . . . . . . . . . . . . . . . 8
1.4 Installation of the unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
1.5 Working on switch cabinets . . . . . . . . . . . . . . . . . . . . . . . . . 8
2Information for the machine manufacturers. . . . . . . . . . . . . . . 9
2.1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
2.2 EU Machinery Directive . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
3Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
3.1 UNIGATE RS software flow-chart . . . . . . . . . . . . . . . . . . . . . 11
3.2 UNIGATE SC software flow chart . . . . . . . . . . . . . . . . . . . . . 12
3.3 UNIGATE block diagram . . . . . . . . . . . . . . . . . . . . . . . . . 13
3.4 UNIGATE application diagram . . . . . . . . . . . . . . . . . . . . . . 13
4Operation modes of the gateway. . . . . . . . . . . . . . . . . . . . 14
4.1 Configuration mode (config mode) . . . . . . . . . . . . . . . . . . . . 14
4.2 Test mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
4.3 Data exchange mode . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
5RS-interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
5.1 Framing Check - only for UNIGATE RS . . . . . . . . . . . . . . . . . . 16
5.2 RS-interface at the UNIGATE SC . . . . . . . . . . . . . . . . . . . . . 16
5.3 Buffer size at the UNIGATE SC . . . . . . . . . . . . . . . . . . . . . . 16
6Mode of operation of the system . . . . . . . . . . . . . . . . . . . . 17
6.1 General explanation . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
6.2 Interfaces . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
6.3 Data exchange . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
6.4 Possible data lengths . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
6.5 Run-up phase . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
6.6 The trigger byte - only at UNIGATE RS . . . . . . . . . . . . . . . . . . 18
6.7 The length byte - only at UNIGATE RS . . . . . . . . . . . . . . . . . . 18
7Transparent mode - only at UNIGATE RS . . . . . . . . . . . . . . . 19
8Character-Delay-Time mode - only at UNIGATE RS . . . . . . . . . . 20
8.1 Receive direction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
9Implemented protocols in UNIGATE RS . . . . . . . . . . . . . . . . 21
9.1 Protocol ARCNET . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
9.1.1 Data exchange . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
9.1.1.1 Broadcast . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
9.1.2 Data structure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
9.1.2.1 Trigger byte . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
9.1.2.2 Length byte . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
9.1.2.3 ARCNET-ID. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
9.1.2.4 Data area . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
9.1.3 ARCNET configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
9.1.3.1 ARCNET-ID of the UNIGATE. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
9.2 Universal 232 protocol . . . . . . . . . . . . . . . . . . . . . . . . . . 22

Deutschmann Automation GmbH & Co. KG
4 UNIGATE fieldbus gateway for ProfibusDP V. 4.7 29.4.11
9.2.1 Data structure. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .22
9.2.2 Fieldbus parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .22
9.2.3 RS232 parameter table. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .22
9.2.3.1 Start character. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
9.2.3.2 Length 232. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
9.2.3.3 ID . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
9.2.3.4 Data area . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
9.2.3.5 Checksum . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
9.2.3.6 End character . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
9.2.4 Communication sequence . . . . . . . . . . . . . . . . . . . . . . . . . . . .23
9.3 The 3964 R protocol . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
9.3.1 Data structure 3964R. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .24
9.3.2 Protocol definitions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .24
9.3.3 Data communication . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .24
9.3.3.1 Initiation of data communication by the low-priority user . . . . . . . . . . . . . . . 24
9.3.3.2 Conflicts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
9.3.3.3 Timeout times . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
9.3.3.4 Retries. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
9.3.3.5 Initiation of data communication by the high-priority user . . . . . . . . . . . . . . . 24
9.3.4 State of the 3964R communication. . . . . . . . . . . . . . . . . . . . . . . .25
9.4 The RK512-protocol . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
9.4.1 Operating sequence of the data transmission . . . . . . . . . . . . . . . . . .26
9.5 MODBUS-RTU . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
9.5.1 Notes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .26
9.5.2 UNIGATE as MODBUS-Master . . . . . . . . . . . . . . . . . . . . . . . . .26
9.5.2.1 Preparation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
9.5.2.2 Data structure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
9.5.2.3 Communication sequence . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
9.5.3 UNIGATE as MODBUS-Slave . . . . . . . . . . . . . . . . . . . . . . . . . .27
9.5.3.1 Preparation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
9.5.3.2 Data structure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
9.5.3.3 Communication sequence. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
9.5.3.4 Status report. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
9.5.4 UNIGATE as Modbus-ASCII Master . . . . . . . . . . . . . . . . . . . . . . .28
10 Generating a script - only for UNIGATE SC. . . . . . . . . . . . . . . 29
10.1 What is a script? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
10.2 Memory efficiency of the programs . . . . . . . . . . . . . . . . . . . . 29
10.3 What can you do with a script device? . . . . . . . . . . . . . . . . . . 29
10.4 Independence of buses . . . . . . . . . . . . . . . . . . . . . . . . . . 29
10.5 Further settings at the gateway . . . . . . . . . . . . . . . . . . . . . . 29
10.6 The use of the Protocol Developer . . . . . . . . . . . . . . . . . . . . 30
10.7 Accuracies of the baud rates at UNIGATE SC . . . . . . . . . . . . . . 30
10.8 Script processing times . . . . . . . . . . . . . . . . . . . . . . . . . . 31
11 Hardware ports, switches and LEDs . . . . . . . . . . . . . . . . . . 32
11.1 Drawing of the unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
11.1.1 Model UNIGATE RS / SC 232/485-ProfibusDP . . . . . . . . . . . . . . . . .32
11.1.2 Model UNIGATE RS / SC 232/422-ProfibusDP . . . . . . . . . . . . . . . . .33

