Specifications

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Chapter 5
AsconMBCommLib
5-1 Purpose
The purpose of this document is to supply a complete description of
AsconMBCommLib Library project.
5-2 Description
AsconMBCommLib is a Function Block library which simplifies the access to the
MODBUS communication ports available in Ascon SpA
sigmadue line devices. The
following is the list of FBs present in the library.
MB_MST_SYNC Modbus Master: Synchronization of operations
MB_MST_RD_COIL Modbus Master: Coil reading
MB_MST_WR_COIL Modbus Master: Coil writing
MB_MST_RD_WORD Modbus Master: Word reading
MB_MST_WR_WORD Modbus Master: Word writing
MB_16WORD_TO_ARRAY Modbus Master: packaging of 16 WORD in an array
MB_ARRAY_TO_16WORD Modbus Master: un-packaging of an array into 16 WORD
MB_MST_RD8_DINT Modbus Master: conversion and management of 8 DINT read values
MB_MST_RD8_DWORD
Modbus Master: conversion and management of 8 DWORD read values
MB_MST_RD8_REAL Modbus Master: conversion and management of 8 REAL read values
MB_MST_RD8_UDINT Modbus Master: conversion and management of 8 UDINT read values
MB_MST_WR8_DINT Modbus Master: conversion and management of 8 DINT write values
MB_MST_WR8_DWORD
Modbus Master: conversion and management of 8 DWORD write values
MB_MST_WR8_REAL Modbus Master: conversion and management of 8 REAL write values
MB_MST_WR8_UDINT
Modbus Master: conversion and management of 8 UDINT write values
MB_SLV_RD8_DWORD Modbus Slave: reading of 8 DWORD values
MB_SLV_RD8_REAL Modbus Slave: reading of 8 REAL values
MB_SLV_RD16_WORD Modbus Slave: reading of 16 WORD values
MB_SLV_RD32_DIGITAL Modbus Slave: reading of 32 digital values
MB_SLV_RD_DIGITAL Modbus Slave: reading of 1 digital value
MB_SLV_RD_DWORD Modbus Slave: reading of 1 DWORD value
MB_SLV_RD_REAL Modbus Slave: reading of 1 REAL value
MB_SLV_RD_WORD Modbus Slave: reading of 1 WORD value
MB_SLV_WR8_DWORD Modbus Slave: writing of 8 DWORD values