Microgate REI2, Руководство пользователя

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REI2
User manual
Doc: R2U_2_1079_002_E
Version: 1.07.9
Page
29
of
64
13.4. LinkPod system
For details of the connection modes of the LinkPod system, see appendix ‘
C
’.
13.5. Computer
REI2 has two separate connection ports, individually configurable, for dialogue with electronic
processors. The standard supported is RS 232. Although contacts for hardware flow control are
present, in this kernel version these are not managed. Instead, an Xon/Xoff software control is
implemented using the suspension and resumption commands (for details, see appendix
D
).
Fig. 12 shows an example of connection between REI2 and two different processors.
13.6. Displayboards
Fig. 13 and Fig. 14 are examples of the connection of one or more Microgate μ TAB master
displayboards to REI2. The first displayboard is connected to the
‘Displayboard’
output of the
stopwatch, the second, and any others used, to the
‘Serial 2’
port of the first displayboard. For
further details about displayboard connection modes, consult the relative manual.
On the
‘Displayboard’
connector the output to the displayboards is available both in the standard
RS232, the one typically used for connection of Microtab displayboards, and in RS485, preferred
for connection to MicroGraph displayboards.
As default values, the RS232 output has 1200 bps, 8 bits of data, 1 stop no parity.
Although a computer can be connected to this output to intercept data sent to the displayboards and
to maintain compatibility with software already written, it should be remembered that the data
displayed is limited to what is necesary for the functioning of the displayboards and the output
cannot be configured.
13.7. REI2 net
This port is reserved EXCLUSIVELY for the connection of other Microgate devices (e.g. REI2),
using the respective REI2 NET ports and the dedicated Microgate cables cod. CAB091.
13.8. Analogue I/O
This connector allows you to connect external data acquisition devices to one of the 3
analogue/digital 13-bit converters inside REI2. Typical of these instruments is the
μ Clima sensor
for measuring air temperature and humidity and snow temperature. The voltage range accepted is
from 0 to 5 volts.The reading frequency can be programmed via software and the value has been
arrived at through the carefully calculated average of 66 repeated readings.
13.9. Digital I/O
5 digital signals are available on this connector. 4 of them are configurable, individually via the
software, at the input or output, and in the case of one signal, only at the output. The output level is
0 volts for the value 0 and 5 volts for the value 1, while the input value is between 0 and 2 volts for
the value 0 and between 3 and 5 volts for the value 1.
The signal light Microgate
μ SEM can be connected to this port.