Akytec MV210-221, Руководство пользователя

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5 Construction and operation
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akytec GmbH - Vahrenwalder Str. 269 A - 30179 Hannover - Germany Tel.: +49 (0) 511 16 59 672–0 - www.akytec.de
LED LED Status Function
Lights 200 ms once every 3
seconds It is necessary to replace the
battery of RTC
Lights 100 ms twice a second
(after a pause of 400 ms) Module is in the safe state
900 ms on, 100 ms off Hardware peripheral failure
(Flash, RTC, Ethernet Switch)
Input status indicators (red/
green) Green Input is closed
OFF Input is open
Red (for DI AC inputs) Phase loss or incorrect phase
rotation in a three-phase
network
Under the module faceplate there are terminal blocks and a service button ( Figure 4.1 ).
The service button performs the following functions:
– Factory settings restore (
Section 6.5 );
– IP address assignment ( Section 6.2 );
– Firmware update ( Section 6.4 )
5.3 Real time clock
The Module has a built-in real time clock (RTC). Its source of power is a battery.
The timing is in seconds, starting with January 1, 2000 at midnight UTC. RTC indication is used for
writing entries into the log file.
5.4 Log file
The module has built-in encrypted flash memory. The encryption algorithm is Data Encryption
Standard (DES) in cipher block chaining (CBC) mode. The key is the string
superkey . An
initialization vector is generated using a hash function. The function argument is the password
specified in akYtecToolPro. A checksum is calculated by the CRC32 algorithm and saved in the file
end. The checksum is also encrypted.
Log file of Module will be saved as a few files. The log interval, the restriction on the size of one file
and their number is set by the user in akYtecToolPro. If the log file is full, then the data is overwritten,
starting with the oldest data in the oldest file.
A log file is a collection of records. Entries are separated by line break characters (0x0A0D). Each
entry corresponds to one parameter and consists of fields separated by the “;” character (without
quotes). Entry format is shown in table.
Table 5.2 Entry format
Parameter
Type
Size Comment
Time stamp binary
data 4 bytes
In seconds from 00:00 01.01.2000 (UTC+0)
Separator string 1 byte Character ";" (without quotes)
Unique identifier of
the parameter
(UID) string 8 byte As a string of HEX characters with leading
zeros
Separator
string 1 byte
Character ";" (without quotes)
Parameter value string depending on
the parameter
As a string of HEX characters with leading
zeros
Separator
string 1 byte
Character ";" (without quotes)