Siemens SITRANS F Series Operating Instructions Manual page 84

Operating
7.1 Operating instructions
Response
Slave address
Function
Sub-function Hi
Sub-function Lo
Data Hi
Data Lo
:
Data Hi
Data Lo
CRC
Example: Read Return Slave Message Count (address 529)
Query: 1,8,0,14,0,0,129,200
Slave address = 1 (0x01)
Function = 8 (0x08)
Sub-function Hi, Lo = 0, 14 (0x00,0x0E)
Data Hi, Lo = 0, 0 (0x00,0x00)
CRC = 129,200 (0x81, 0xC8)
Sub-function 0x000E = 14 = Read Return Slave Message Count
Response: 1,8,0,14,0,97,64,32
Slave address = 1 (0x01)
Function = 8 (0x08)
Sub-function Hi, Lo = 0, 14 (0x00,0x0E)
Data Hi, Lo = 0, 97 (0x00,0x65)
CRC = 64,32 (0x41, 0xE3)
Read Return Slave Message Count = 0x0065 = 97 message received
84
1 byte
1 byte
1 byte
1 byte
1 byte
1 byte
:
1 byte
1 byte
2 bytes
Operating Instructions, 06/2018, A5E44036384-AA
FC310 (From firmware 4.0)