英格索蘭空氣壓縮機modbusrs485通訊說明

1、Fieldbus Register Table Created by NodeFileCreator V2.7 (wv) on 08/06/11 at 14:57:05 Software Id {SY1109.00 Software Name Q1SIRCST Software Edition(s) E06 FIELDBUS REGISTER TABLE FORMAT RULES This document lists all of

2、 the available registers for the control unit with the abovementioned software. The registers are described using a fixed format. Below is a detailed explanation of the various elements that describe any given register.

3、Register Name: This is the name of the register, of which there are four basic types. The first three letters of the register name define the register type and or operation that can be performed. The rest of the name sim

4、ply describes which particular bit of data is involved. Type Register type description “Adv”A register which is part of a “broadcast ” message type. This data is transmitted on the Airbus485 network without the need fo

5、r outside influence. The data is sent at a particular interval and/or when the status of Airbus485 compatible system hardware changes. There is no possibility to request ,broadcast? message types.Although there is no abi

6、lity to independently request the ,broadcast? message data type on an Airbus485 network, the gateway providing fieldbus access captures and stores the ,broadcast? data, thereby allowing the fieldbus master to request (re

7、ad) the data elements whenever required. Remark !!: Obtaining data from “Adv” type registers is an efficient way of Just below the “Register Length ” entry there is either a description of the “DATA -TYPE ”, “DATA -CO

8、NVERSION ” or additional comments to describe the structure of the data in more detail. Descriptions of the various “DATA -TYPE ” and “DATA -CONVERSION ” items can be found at the bottom of this document. General terms

9、 used in this document MSB: Most Significant Byte (always the “high order ” byte in a 16 bit word => also the “first ” byte) LSB: Least Significant Byte (always the “l(fā)ow order ” byte in a 16 bit word => also the

10、 “second ” byte) FIELDBUS REGISTER TABLE DATA ACCESS RULES In principle accessing the data within a data block is only possible when using the full data block size. Example: the “GetStatus ” request for a compressor

11、 always produces 3 data words. When requesting the data it is necessary to always request the data as 3 word data block, otherwise the data cannot be read. The only exceptions to th e rule are “broadcast ” (Adv) data b

12、locks (all controller models) and register addresses within the range 4000...5FFF. For those data blocks it is possible to read individual data elements within the data block. Any request for data that falls within th

13、e specified data block range is acceptable. Write operations are only possible using the full data block size !!!Example: a basic sequencer unit broadcast data block which contains 7 individual registers: - Register F02

14、0: AdvAvailableStatus - Register F021: AdvRunningStatus - Register F022: AdvLoadedStatus - Register F023: AdvAlarmStatus - Register F024: AdvSystemStatus - Register F025: AdvTargetPressure - Register F026: AdvSystemPress