Paradise Datacom 4 RU Chassis, Руководство по эксплуатации

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88 201627 REV X 4 RU SSPA Chassis Operations Manual
Byte position Byte Value (Hex) Description
1 0xAA Frame Sync 1
2 0x55 Frame Sync 2
3 Destination Address -//-
4 Source Address -//-
5 Protocol Version Protocol compatibility hole, must be set to 0
6 Request ID Service Byte
7 Command 0, Set Request; 1, Get Request
8 Data Tag
0, System Settings; 1, System Thresholds; 2, Temp. Sensor
Settings; 3, Conditions; 4, ADC Data; 5, Raw NVRAM/RAM
Data
9 Data Address Setting number, Sensor command, EEPROM address
10 Data Length Total length of the data, valid values 1-30
11+N Data Actual Data
11+N+1 Checksum
Dest. A Source A Protocol V Re-
quest ID + C Data Tag + Data A Data
Data
Table 7-4: Request Frame Structure
Byte position Byte Value (Hex) Description
1 0xAA Frame Sync 1
2 0x55 Frame Sync 2
3 Destination Address -//-
4 Source Address -//-
5 Protocol Version Protocol compatibility hole, must be set to 0
6 Request ID Service Byte
7 Command 2, Set Response; 3, Get Response
8 Data Tag
0, System Settings; 1, System Thresholds; 2, Temp. Sensor
Settings; 3, Conditions; 4, ADC Data; 5, Raw NVRAM/RAM
Data
9 Error Status
0, No Errors; 1, Too Big; 2, No Such Data; 3, Bad Value; 4,
Read Only; 5, Bad Checksum; 6, Unrecognized Error
10 Data Length Total length of the data, valid values 1-30
11+N Data Actual Data
11+N+1 Checksum
Dest. A Source A Protocol V Re-
quest ID + C Data Tag + Data A Data
Data
Table 7-5: Response Frame Structure