29.4.11 UNIGATE fieldbus gateway for ProfibusDP V. 4.7 5
Deutschmann Automation GmbH & Co. KG
11.2 Configuration of the UNIGATE RS . . . . . . . . . . . . . . . . . . . . 33
11.3 Configuration of the UNIGATE SC . . . . . . . . . . . . . . . . . . . . 33
11.3.1 Profibus . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
11.3.2 RS232/RS485/RS422 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
11.4 Connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
11.4.1 Connector to the external device (RS-interface) . . . . . . . . . . . . . . . . 35
11.4.2 ProfibusDP connector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
11.4.3 Power supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
11.4.4 Shield terminal lead . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
11.5 LEDs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
11.5.1 LED “Bus Error“ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
11.5.2 LED “Bus Power“ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
11.5.3 LED “Bus State“ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
11.5.4 LED “Power“. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
11.5.5 LED “State“ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
11.5.6 LEDs “Error No. / Select ID“ at UNIGATE RS. . . . . . . . . . . . . . . . . . 37
11.6 Switches . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
11.6.1 Rotary coding switch (Profibus ID) . . . . . . . . . . . . . . . . . . . . . . . 37
11.6.2 Slide switch Termination Profibus . . . . . . . . . . . . . . . . . . . . . . . . 38
11.6.3 Rotary coding switches S4 + S5 (RS485 ID) . . . . . . . . . . . . . . . . . . 38
11.6.4 Slide switch (RS485/RS232 interface) . . . . . . . . . . . . . . . . . . . . . 38
11.6.5 Slide switch (RS485/RS422 termination) . . . . . . . . . . . . . . . . . . . . 38
11.7 Special features of the Debug version . . . . . . . . . . . . . . . . . . 38
11.8 The Debug cable for UNIGATE SC . . . . . . . . . . . . . . . . . . . . 38
12 Error handling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
12.1 Error handling at UNIGATE RS . . . . . . . . . . . . . . . . . . . . . . 39
12.2 Error handling at UNIGATE SC . . . . . . . . . . . . . . . . . . . . . . 39
13 Housing variations . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
13.1 Main operational fields for housings . . . . . . . . . . . . . . . . . . . 41
13.2 Mounting instruction . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
14 Installation guidelines. . . . . . . . . . . . . . . . . . . . . . . . . . 43
14.1 Installation of the module . . . . . . . . . . . . . . . . . . . . . . . . . 43
14.1.1 Mounting. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
14.1.2 Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
14.2 Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
14.2.1 Connection systems. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
14.2.2 ProfibusDP communication interface . . . . . . . . . . . . . . . . . . . . . . 44
14.2.2.1 Bus line with copper cable . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
14.2.3 Power supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
14.2.4 Shield connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
14.2.5 Equipotential bonding connection . . . . . . . . . . . . . . . . . . . . . . . . 44
14.2.6 Line routing, shield and measures to combat interference voltage . . . . . . . 44
14.2.6.1 General information on line routing . . . . . . . . . . . . . . . . . . . . . . . . . . 44
14.2.6.2 Shielding of lines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
15 ProfibusDP. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
15.1 Desription of the DPV1-/DPV2-functions . . . . . . . . . . . . . . . . . 47

