meM-LOG-SE
© BMC Messsysteme GmbH
Page 5
Pin 12 features all functions of the device button (see chapter 4). That means if you connect pin 12 to ground, a scan
will be started. In this case, the pin must be short-circuited for more than 0.5sec and less than 4sec.
•
The digital input and output channels are protected with 1k
Ω
resistors. If the input voltage is not within the
admitted voltage range of 0V..5V, the device may be damaged.
•
The signals of digital input channels are "hidden" among the analog measuring values, so that always at
least one analog input channel must be saved!
•
To prevent any damages of the device, ensure that no voltages are connected to pin 12!
3.3 Connection to the PC
If connecting
meM-LOG-SE
to a PC, it can be controlled via programming and measuring data stored in the logger
memory can be read out. The connection is possible either via USB interface or via the serial interface RS232.
Interface
Description
USB:
-
fast transmission of measuring data
-
to be used with operating systems Windows
®
2000/XP/Vista
serial (RS232):
-
universal use on all operating systems supporting the serial interface, e. g. all Windows
®
operating sys-
tems, Linux and Mac OS
-
transmission over great distances, connection of a modem
3.3.1
Serial connection (RS232)
The serial connection requires a 9-pole, cross-wired null modem cable, not electrically isolated, which is connected to
the two 9-pole Sub-D plugs of the logger and the PC (to be ordered under:
ZUKA-SER9
). The serial connection of the
logger is located at the back of the device. If your PC only provides a 25-pole serial connection, you need an adapter 9-
pole to 25-pole in addition. The pin assignment of the 9-pole Sub-D plug for the serial interface is listed in the table
below:
Pin (Sub-D9)
meM-LOG-SE
2 RX
3 TX
5 GND
(Ground)
•
Programming of the meM-LOG-SE can only be done via the serial interface!
•
Serial commands and data can only be sent between logger and PC if the transmission rates (baudrate) of
the RS232 interface and the meM-LOG-SE are the same.
3.3.2 USB
If using the USB interface, connect the included USB cable
ZUKA-USB
to the USB connections both at PC and meas-
uring system. The socket for the USB interface is located at the front of the logger.
3.4 Power supply connection
The device is supplied with power via the 3-pole DIN plug at the back of the
device. The input voltage must be in the range of 9..45V DC.
External power supply is also required if using the USB interface of the
PC!
Optionally available as accessory is the power supply
ZU-PW10W
(12V,
12W).
5
4
3
2
1
9
8
7
6
GND
TX
RX
