bmcm meM-INC User manual

meM-INC
USB miniature external Measurement System
Features Applications
•connection of up to 3 incremental encoders (max. 32kHz) •measuring lengths, rotation angles, positions,
•counting function (max. 64kHz) movements, quantities and frequencies
•frequency measurement (max. 64kHz) •perfect for mobile use
•external counter reset (optional)
•32kHz incremental pulse frequency (else: 64kHz)
•electrical isolation
•connection via USB-interface
Page 1
With the creation of the modern
generation of PCs less and less
internal slots are available for
additional cards.
That means that extension cards,
like measuring cards, which have
been integrated into the PC before,
now must be connected externally.
Here the external devices of the
meM-series (e.g. meM-INC) pro-
vide an alternative choice to sub-
stitute the measuring cards integra-
ted in the computer. Realized as
... USB-solution ...
it can be easily be connected to the
USB-interface of the PC.
meM-INC can be used with the
operation systems Windows®
2000/XP. As soon as it is connec-
ted the system automatically re-
gistrates the new device and asks
to install a suitable hardware
driver.
Of course the meM device also
shows all the typical USB features
such as hot-pluggable (devices can
be plugged in during operation),
up to 127 devices can be used,
Plug&Play and power supply via
USB interface.
meM-INC in particular provides
for
... 3 electrically isolated
incremental encoder inputs ...
which are led out via a 37-pole
Sub-D socket. There incremental
encoders with a
... pulse frequency of
up to 32kHz ...
are connectable. meM-INC can be
used together with the most vari-
ous incremental encoders.
To ensure that each pulse is re-
gistered, the incremental encoder
should transmit 64000 pulses per
second at the maximum.
An additional option is the exter-
nal counter reset for the incremen-
tal encoders with the settings acti-
ve-high, active-low or disabled.
Not just counting pulses are mea-
sured by meM-INC, it can also
measure frequencies or count up
and down.
Included as accessory is a USB
driver and the hardware indepen-
dent ActiveX control LibadX for
programming under Windows®
2000/XP.
In addition the meM-INC can be
used under Windows®2000/XP
together with our powerful soft-
ware for acquisition and proces-
sing of measuring data
... NextView®4 ... .
It is available as "Professional",
"Lite" or "Client/Server" version.
The free version NextView®4
Live! is included with delivery.
With NextView®4 Live! the
entire functional range of the
meM-INC can be tested.
For further information and soft-
ware updates please visit our ho-
mepage at:
http://www.bmcm.de

meM-INC
© BMC Messsysteme GmbH Page 2
1 Start-up procedure
Plug the red frames onto the short sides of the device with the feet looking downwards, as can be seen in the product
picture. Connect one end of the USB-cable to the device and the other to the USB-interface of the PC. The device is
supplied with power via the USB-connection.
2 Connection of incremental encoders
The meM-INC provides for 3 electrically isolated incremental encoder
channels (low: 0V..1V; high: 5V..30V). These can be reached at the 37-
pole Sub-D socket at the back of the device. For each incremental en-
coder there are lines for signal A, signal B and optionally the external
counter reset.
For further information about connecting your incremental encoder,
please refer to the relevant documentation of your product.
Pin (Sub-D37) Inkremental Encoder No. / Connection
9(+), 28(-)
10(+), 29(-)
11(+), 30(-)
1 / signal A, counter input
1 / signal B, counting direction
1 / reset function
12(+), 31(-)
13(+), 32(-)
14(+), 33(-)
2 / signal A, counter input
2 / signal B, counting direction
2 / reset function
15(+), 34(-)
16(+), 35(-)
17(+), 36(-)
3 / signal A, counter input
3 / signal B, counting direction
3 / reset function
•A high level of 30V may damage the meM-INC. To ensure that each pulse is registered please do not exceed
the maximum pulse frequency of up to 32kHz.
•The optocoupler inputs are low-ohmic, for high input voltages the input current optionally may be limited
by a serial resistor (12V: max. R=820Ω; 24V: max. R=2,2kΩ).
3 Integrated functions
3.1 Number of counting pulses
meM-INC counts the number of incoming pulses measured at the connection of signal A. If the maximum counting
range is reached the counter is reset to 0. If the external counter reset is connected, the counter can be reset at any time.
Avoid any toggling of the encoder outputs while the incremental encoders stand still, as it leads to measuring errors!
3.2 Counting direction
The counter of the meM-INC can count up or down. This depends on the status of the connection for signal B (pin 10,
13, 16). If it is low, the counting pulses arriving at signal A are counted upwards. If signal B is high, the device counts
downwards. Not connected inputs are constantly low so that in this case the counter goes upwards.
3.3 Frequency measurement
In frequency measurement 3 gates - a time interval in which the number of counting pulses is measured - are provided:
0.1sec, 1sec, 10sec. Please note, that the higher the gates, the more exact the received frequency value will be, but on
the other hand calculation will take more time, as the values are provided not before the end of the gate.