Deutschmann Automation GmbH & Co. KG
6 UNIGATE fieldbus gateway for ProfibusDP V. 4.7 29.4.11
15.1.1 DPV1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .47
15.1.2 DPV2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .47
15.2 Representation of the data in ProfibusDP . . . . . . . . . . . . . . . . 47
15.2.1 Configuration telegram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .48
15.2.2 Configuration telegram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .48
15.2.3 Diagnosis . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .48
15.2.4 Diagnosis in DPV1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .50
15.3 Data exchange . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51
16 Technical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52
16.1 Device data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52
16.1.1 Interface data. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .54
16.2 Housing data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55
17 Commissioning guide . . . . . . . . . . . . . . . . . . . . . . . . . . 56
17.1 Note . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56
17.2 Components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56
17.3 Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56
17.4 Dimensional drawing DIN-rail mounting . . . . . . . . . . . . . . . . . 56
17.5 Commissioning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56
17.6 Setting the Profibus address . . . . . . . . . . . . . . . . . . . . . . . 56
17.7 Profibus connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57
17.8 Connection to the process device . . . . . . . . . . . . . . . . . . . . . 57
17.9 Connecting the supply voltage . . . . . . . . . . . . . . . . . . . . . . 57
17.10 Shield connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57
17.11 Project planning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57
17.12 Literature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57
18 Servicing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58
18.1 Returning a device . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58
18.2 Downloading PC software and GSD files etc. . . . . . . . . . . . . . . 58
19 Annex . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59
19.1 Explanations of the abbreviations . . . . . . . . . . . . . . . . . . . . . 59
19.2 Hexadecimal table . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60
20 Drilling templates. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61
20.1 Aluminium housing . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61
20.2 High-grade steel housing . . . . . . . . . . . . . . . . . . . . . . . . . 62
20.3 Polycarbonate housing . . . . . . . . . . . . . . . . . . . . . . . . . . 63
21 Declaration of conformity and certificates . . . . . . . . . . . . . . . 64
21.1 EG Certificate of conformance . . . . . . . . . . . . . . . . . . . . . . 64
21.2 Certificate Germanischer Lloyd . . . . . . . . . . . . . . . . . . . . . . 65

29.4.11 UNIGATE fieldbus gateway for ProfibusDP V. 4.7 7
Deutschmann Automation GmbH & Co. KG
Disclaimer of liability
We have checked the contents of the document for conformity with the hardware and software
described. Nevertheless, we are unable to preclude the possibility of deviations so that we are
unable to assume warranty for full compliance. The information given in the publication is,
however, reviewed regularly. Necessary amendments are incorporated in the following editions.
We would be pleased to receive any improvement proposals which you may have.
Copyright
Copyright (C) Deutschmann Automation GmbH & Co. KG 1997 – 2011. All rights reserved.
This document may not be passed on nor duplicated, nor may its contents be used or disclosed
unless expressly permitted. Violations of this clause will necessarily lead to compensation in
damages. All rights reserved, in particular rights of granting of patents or registration of
utility-model patents.
Art.-No.: V2381E

Information on CE marking of the module Deutschmann Automation GmbH & Co. KG
8 UNIGATE fieldbus gateway for ProfibusDP V. 4.7 29.4.11
1 Information on CE marking of the module
1.1 EU Directive EMC
The following applies to the module described in this User Manual:
Products which bear the CE mark comply with the requirements of EU Directive „Electromagnetic
Compatibility“ and the harmonized European Standards (EN) listed therein.
The EU Declarations of Conformity are available at the following location for perusal by the
responsible authorities in accordance with the EU Directive, Article 10:
Deutschmann Automation GmbH & Co. KG, Carl-Zeiss-Straße 8, 65520 Bad Camberg, Germany
1.2 Scope of application
1.3 Note installation guidelines
The module complies with the requirements if you
1. comply with the installation guidelines described in the User Manual when installing and oper-
ating the module.
2. also follow the rules below on installation of the equipment and on working on switch cabinets.
1.4 Installation of the unit
Modules must be installed in electrical equipment rooms/areas or in enclosed housings (e.g.
switch boxes made of metal or plastic). Moreover, you must earth the unit and the switch box
(metal box) or at least the DIN-rail (plastic box) onto which the module has been snapped.
1.5 Working on switch cabinets
In order to protect the modules against static electrical discharge, the personnel must discharge
themselves electrostatically before opening switch cabinets or switch boxes.
The modules are designed for use in the industrial sector and comply with the following
requirements.
Scope of application Requirement applicable to
Emitted interference Interference immunity
Industry EN 55011 Kl. A EN 61000-6-2

