Ahlborn ALMEMO 204, Operating Instructions Manual

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5. Introduction
5. INTRODUCTION
The ALMEMO ® 204 is a new member in our family of unique measuring devices
- all equipped with Ahlborn's patented ALMEMO ® plug system. The intelligent
ALMEMO
®
plug system - successfully tried and tested for over 20 years - offers
decisive advantages when connecting sensors and peripherals; since all param-
eters are stored in an EEPROM located on the connector itself, there is no need
to repeat programming. Any sensor or output module can be connected to any
ALMEMO
® measuring instrument - all in the same way.
Intelligent digital ALMEMO ® sensors of the new D7 generation operating in con-
junction with our V7 measuring instruments overcome any lingering limitations
that may previously have affected the system - with the one exception that they
will not function on old V6 devices. These sensors, irrespective of the device's
quantities and ranges, operate as an autonomous measuring system with up to
10 channels covering completely new measurable variables, with all relevant
control functions, calculation functions, or compensation values, and ranges up
to 8 digits in size and at speeds of up to 1000 measuring operations per second
(mops). What is so special about this new generation is that, thanks to individ-
ual sampling rates, both quick and slower but high-resolution variables can now
very easily be measured and recorded together. Individual sensor functions can
be parametrized via a menu stored in the plug itself. To facilitate identification
the quantity abbreviations and units have been extended to 6 digits and channel
designation to 20 characters. This device has been specially conceived and de-
signed for digital sensors only. It can only be used therefore with digital stan-
dard sensors (DIGI, Freq, Inp) and with all new D6 and D7 sensors. What is
completely new on V7 devices is the channel numbering system. Sensors and
sockets are counted from 0 to 9; this is followed, after a decimal point, by the
channels, likewise counted from 0 to 9; i.e. the first sensor has channels 0.0 to
0.9, the second has 1.0 to 1.9, etc.
Programming and functioning are virtually identical for all units. The following
points apply to all devices in the ALMEMO
® measuring system; these are de-
scribed in detail in the ALMEMO ® Manual which is included in delivery with
each device:
- Detailed explanation of the ALMEMO
® system (Man., Chapt. 1)
- Overview of the device functions and measuring ranges (Man., Chapt. 2)
- Basic principles, operating instructions, and technical data for all sensors
(Man., Chapt. 3)
- Options for connecting your own existing sensors (Man., Chapt. 4)
- All analog and digital output modules (Man., Section 5.1)
- Interface modules RS232, USB, Ethernet, optic fiber (Man., Section 5.2)
- The whole ALMEMO
® networking system (Man., Section 5.3)
- All functions and their operation via the interface (Man., Chapt. 6)
10 ALMEMO ® 204