hopf Elektronik GmbH 6844, Техническое руководство

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COM0 / COM1 S
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120 / 157 System 6844(RC) - V03.00
hopf
Elektronik GmbH
Nottebohmstr. 41
• D-58511 Lüdenscheid • Tel.: +49 (0)2351 9386-86 • Fax: +49 (0)2351 9386-93 • Internet: http://www.hopf.com • E-Mail: info@hopf.com
6.3.14.4 Initialization String for IEC-103 (ASDU Type 6)
This string is sent with ascending IEC address every second unless the minute change. The
IEC address is continuously repeated from 1 to a selectable value of maximal 255 ($00-FF).
Setting up the IEC address is done in
Mode Byte 3 .
Setting the IEC address to "0" disables the initialization string.
Mode Byte 3 for Initialization String IEC-103
B7 B6 B5 B4 B3 B2 B1 B0 DEC HEX Note
0 0 0 0 0 0 0 0 0 $00 Initialization deactivated
0 0 0 0 0 0 0 1 1 $01
0 0 0 0 0 0 1 0 2 $02
0 0 0 0 0 0 1 1 3 $03
: : : : : : : : :
: : : : : : : : :
0 0 0 0 1 1 1 1 15 $0F
0 0 0 1 0 0 0 0 16 $10
0 0 0 1 0 0 0 1 17 $11
: : : : : : : : :
: : : : : : : : :
1 1 1 1 1 1 0 0 252 $FC
1 1 1 1 1 1 0 1 253 $FD
1 1 1 1 1 1 1 0 254 $FE
1 1 1 1 1 1 1 1 255 $FF Maximum Value
Structure IEC-103
Character no. Meaning Hex Value
1 Start flag 10
2 Control field 47
3 IEC-Address 00-FF
4 Checksum (sum of fields 2 & 3 mod 256) 00-FF
5 End flag 16
Example
The length of data string consists of 5 characters. Just binary values are sent.
The hexadecimal values of the transmitted characters are stated:
<10><47> <01> <48><<16> (String initializes unit with the address 01)
<10><47> <02> <49><<16>
:
<10><47> <0F> <56><<16>
<10><47> <10> <57><<16>
:
<10><47> <FE> <45><<16>
<10><47> <FF> <46><<16> (String with maximal valid address)