29.4.11 UNIGATE fieldbus gateway for ProfibusDP V. 4.7 9
Deutschmann Automation GmbH & Co. KG Information for the machine manufacturers
2 Information for the machine manufacturers
2.1 Introduction
The UNIGATE module does not constitute a machine as defined by the EU "Machinery“
Directive. Consequently, the module does not have a Declaration of Conformity in relation to the
EU Machinery Directive .
2.2 EU Machinery Directive
The EU Machinery Directive stipulates the requirements applicable to a machine. The term
"machine" is taken to mean a totality of connected parts or fixtures (see also EN 292-1, Para-
graph 3.1)
The module is a part of the electrical equipment of the machine and must thus be included by the
machine manufacturer in the Declaration of Conformity process.

Introduction Deutschmann Automation GmbH & Co. KG
10 UNIGATE fieldbus gateway for ProfibusDP V. 4.7 29.4.11
3 Introduction
The UNIGATE RS232/RS485-ProfibusDP or the SC232/SC485-ProfibusDP module serves to
adapt a serial port to the ProfibusDP to EN 50 170. In this application, it functions as a gateway
and operates as the ProfibusDP Slave. It can be operated by any standard-compliant Master.
At the UNIGATE RS232/485 various transmission protocols are supported at the serial port:
•MODBUS-RTU
•The 3964R protocol popular in Siemens equipment
•Monitoring on the basis of character delay time
•Start / End character
•Constant data lengths (Transparent mode)
•Customized protocols
These protocol variants will probably support most applications.
The module RS or SC essentially consists of the following hardware components:
•Electrically isolated RS485 interface to the ProfibusDP
•Profibus ASIC
•Microprocessor 89C51RD2
•RAM and EPROM
•Optionally electrically isolated
•Serial interface (RS232 and RS485) to the device connected externally
Please note: This instruction manual is valid for UNIGATE RS (standard
gateway with implemented protocols) and also for UNIGATE SC (gateway
capable for scripts).
The information given in this instruction manual is about the UNIGATE
RS and the UNIGATE SC as well, unless differences are explicitly pointed
out.

29.4.11 UNIGATE fieldbus gateway for ProfibusDP V. 4.7 11
Deutschmann Automation GmbH & Co. KG Introduction
3.1 UNIGATE RS software flow-chart
The following graph shows a typical application flow of a UNIGATE fieldbus-module.
j
Testmode
Switch = EE
?
Start test msg
Testmode
n
j
Konfigmode
Switch = FF
?
Start konfig msg
Read/write konfig data
n
HW Reset
Init
RAM test
Fieldbus ASIC test
Test
Debugmode
Debugmode
Appl.
j
n

Introduction Deutschmann Automation GmbH & Co. KG
12 UNIGATE fieldbus gateway for ProfibusDP V. 4.7 29.4.11
3.2 UNIGATE SC software flow chart

29.4.11 UNIGATE fieldbus gateway for ProfibusDP V. 4.7 13
Deutschmann Automation GmbH & Co. KG Introduction
3.3 UNIGATE block diagram
The following picture shows a typical UNIGATE-module design.
3.4 UNIGATE application diagram
The following graph shows a typical connection scheme.

