Metro DataVac Mux4 User manual

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RUE DE LA JONCHERE web www.metro-fr.com
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M
Mu ux x4 4 / / M Mu ux x8 8
User’s manual

Mux4 / Mux8
BEFORE USING THE MULTIPLEXER, PLEASE READ THE SAFETY RULES IN THE
APPENDIX B VERY CAREFULLY
1. WARNING
The information contained in this document can be modified without notice.
The manufacturer does not give any guarantee regarding the guarantees for commercial quality of
this material or for its ability to fit to a particular use.
The manufacturer is not responsible for the eventual errors to be found in this manual and is also
not responsible for the direct or indirect damage resulting from the equipment, from the
performances and from the use of this product.
We did our best to write a most precise possible manual. However, if you find any error in this
guide, please feel free to contact the company Metro.
2. CLEANING
Use a soft cotton cloth slightly soaked with an ethyl alcohol based product.
DO NOT USE the following products: acetone, benzene, toluene and halogen hydrocarbons.
3. PRESENTATION
The Mux2,4,8 multiplexer for instruments enables the communication between 1 to 8 instruments
and a computer or a similar device equipped with a USB type interface
The computer can so make the data acquisition from the different instruments.
The instruments with Digimatic connectivity (Mitutoyo, Mahr) such as those having an « Opto RS
duplex » interface can be connected equally.
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Mux4 / Mux8
4. CONTENTS OF THE BOX
CD with the
drivers to be
installed
USB cable for
connection to the
PC
Multiplexer
5. BASIC TECHNICAL DATA
1 USB port for connection to a computer and power supply
1 external release input (pedal or contact)
1 Reset button
1 blue LED by channel
Storage temperature : - 40 °C to + 70 °C
Operating temperature : 0 °C to + 45 °C
Max relative humidity : 80 %
Reset button
Footswitch
USB Port
Mux4 Mux8
Mitutoyo or Opto RS duplex inputs 4 8
Dimensions: width, height, depth in mm 104*28 *60 1856*28*60
Weight 165 g 235 g
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Mux4 / Mux8
6. INSTALLATION
Please follow the following procedure before using your Mux 4 or 8:
1- Launch the file « driver USB.exe » located on the directory « Driver USB » that is on the
CD. The installation is automatic.
2- Connect your Mux 4 or 8 onto your computer with the USB cable.The following message
appears on windows :
3- A COM PORT (USB SERIAL PORT) appears in the Device Manager window (Control
pannel System Device Manager Ports (COM & LPT)
It is now possible to write the COM port number. This could be useful for configuring your
acquisition software.
4- Your Mux 4 or 8 is now ready to operate
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Mux4 / Mux8
7. THE USB PORT
Data are transmitted according to the following format:
9600 baud, 8 data bits, no parity, 1 stop bit
Checking messages on the USB port
Under mentioned ‘n’ can take the values 2, 4, 8, according to the Mux channel number.
The messages received on the RS232 port are filtered:
Only the following characters are allowed: @ Esc * L D N 1 to n ? R T S CR LF
Only the characters 1 to n @ and Esc are allowed as 1st character of a message.
A message must end with a LF character (except interrogations 1 to n in multiplexed mode).
Each received character releases a delay time (of 0.07 second); the next character must
arrive before the end of this delay time (the messages can so not be captured manually); a
LF character cancels this delay time.
If these criteria are not respected, the message being received is cancelled and the reception
buffer is emptied.
8. STATUS MESSAGE
A special message enables to detect the presence of the multiplexer (switched off, badly
connected or disconnected) and to get its serial number.
Commands: @*?CRLFor Esc*?CRLF
The multiplexer is answering with « Mnyyyyyyúvx.xxCRLF » : Mnyyyyyy = serial number on 9
characters, ú = space, vx.xx = program version on 5 characters
Two different modes are available to operate the Mux 4 or 8 multiplexer:
The multiplexed mode. This mode is selected when device is powered up. Mux scan inputs
and transmits the value of an instrument as soon as the operator uses the « transfer » key of
this instrument.
The addressed mode. As soon as it receives a correct addressing instruction on the USB
port, the multiplexer selects the corresponding instrument input. The Mux is then in
multiplexed mode. Only the selected instrument can send or receive data.
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Mux4 / Mux8
Page 6
9. MULTIPLEXED MODE
This mode is selected when device is powered up.
The multiplexed mode allows direct transmission from an instrument.
Mux scan inputs and transmits the value of an instrument as soon as the operator uses the
« transfer » key of this instrument.
The values are transmitted according to the following format:
Vx:#uuuu#ttt#seeeee.dddddd CRLF
x Gives the instrument number.
# Space
uuuu Unit : mm, inch, IN, rps, m/s, etc.. (#### if unit not transmitted)
ttt Tolerance : GO#, +NG, -NG, ABS, REL, MIN, MAX, etc.. or ###
s Sign of the read value
eeeee 5 figures: whole part preceded by 0s if necessary
. Decimal point
dddddd 6 figures: decimal part followed by 0s if necessary
CRLFCR(ASCII 0D) + LF(ASCII 0A) end the transmission
Exemple : the value -1.25 on channel 2 can be transmitted as follows:
V2:#mm#######-00001.250000CRLF
Transmission request to an instrument:
Command ‘1’ to ‘4’ (Mux4) or ‘1’ to ‘8’ (Mux8) (ASCII character 31h to 38h, without CRLF) receives
on Mux USB port, triggers reading of the corresponding instrument, and then transmit the value.
10. ADRESSED MODE
In addressed mode, only one channel (the addressed one) can communicate. The Mux foot switch
can be used.
As soon as it receives a correct addressing instruction on the USB port, the multiplexer selects the
corresponding instrument input. It is then working in addressed mode.
Channel selection command
This command is setting up the connection to an instrument. This connection will remain valid until
the reception of a new configuration. The Mux4 does not reply anything to this command.
Command format:
Character @ or Esc *NxCR LF
Decimal 64 or 27 42 78 49 to 56 13 10
Hexadecimal 40 or 1B 2A 4E 31 to 38 0D 0A
The x character represents the number of the selected input, i.e. 1 to 4 (Mux4) or 1 to 8 (Mux8).