meM-INC
© BMC Messsysteme GmbH Page 3
4 Software installation
All the software for Windows®2000/XP and documentation available for the meM-INC is integrated on the
"Software Collection"-CD included with delivery. When inserting the CD a CD starter opens automatically
(otherwise: start setup.exe).
meM-INC
Change to the product page of the meM-INC by selecting the entry "Products" in the CD starter and then
the device ("meM-INC") listed under the interface "USB".
For detailed information about installing or operating the software please see the corresponding manuals. To
open the documentation in PDF format the Adobe Acrobat Reader is required.
You can run any installation directly from CD. If your browser prevents this first save the setup pro-
gram to hard disc before running it separately afterwards.
Software Software product Notes Documentation
Device driver BMCM-DR
(driver package) 1. install driver package to hard disc 2. Windows®Plug&Play installation BMCM-DR-IG (driver installation manual)
Programming STR-LIBADX ActiveX control for hardware independent pro-
gramming STR-LIBADX-IG (installation / programming manual)
STR-LIBADX-EX example programs for LIBADX ActiveX control -
STR-meM easy-to-use ActiveX controls for programming
with Visual Basic®, Delphi®, Visual C++™STR-meM-IG
(installation / programming manual)
STR-meM-EX example programs for STR-meM ActiveX controls -
Operating
program NV4-LIVE free online version of NextView®4 for testing the
functional range of the hardware
NV4 measuring software NextView®4 (requires license
number, no freeware!)
NV4-SERV
NV4-WORK Client/Server version of NV4 consisting of Next-
View®4 Server and NextView®4 Workstation
NV4-IG (installation Stand-alone version)
IG-NV4-CS (inst. Client/Server version)
NV4-UM (user manual)
"First steps" in the NextView®4 demo pro-
ject (displayed at first start of the software)
4.1 Driver installation
For meM-INC a driver installation is always required. Only then additional software can be installed. To
make sure that the installation is done correctly, follow the instructions in the order as described below.
4.1.1. Install driver package
The prior installation of the bmcm driver package BMCM-DR to the hard disc of your PC makes the driver search for
Windows®much easier. Especially in case of driver updates only the new driver package has to be installed, the hard-
ware automatically uses the new version. The link to install the driver package is located on the meM-INC product
page of the "Software Collection"-CD.
4.1.2. Plug&Play installation
As soon as the meM-INC is connected to the PC, the system announces the new hardware. Start the automatic hard-
ware detection by selecting the following option:
-Windows®XP: "Install the software automatically" (SP2: do not connect with Windows®Update!)
-Windows®2000: "Search for a suitable driver for my device"
As the driver package has been installed on hard disc before no additional location needs to be entered for the driver
search under Windows®2000.
4.1.3. Check installation
In the Windows®Device Manager the entry "Data Acquisition (BMC Messsysteme GmbH)" is included after success-
ful installation displaying the installed bmcm hardware. To open the Device Manager proceed as follows:
-Windows®XP: Start / Control Panel / System / TAB "Hardware" / button "Device Manager"
-Windows®2000: Start / Settings / Control Panel / System / TAB "Hardware" / button "Device Manager"

meM-INC
© BMC Messsysteme GmbH Page 4
Double click the meM-INC to open its properties. For general information, any existing device conflicts and possible
sources of error see TAB "General".
4.2 Programming
Programming the meM-INC with Visual Basic®, Delphi®, Visual C++™is possible with the hardware independent
LibadX ActiveX control. It is available in the section "Programming" of the "Software Collection"-CD. After installati-
on the ActiveX control must be loaded into the respective programming environment.
-Visual Basic®: menu "Project / Components", entry "LIBADX Object Library 4.0"
-Delphi®: menu "Components / Import ActiveX", entry "LIBADX Object Library 4.0"
The easy-to-use, product specific ActiveX controls STR-meM are located on the on the meM-INC product
page of the "Software Collection"-CD. Checkmark "meM-ActiveX Control module" to load the device into
the programming environment.
If you select the entry STR-LIBADX-EX or STR-meM-EX, listed directly under the installation program of the cor-
responding ActiveX control, you can install example programs (incl. source code) demonstrating how to apply the
ActiveX control.
4.3 Using the meM-INC with NextView®4
Install the "Live!" version of the professional software NextView®4 for measurement data acquisition and
processing to test the features and functions of the meM-INC directly. The setup program NV4-LIVE is
available in the section "NextView®4.2". Select your measuring system (meM-INC) by pressing the button
"Add" in the dialog "Device Setup" of the installation program.
When you open the software you will get first instructions about how to operate the program. For detailed information
an online help is provided.
With NextView®4 Live! signals cannot be stored. The full version NextView®4 is no freeware and
requires a license number!