Operation modes of the gateway Deutschmann Automation GmbH & Co. KG
14 UNIGATE fieldbus gateway for ProfibusDP V. 4.7 29.4.11
4 Operation modes of the gateway
4.1 Configuration mode (config mode)
The configuration mode serves to configure the gateway. Adjustments at the gateway’s configu-
ration are only possible in this mode. The gateway will be starting in this mode in case both
switches S4 as well as S5 are set on position "F" when switching on the gateway and also
RS232 is to be selected as interface. Right after switching on the gateway in the configuration
mode it will be sending its starting message, that looks analog with the following message:
"RS-PB c(dA) switch=0x0000 Prot=0x00 SN=20790120".
In the configuration mode the gateway always operates with the settings 9600 Bauds, no Parity,
8 Databits and 1 Stopbit, the RS-State LED will always be flashing red, the "Error No/Select ID"
LEDs are of no account for the user. All software revisions contain the configuration mode.
Connection cable from the gateway to the PC
The cable is supposed to look as follows
Connection table 5pin screw-plug connector - PC
4.2 Test mode
Setting of the test mode
The test mode is set by bringing the switches S4 and S5 in position "E". Beyond it the interface
switch has to be set on "232". All other switches will not be taken into consideration for the set-
ting of the test mode. Now the gateway has to be restarted with these settings (by a short discon-
nection from the power supply).
The test mode is contained from software revision V3.0 on. The test mode may be helpful to inte-
grate the gateway in the relevant environment, for instance to "see" permanent changing data of
the fieldbus in the SPS or also in order to test the parameters of the RS-interface.
Screw-plug-connector Name D-Sub plug-connector Name
Pin 3 Rx Pin 3 Tx
Pin 4 Tx Pin 2 Rx
Pin 5 GND Pin 5 GND

29.4.11 UNIGATE fieldbus gateway for ProfibusDP V. 4.7 15
Deutschmann Automation GmbH & Co. KG Operation modes of the gateway
Mode of operation of the test mode
After the restart in the test mode the gateway will be sending the values 0-15 in hexadecimal rep-
resentation ("0".."F") in ASCII-coding with the current settings for the Baud rate, Parity, Start-,
Data-, and Stopbits on the serial side every second. Simultaneously the same values are issued
binary on the fieldbus-interface provided that this is possible on the fieldbus at the moment (In
case the fieldbus has a data width of more than 1 byte, all characters of the fieldbus will be set to
the current test character).
In this mode the State-LED on the RS-side will be flashing red, the "Error No/Select ID" LEDs will
be displaying the value in a binary way, that is issued that moment. Additionally each character
that is received at one of the interfaces will also be output at the same interface as a local echo.
On the fielbus-side only the first byte will be used for the local echo, that means on receiving as
well as on transmitting only the first byte of the bus data is looked at, the other bus data do not
change compared to the last data.
4.3 Data exchange mode
The gateway has to be in the data exchange mode, so that a data exchange between the
RS-side of the gateway and the fieldbus is possible. As long as the gateway is not in the configu-
ration mode or the test mode, the data exchange mode is active. In the data exchange mode the
gateway will carry out the set protocol with those parameters preset through WINGATE.

RS-interface Deutschmann Automation GmbH & Co. KG
16 UNIGATE fieldbus gateway for ProfibusDP V. 4.7 29.4.11
5 RS-interface
5.1 Framing Check - only for UNIGATE RS
The length of the stop bit received by the gateway is checked through the function "Framing
Check" from the software V 3.0 on. Here the stop bit generated by the gateway is always long
enough, so that connected participants can evaluate the stop bit.
Please be aware that the function "Framing Check" becomes effective only in case of 8 data bit
and the setting "No parity".
An error is detected and indicated by the Error LEDs in case the stop bit does not show the
length 1 bit during the activated check.
The possible settings for this parameter are "enabled" and "disabled". The presetting for the
"Stop Bit Framing Check" is "enabled".
5.2 RS-interface at the UNIGATE SC
On principle the hardware cannot be distinguished from the standard gateway. In addition to the
regular hardware, a special hardware version is available, which however, is only required for the
generation of a script. Due to technical reasons this advanced hardware is not available for all
buses; a development can be made on another than the target hardware though.
Compared to the standard gateway, this development gateway is equipped with an extra-inter-
face RS232, which however, is only available to the outside at the version with 9-pole D-SUB.
This debug-interface itself is always operated with 9600 baud, no parity, 8 data bits and 1 stop
bit. Apart from that there are no further differences, neither in the software nor in the hardware.
5.3 Buffer size at the UNIGATE SC
From V. 5.6 on the UNIGATE SC-ProfibusDP features at the serial side a buffer with the size of
1024 bytes for input data and output data each.