Instrument reading command
This command causes the previously selected instrument reading and then the transmission of the
value to the USB port.
Command format:
Character @ or Esc *LDCR LF
Decimal 64 or 27 42 76 68 13 10
Hexadecimal 40 or 1B 2A 4C 44 0D 0A
When an instrument has been selected, the transmission of its value can also be triggered through
the external trigger input (foot switch) or with the instrument « transfer » key.
Values are transmitted according to the format described chapter 8
Error messages
When a requested reading is impossible, an error message is transmitted according to the
following format :Nxy:ExCRLF Error code : E1= communication ; E3= reading
11. GOING BACK TO THE MULTIPLEXED MODE
This command reset the Mux in the multiplexed mode (as when it is switched on).
The Mux does not answer this command.
Commands: @*RCRLFor Esc*RCRLF
12. APPENDIX A
ONE YEAR LIMITED GUARANTEE FOR Mux2, 4, 8 PARTS
MANUFACTURER'S RESPONSIBILITY
SPARE PARTS AND LABOUR.
The manufacturer commits himself to pay for repair or replacement costs (labour costs included)
during a period of one year as from the date the guarantee came into force. The spare parts can
be new or renovated and are guaranteed until the end of the initial guarantee period.
FIRST END-USER COVERAGE.
This guarantee applies only to the first end-user of the product and is not assignable to any other
subsequent purchaser or user.
RESTRICTIONS.
Any accessory or expansion item not included in the original factory packaging is not guaranteed.
The present guarantee does not cover: installation or repair costs, damages resulting from
circumstances beyond the manufacturer's control like damages following acts of God, misuse, or
careless mistake from the user, damages during the transport or due to a wrong installation, use or
application, such as any material damage caused by the use of non supplied products,
components or accessories. It also does not cover products modified without any written approval

Mux4 / Mux8
from the manufacturer, including electrical or mechanical modification, removal of serial numbers
or of the manufacturer's trademarks or of any other identification.
THE SOLE RECOURSE UNDER THIS GUARANTEE SHALL BE THE REPAIR OR THE
REPLACEMENT OF DEFECTIVE PARTS AS INDICATED ABOVE. UNDER NO
CIRCUMSTANCES THE MANUFACTURER CAN BE HELD LIABLE FOR INDIRECT OR
SPECIAL DAMAGES OR FOR DAMAGES RESULTING FROM THE USE OF THE PRODUCT,
INCLUDING ANY LOSS OF DATA, BUSINESS OR PROFIT, AND WHETHER THESE
DAMAGES CAN BE FORESEEN OR NOT AND WHETER THEY ARE BASED ON A
GUARANTEE VIOLATION OR NOT.
THE PRESENT GUARANTEE REPLACES ANY OTHER EXPRESSED OR IMPLIED
GUARANTEE INCLUDING BUT NOT LIMITED TO ANY GUARANTEE OF MARKETING OR
ADEQUACY FOR A PARTICULAR USE; AND ALL THESE GUARANTEES ARE EXPRESSLY
EXCLUDED AND CANCELLED.
13. APPENDIX B
TECHNICAL SERVICE.
If the product is defective, bring it back to an authorised dealer.
Any modification or any change done without any manufacturer's approval can invalidate the right
to use the equipment.
This device comply with the safety standards EN 61010-1 and the electromagnetic compatibility
EN55022 class B, CEI 801-2 (level II), CEI 801-3 (level III), CEI 801-4 (level III).
FCC
NOTE: This equipment has been tested and found to comply with the limits for a Class A digital
device, pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable
protection against harmful interference when the equipment is operated in a commercial
environment. This equipment generates, uses, and can radiate radio frequency energy and, if not
installed and used in accordance with the instruction manual, may cause harmful interference to
radio communications. Operation of this equipment in a residential area is likely to cause harmful
interference in which case the user will be required to correct the interference at his own expense.
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