Helmholz SSW7-USB User manual

SSW7-USB
USB Adapter for MPI Bus
700-755-1VK21
User Manual
Version: 2 / 2005-02-03
Order number of manual: 900-755-1VK21/en
Systeme Helmholz GmbH zHannberger Weg 2 zD-91091 Großenseebach
Phone: [phone] zFax: [phone] zE-Mail: [e-mail] zInternet: www.helmholz.de

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model or design.
Copyright ©2009 by
Systeme Helmholz GmbH
Hannberger Weg 2, 91091 Grossenseebach, Germany
Note:
We have checked the content of this manual for conformity with the
hardware and software described. Nevertheless, because deviations
cannot be ruled out, we cannot accept any liability for complete
conformity. The information in this manual is regularly updated.
When using purchased products, please heed the latest version of the
manual, which can be viewed in the Internet at www.helmholz.de,
from where it can also be downloaded.
Our customers are important to us. We are always glad to receive
suggestions for improvement and ideas.
Step and SIMATIC are registered trademarks of SIEMENS

Design
The SSW7-USB permits conversion from a USB interface to the MPI bus (RS485 level,
19.2 or 187.5Kbaud) for programming software or visualization.
The SSW7 has a 1.2m long MPI connecting cable, which can be directly plugged into
the CPU socket of the programmable controller or at any other point in the MPI
network.
The housing of the SSW7-USB contains a type "B" USB socket. The SSW7-USB can be
connected to the PC via the standard USB cable. The SSW7-USB is powered from the
USB bus. The SSW7-USB can therefore be used at any point in the MPI bus.
The connection to the MPI bus can be extended with an additional cable. For that
purpose, Systeme Helmholz GmbH offers the following products:
MPI bus extension cable, 5m 700-751-6VK11
MPI bus extension cable, 10m 700-751-6VK21
MPI bus extension cable, special length 700-751-6SO11
When extending the MPI bus, please follow the relevant configuring guidelines as
defined in the documentation of your PLC.
The SSW7-USB and the extension cables do not contain any terminating
resistors.
i
For the SSW7-USB a DIN rail bracket (700-751-HSH01)
and an S7-300 sectional rail bracket (700-751-PSH00)
are available.
FM35x modules cannot currently be parameterized with the SSW7-USB.
SSW7-USB Page:4

Installation in Windows 2000/XP
To install the SSW7-USB driver, connect the device to your PC via a USB cable. The
SSW7-USB is automatically detected by the operating system.
Answer the question, if you want to connect to the windows update website with
the option “… do not connect to the internet”.
Under Windows XP you can select the "Install software automatically"
option in the first dialog box. Windows XP will then automatically find the
driver on the CD.
i
The operating system now asks for the appropriate hardware driver:
The driver is to be found on the CD supplied.
SSW7-USB Page:5

If the operating system does not request the driver automatically select the path on
the CD manually:
…\driver\Windows 2000XP\SSW7-USB\serwpl.inf
Please confirm the Microsoft warning with “Continue Anyway”:
Then confirm in the following dialog box:
The driver is now installed and the SSW7-USB can be used. This operation is only
necessary the first time you use the SSW7-USB on a PC. The driver will be activated
automatically when you subsequently use the SSW7-USB.
i
No further parameterization of the SSW7-USB driver is required.
SSW7-USB Page:6

After successful installation of the driver, you will find a new COM interface under
"Control Panel / System / Device Manager", which you can now use in your PLC
programming software.
If you plug the SSW7-USB into another USB interface, the SSW7-USB may
appear on another COM interface.
If the operating system does not request a driver the first time you plug in the SSW7-
USB, you may already have an older or similar driver installed on your system. In
that case, unplug the SSW7-USB from the PC and run the program
"DRemover98_2K.EXE" on the diskette. After that, the SSW7-USB should install
normally.
Installing the SSW7-USB driver can impair correct functioning of an existing
RS232-USB converter cable. If you no longer require the SSW7-USB driver,
you can remove it with the "DRemover98_2K.EXE" program.
SSW7-USB Page:7

Parameterization
The SSW7-USB settings are defined in the software used for communication with the
programmable controller. This might be programming software, or the
parameterization software of an operator panel, or the parameterization of a display.
No special parameterization tool for the SSW7-USB is required because the
parameterization of the adapter is automatically transmitted to the adapter every
time the software is used. Parameterization is therefore not stored in the adapter.
If you use programming software, use the driver "PC adapter (MPI)":
SSW7-USB Page:8
The SSW7-USB ignores the set baud rate. Use
of other "PC adapter" drivers is not possible.
If the "PC adapter" driver is not shown in the
menu above, you can have it installed
subsequently with the function "Interfaces:
Add/Remove".
If the SSW7-USB is disconnected from the USB interface, the virtual COM
interface will be removed from the system. If communication is in progress,
this can cause the programming software to block. In that case, it will be
necessary to reboot the computer!
Only ever remove the SSW7-USB from the computer when no software is
running!

SSW7 parameterization software
With the "SSW7 Tool V3", it is possible to preparameterize or update an SSW7-USB
with any computer, even if there is no parameterization software or Step 7 software
installed on that computer.
The "SSW7 Tool V3" can be downloaded from our download area at
www.helmholz.de.
LED displays
The three LEDs on the top of the device provide you with information about the
operating status of the SSW7-USB. You can use them to locate sources of error
quickly.
The LEDs have three different states: Off, on, blinking. If the LED is off, none of the
labeled states apply.
Upper LED off: The adapter has no power or is faulty
Upper LED on: The adapter is being powered and the processor is running
Upper LED blinking: SSW7-USB is in update mode
Center LED on: The SSW7-USB is registered in the MPI network
Center LED blinking: The SSW7-USB is being parameterized
Lower LED on: The SSW7-USB has established a connection
Lower LED blinking: The SSW7-USB is transmitting data
SSW7-USB Page:9

SSW7-USB Page:10
Technical data
Order number SSW7-USB 700-755-1VK21
Dimensions 105 x 53 x 29 mm (LxWxH)
Weight approx. 180g (incl. MPI cable &
connector)
MPI interface
Type: RS485
Transmission rate: 19.2 kbps or 187.5 kbps
Cable: 1.2m
Connection: Connector, SUB D 9-way
Communication interface
Type: USB 1.1
Connector: Type B socket
Power supply
Voltage: DC +5V, from the USB bus
Current consumption: 150mA (max.)
Degree of protection IP 30
Electromagnetic compatibility (EMC)
Interference emission Class B to EN55022
Interf. immunity on signal lines ±2kV acc. to EN61000-4-4
Noise immunity ESD ±6kV contact discharge EN61000-4-2
±8kV air discharge EN61000-4-2
RF radiation fields 10V/m acc. to EN61000-4-3
Conducted RF interference 10V acc. to EN61000-4-6
Climatic conditions
Temperature operation 0° C to +60°C
Temp. storage/transport -20° C to +60°C
Relative humidity operation 5% to 85% at 30°C (no condensation)
Relative humidity storage 5% to 93% at 40°C (no condensation)
Special features
Quality assurance According to ISO 9001:2000
Maintenance Maintenance-free (no battery)

Pin assignment
Pin SUBD connector MPI
1 n.c.
2 M24V
3 DATA.B
4 RTS AS
5 0V (M5V)
6 n.c.
7 +24V
8 DATA.A
9 RTS PG
Cable
MPI extension cable (700-751-6VKx1):
SSW7-USB Page:11