Akytec MV210-221, Руководство пользователя

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5 Construction and operation
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Function Error name Possible causes
MODBUS_SLAVE_
DEVICE_FAILURE
– requested file is missing;
– requested file is read-only;
– failed to write the required number
of bytes
5.6 Operation modes of digital inputs
5.6.1 Operation modes of the inputs of a "dry contact" type
The group of inputs DI1-DI6 of the module performs the determination of the logical level.
For each input, the counter of incoming pulses is used.
NOTE
By default, counters are always on. Counters on inputs with additional modes are enabled
only if the additional mode at the input is disabled.
Table 5.10 Pulse counter parameters
Parameter Value
Capacity 32 bit
Maximum input frequency 400 Hz
Debounce
On/Off: Configurable in the akYtec Tool Pro
Debounce time
25 ms (not configurable)
CAUTION
To work with signals with a frequency of more than 40 Hz at a duty cycle of 0.5 or less, do not
turn on the debounce, since the useful signal will be considered as bounce and skipped.
If the counter is full, the corresponding register is automatically reset. The sequence of actions for
forced counter resetting is given in
Section 6.7 .
NOTICE
Counters are non-volatile, their values are saved after a reboot. Counters on inputs with
additional modes after reboot are reset.
The state values of the digital inputs are stored as a bitmask and read from the corresponding
register.
5.6.2 Modes of inputs with 230 AC signals
The groups of inputs A1-A3, B1-B3 and C1-C3 of the Module are designed for connecting signals of
alternating voltage with a level from 20 V
rms
to 264 V
rms
and a frequency from 47 to 63 Hz. Such an
input level will be recognized as a logical 1.
Various circuits of both single-phase and three-phase networks can be connected to the discrete
inputs.
Table 5.11 Input functions
Function Description
When connecting a single-phase network
Determination of the presence or absence of
voltage in the network The state values of the digital inputs are stored
as a bitmask and read from the corresponding
register.
Operating time (hours) 1) For each of the inputs, a 32-bit counter is used,
in which the operating time is recorded in
seconds
Voltage switch counter 1) For each of the inputs a 32-bit voltage switch
counter is used.