Data Fields | |
struct modConfData_t | config |
The system's Modbus configuration (copy of as of time of request) | |
uint8_t | dataModel |
Data model for in and / or out data. | |
uint8_t | errorCode |
Error code. | |
uint8_t | fcFlag |
The outstanding function to perform. | |
uint16_t | gotLen |
The complete length of the incoming Modbus request (telegram) | |
uint8_t * | inData |
Incoming data (pointer to) | |
uint8_t | inDataByteCnt |
The length of the request's incoming data as byte count. | |
ucnt16_t | inDatTarg |
The (logic) start or target address for the request's incoming data. | |
uint8_t * | outData |
Outgoing data (pointer to) | |
uint8_t | outDataByteCnt |
The length of the responses outgoing data as byte count. | |
ucnt16_t | outDatSou |
The (logic) start or source address for the response's outgoing data. | |
uint8_t | pollCnt |
Poll count. | |
pt_t | pt |
The (raw) protothread data structure for the user modThr_data_t thread. | |
struct modTelegr_t | reqModTelegr |
A copy of (the start of the) incoming request. | |
uint8_t | retC |
The return code of the last schedule. | |
ucnt32_t | wrkV |
Working variables for the Modbus handling threads. |
The organisational data for a Modbus handler thread.
The similarity of structure of modThr_data_t data and those for cliThr_data_t CLI is not by chance.
uint8_t fcFlag |
The outstanding function to perform.
It is an accepted function code (FC) or 0. 0 is used as no code or nothing to do. That appointment is consistent with thr_data_t .flag usage.
uint8_t retC |
The return code of the last schedule.
This is intended to hold the return code, that is the Modbus handler function's last return value.
struct modConfData_t config |
The system's Modbus configuration (copy of as of time of request)
uint8_t pollCnt |
Poll count.
Value 0 means first stint for handler function / tread; i.e. new data. Value 1 means second stint or first connection poll, and so on.
uint8_t dataModel |
Data model for in and / or out data.
The values provided are Discrete inputs, Coil, Coils, Input registers, Mask single Holding and Holding registers. It will be set according to function code before the user / application Modbus handler is called.
uint8_t errorCode |
Error code.
To be set (!=0) by the handler if the requested function cannot be performed.
The (logic) start or target address for the request's incoming data.
This value will be provided in correct byte order.
uint8_t* inData |
Incoming data (pointer to)
This pointer is only valid if .inDatlen is not 0 and only in the first stint of a handling protothread function. For the type and interpretation of the data see primarily the function code.
uint8_t outDataByteCnt |
The length of the responses outgoing data as byte count.
This field is set to expected value. It may be shortened by the handler thread / function if that decides to deliver less data that requested.
The (logic) start or source address for the response's outgoing data.
This value will be provided in correct byte order.
uint8_t* outData |
Outgoing data (pointer to)
This pointer is only valid if .outDataBytCnt is not 0 and only in the last stint of a handling protothread function.
Working variables for the Modbus handling threads.
This must be set according to the bytes copied to .outData (in the last stint) if any.