meM-INC
© BMC Messsysteme GmbH Page 5
5 Important notes for using the meM-INC
•The device is only suitable for extra-low voltages – please observe the relevant regulations!
•For reasons relating to EMC, the device must only be operated with housing closed. ESD voltages at open lines may
cause malfunction during operation.
•For cleaning use water and mild detergent only. The device is designed to be maintenance-free.
•At the 37-pole Sub-D socket signal cables are connected – use shielded cables only. For best possible interference
suppression connect shield at one end only. Close open inputs if necessary.
•The device ground and the chassis are electrically connected to the chassis of the PC, which is usually also connec-
ted to ground. Be sure to avoid ground loops, since they will cause measuring errors!
•PCs (notebooks), which are not grounded often produce high potentials to earth at the USB socket, so that safe
operation cannot be guaranteed. In this case connect the measuring system to earth.
•Avoid toggling of the encoder outputs while the incremental encoders stand still, as it leads to measuring errors!
•The device must not be used for safety-relevant tasks. With the use of the product the customer becomes manufactu-
rer by law and is therefore fully responsible for the proper installation and use of the product. In the case of impro-
per use and/or unauthorized interference our warranty ceases and any warranty claim is excluded.
Do not dispose of the product in the domestic waste or at any waste collection places. It has to be either duly
disposed according to the WEEE directive or can be returned to bmcm at your own expense.
6 Technical data meM-INC (typical at 20°C and 5V supply)
•Digital input channels
Digital channels: 3 electrically isolated incremental encoder inputs
Incremental encoders: up to 3 incremental encoders connectable
Input voltage range: low: 0V..1V; high: 5V..15V (with external series resistor max. R=2.2kΩ: 5V..30V)
Input resistance: Rin=390Ω
pulse / frequency measurement incremental encoder
with input voltage 5V: 20kHz 10kHz
with input voltage 12V-30V: 64kHz 32kHz
Counter range per incremental encoder: 0..4294967295, then the counter is reset to 0
Max. pulse frequency: incremental: 32kHz; counting, frequency measurements: 64kHz
Counter reset: for incremental encoders adjustable (active-low, active-high, disabled)
Frequency accuracy*(reg. real time): max. ±100ppm
Frequency drift: max. ±50ppm/°C
*The values for accuracy always relate to the respective measuring range. Errors might add at worst.
•General data
Power supply: +4.5V..+5.5V from USB connection to the PC, max. 100mA
Digital connections: all channels at a 37-pole Sub-D socket at the back of the device
USB interface: USB 1.1 compatible (full speed)
CE standards: EN61000-6-1, EN61000-6-3, EN61010-1; for decl. of conformity (PDF) visit www.bmcm.de
ElektroG // ear registration: RoHS and WEEE compliant // WEEE Reg.-No. DE75472248
Max. perm. potentials: 60V DC acc. to VDE, max. 1kV ESD on open lines
Protection type: IP50
Size: aluminum housing: 167 x 113 x 30 mm3
Temperature range: -25°C..+70°C
Relative humidity: 0-90% (not condensing)
Delivery: device with aluminum housing, 1m USB-connecting cable, "Software-Collection"-CD, description
Available accessories: DIN rail set ZU-SCHI, USB extension cable ZUKA-USB, connecting cables ZUKA37SB, ZUKA37SS,
connector boards ZU37BB/-CB/-CO, 37-pole Sub-D plugs ZU37ST
Guarantee: 2 years with effect from sales date, damages at product resulting from improper use excluded
•Software support
Software on CD (included): ActiveX Controls LibadX (hardware independent) and STR-meM for programming under
Windows®2000/XP; measuring program NextView®4 Live! for testing and operating the hardware
NextView®4 (optional): professional software (versions: Professional, Lite, Client/Server) for the acquisition and analysis of
measurement data under Windows®2000/XP
Manufacturer: BMC Messsysteme GmbH. Subject to change due to technical improvements. Errors and printing errors excepted. Rev. 3.3 11/04/2006