Ge MULTILINK ML2400 Manuel d'utilisateur Page 335

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CHAPTER 18: MODBUS PROTOCOL MODBUS PROTOCOL
MULTILINK ML2400 ETHERNET COMMUNICATIONS SWITCH – INSTRUCTION MANUAL 18–37
18.2.2 Format Codes
Bitmap: 32-bit group of bits, packed into two registers. Encoded in big endian.
F1: 16-bit unsigned integer
F2: Enumeration - power alarm
0 = power supply good
1 = power supply fail
F3: Enumeration - OFF/ON
0 = Off
1 = On
F4: Enumeration: port type
0 = Giga - GBIC
1 = Copper - TP
2 = Fiber - 10
3 = Fiber - 100
4 = Giga - 10/100/1000 (triple speed)
5 = Giga - Copper 1000 TP
6 = Giga - SFP
F9: 32-bit unsigned long
String: A sequence of octets, packed 2 to one register in sequence.
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