29.4.11 UNIGATE fieldbus gateway for ProfibusDP V. 4.7 17
Deutschmann Automation GmbH & Co. KG Mode of operation of the system
6 Mode of operation of the system
6.1 General explanation
Communication can be split into seven layers, Layer 1 to Layer 7, in accordance with the
ISO/OSI model.
The Deutschmann Automation gateways convert Layers 1 and 2 of the customized bus system
(RS485 / RS232) to the corresponding fieldbus system. Layers 3 to 6 are blank, and Layer 7 is
forwarded transparently on the RS-standard gateways. However, customized adaptations are
also possible here (e.g. adaptations to existing profiles of the fieldbus systems).
The gateway can be configured through the software WINGATE®that is also supplied (see also
chapter 11.2).
6.2 Interfaces
The gateway features the RS232 and RS485 interfaces. Switchover is performed by means of a
slide switch accessible for the customer. The Profibus gateway thus allows access to all devices
connected to the RS485 bus via one single Profibus address resp. access to the device con-
nected to the RS232 interface.
6.3 Data exchange
The Profibus Master sends the output data cyclically to the gateway. The data received from the
Master is sent in the gateway to the external device in accordance with the selected protocol.
The external device responds in accordance with the protocol conventions.
The data received from the external device is written by the gateway into the internal RAM of the
SPC3. The updated data is then transferred on the next poll cycle with the gateway.
At the UNIGATE RS the data exchange via the RS interface can be programmed as follows:
•Cyclic
•Only if input data changes
•Only if trigger byte changes
All data is transferred consistently by the gateway in both directions. The maximum data length
of consistent data must be noted in the case of data exchange between Master and CPU. This is
generally dependent on the Master interface connection and the CPU used.
Structure of the data:
Trigger byte and length byte are contained only if configured accordingly.
At UNIGATE SC all data that is transfered in dependence on the downloaded Script.
6.4 Possible data lengths
The table below shows the maximum transferable data:
Trigger byte See "The trigger byte - only at UNIGATE RS", Chapter 6.6‚ on page 18
Length byte See "The length byte - only at UNIGATE RS", Chapter 6.7‚ on page 18
User data
Input data max. 244 bytes Variable: maximum value in this case
Output data max. 244 bytes Variable: maximum value in this case
Parameters 8 bytes No user parameters
Configuration data max. 16 bytes Dependent on configuration
Diagnosis max. 8 bytes 1 user diagnostic bit = error code

Mode of operation of the system Deutschmann Automation GmbH & Co. KG
18 UNIGATE fieldbus gateway for ProfibusDP V. 4.7 29.4.11
6.5 Run-up phase
The Master programs and configures the gateway in the run-up phase. Data exchange with the
external device does not occur until after the run-up phase has been completed with no errors.
6.6 The trigger byte - only at UNIGATE RS
Since the data is always transferred cyclically on Profibus, the gateway must detect when the
user wishes to send new data via the serial interface. This is normally done by the gateway com-
paring the data to be transferred via the Profibus with the old data stored internally (data
exchange on change). In many cases however, this cannot be used as the criterion, e.g. when-
ever the same data is to be sent. For this reason, the user can set control of transmission via a
trigger byte. In this mode, the gateway always sends (and only sends) when the trigger byte is
changed.
Accordingly, the application program in the control in Normal mode cannot detect whether the
gateway has received several identical telegrams. If Trigger-Byte mode is activated, the gateway
increments the trigger byte each time a telegram has been received.
The first byte in the Profibus input/output data buffer is used as the trigger byte if this mode is
activated.
6.7 The length byte - only at UNIGATE RS
The user can configure whether the transmit length is also to be stored as a byte in the input/out-
put data area. In transmit direction, as many bytes as specified in this byte are sent. On reception
of a telegram, the gateway enters the number of characters received.

29.4.11 UNIGATE fieldbus gateway for ProfibusDP V. 4.7 19
Deutschmann Automation GmbH & Co. KG Transparent mode - only at UNIGATE RS
7 Transparent mode - only at UNIGATE RS
The data is transferred transparently with no timeout monitoring functions whatsoever. The user
presets the data on the Master. This data is then forwarded to the external device with no timeout
monitoring functions whatsoever. A response from the external device is also forwarded to the
Master with no changes. Any security mechanisms must be encrypted by the user in the net
data.

Character-Delay-Time mode - only at UNIGATE RS Deutschmann Automation GmbH & Co. KG
20 UNIGATE fieldbus gateway for ProfibusDP V. 4.7 29.4.11
8 Character-Delay-Time mode - only at UNIGATE RS
The ’Character-delay-time mode’ is not a protocol but a special variant of the “Universal 232“ pro-
tocol’ (see corresponding chapter).
8.1 Receive direction
Data received is entered in the transmit buffer until the character delay time expires after recep-
tion of the last character. This time can be configured.
Transmit direction: The data is transmitted transparently.