目录
[#Protocol ID:](#Protocol ID:)
[#Message Types:](#Message Types:)
[#Header Error Class:](#Header Error Class:)
[#Header Error Codes: (Further refines error)](#Header Error Codes: (Further refines error))
[#Return value of item response](#Return value of item response)
[#Job Request/Ack-Data function codes](#Job Request/Ack-Data function codes)
[#Memory Areas](#Memory Areas)
[#Transport size (variable Type) in Item data](#Transport size (variable Type) in Item data)
[#Variable ddressing mode](#Variable ddressing mode)
[#Transport size in data](#Transport size in data)
[#Block type constants](#Block type constants)
[#Sub block types](#Sub block types)
[#Block security mode](#Block security mode)
[#Block Language](#Block Language)
[#Userdata transmission type](#Userdata transmission type)
[#Userdata last PDU](#Userdata last PDU)
[#Userdata Functions](#Userdata Functions)
[#Variable table type of data](#Variable table type of data)
[#VAT area and length type](#VAT area and length type)
[#Userdata programmer subfunctions](#Userdata programmer subfunctions)
[#Userdata cyclic data subfunctions](#Userdata cyclic data subfunctions)
[#Userdata CPU subfunctions](#Userdata CPU subfunctions)
[#Userdata security subfunctions](#Userdata security subfunctions)
[#Userdata time subfunctions](#Userdata time subfunctions)
[#Flags for LID access](#Flags for LID access)
[#TIA 1200 area names](#TIA 1200 area names)
本主要介绍了S7通信协议中的常量和规定。首先，Protocol ID是用于标识正在使用的协议的字段，其中0x32代表S7协议。接下来，文中提到了各种消息类型，包括Job Request（工作请求）、Ack（确认）、Ack-Data（确认数据）、以及Userdata（用户数据）等。然后，文中又列举了一些错误类别和错误代码，例如Header Error Class和Header Error Codes、Parameter Error Codes等，它们用于指示消息头或参数中可能存在的错误。文中还给出了一些具体的函数代码和内存区域标识符，它们可以在实际应用中进行操作。总的来说，这些常量都是为了使S7通信协议在工业自动化领域中更加规范化、通用化和易于理解而设计的。
#Protocol ID:
0x32 - Protocol ID
#Message Types:
0x01 - Job Request
0x02 - Ack
0x03 - Ack-Data
0x07 - Userdata
#Header Error Class:
0x00 - No error
0x81 - Application relationship error
0x82 - Object definition error
0x83 - No ressources available error
0x84 - Error on service processing
0x85 - Error on supplies
0x87 - Access error
#Header Error Codes: (Further refines error)
#Parameter Error Codes:
0x0000 - No error
0x0110 - Invalid block type number
0x0112 - Invalid parameter
0x011A - PG ressource error
0x011B - PLC ressource error
0x011C - Protocol error
0x011F - User buffer too short
0x0141 - Request error
0x01C0 - Version mismatch
0x01F0 - Not implemented
0x8001 - L7 invalid CPU state
0x8500 - L7 PDU size error
0xD401 - L7 invalid SZL ID
0xD402 - L7 invalid index
0xD403 - L7 DGS Connection already announced
0xD404 - L7 Max user NB
0xD405 - L7 DGS function parameter syntax error
0xD406 - L7 no info
0xD601 - L7 PRT function parameter syntax error
0xD801 - L7 invalid variable address
0xD802 - L7 unknown request
0xD803 - L7 invalid request status
#Return value of item response
0x00 - Reserved
0x01 - Hardware fault
0x03 - Accessing the object not allowed
0x05 - Address out of range
0x06 - Data type not supported
0x07 - Data type inconsistent
0x0a - Object does not exist
0xff - Success
#Job Request/Ack-Data function codes
0x00 - CPU services
0xF0 - Setup communication
0x04 - Read Variable
0x05 - Write Variable
0x1A - Request download
0x1B - Download block
0x1C - Download ended
0x1D - Start upload
0x1E - Upload
0x1F - End upload
0x28 - PLC Control
0x29 - PLC Stop
#Memory Areas
0x03 - System info of S200 family
0x05 - System flags of S200 family
0x06 - Analog inputs of S200 family
0x07 - Analog outputs of S200 family
0x1C - S7 counters (C)
0x1D - S7 timers (T)
0x1E - IEC counters (200 family)
0x1F - IEC timers (200 family)
0x80 - Direct peripheral access (P)
0x81 - Inputs (I)
0x82 - Outputs (Q)
0x83 - Flags (M) (Merker)
0x84 - Data blocks (DB)
0x85 - Instance data blocks (DI)
0x86 - Local data (L)
0x87 - Unknown yet (V)
#Transport size (variable Type) in Item data
0x01 - BIT
0x02 - BYTE
0x03 - CHAR
0x04 - WORD
0x05 - INT
0x06 - DWORD
0x07 - DINT
0x08 - REAL
0x09 - DATE
0x0A - TOD
0x0B - TIME
0x0C - S5TIME
0x0F - DATE AND TIME
0x1C - COUNTER
0x1D - TIMER
0x1E - IEC TIMER
0x1F - IEC COUNTER
0x20 - HS COUNTER
#Variable ddressing mode
0x10 - S7-Any pointer (regular addressing) memory+variable length+offset
0xa2 - Drive-ES-Any seen on Drive ES Starter with routing over S7
0xb2 - S1200/S1500? Symbolic addressing mode
0xb0 - Special DB addressing for S400 (subitem read/write)
#Transport size in data
0x00 - NULL
0x03 - BIT
0x04 - BYTE/WORD/DWORD
0x05 - INTEGER
0x07 - REAL
0x09 - OCTET STRING
#Block type constants
'08' - OB
'0A' - DB
'0B' - SDB
'0C' - FC
'0D' - SFC
'0E' - FB
'0F' - SFB
#Sub block types
0x08 - OB
0x0a - DB
0x0b - SDB
0x0c - FC
0x0d - SFC
0x0e - FB
0x0f - SFB
#Block security mode
0 - None
3 - Kow How Protect
#Block Language
0x00 - Not defined
0x01 - AWL
0x02 - KOP
0x03 - FUP
0x04 - SCL
0x05 - DB
0x06 - GRAPH
0x07 - SDB
0x08 - CPU-DB DB was created from Plc programm (CREAT_DB)
0x11 - SDB (after overall reset) another SDB, don't know what it means, in SDB 1 and SDB 2, uncertain
0x12 - SDB (Routing) another SDB, in SDB 999 and SDB 1000 (routing information), uncertain
0x29 - ENCRYPT block is encrypted (encoded?) with S7-Block-Privacy
#Userdata transmission type
0x0 - Push cyclic data push by the PLC
0x4 - Request by the master
0x8 - Response by the slave
#Userdata last PDU
0x00 - Yes
0x01 - No
#Userdata Functions
0x1 - Programmer commands
0x2 - Cyclic data
0x3 - Block functions
0x4 - CPU functions
0x5 - Security
0x7 - Time functions
#Variable table type of data
0x14 - Request
0x04 - Response
#VAT area and length type
0x01 - MB
0x02 - MW
0x03 - MD
0x11 - IB
0x12 - IW
0x13 - ID
0x21 - QB
0x22 - QW
0x23 - QD
0x31 - PIB
0x32 - PIW
0x33 - PID
0x71 - DBB
0x72 - DBW
0x73 - DBD
0x54 - TIMER
0x64 - COUNTER
#Userdata programmer subfunctions
0x01 - Request diag data (Type 1)
0x02 - VarTab
0x0c - Erase
0x0e - Read diag data
0x0f - Remove diag data
0x10 - Forces
0x13 - Request diag data (Type2)
#Userdata cyclic data subfunctions
0x01 - Memory
0x04 - Unsubscribe
#Userdata block subfunctions
0x01 - List blocks
0x02 - List blocks of type
0x03 - Get block info
#Userdata CPU subfunctions
0x01 - Read SZL
0x02 - Message service
0x03 - Transition to stop
0x0b - Alarm was acknowledged in HMI/SCADA 1
0x0c - Alarm was acknowledged in HMI/SCADA 2
0x11 - PLC is indicating a ALARM message
0x13 - HMI/SCADA initiating ALARM subscription
#Userdata security subfunctions
0x01 - PLC password
#Userdata time subfunctions
0x01 - Read clock
0x02 - Set clock
0x03 - Read clock (following)
0x04 - Set clock
#Flags for LID access
0x2 - Encapsulated LID
0x3 - Encapsulated Index
0x4 - Obtain by LID
0x5 - Obtain by Index
0x6 - Part Start Address
0x7 - Part Length
#TIA 1200 area names
0x8a0e - DB
0x0000 - IQMCT
0x50 - Inputs (I)
0x51 - Outputs (Q)
0x52 - Flags (M)
0x53 - Counter (C)
0x54 - Timer (T)