PPC905AE101 3BHE014070R0101 3BHE014071P201 module

This document describes about hardware specifications of Analog I/O Modules (for FIO) to be installed in the ESB bus node units (ANB10S and ANB10D), Optical ESB bus node units (ANB11S and ANB11D), ER bus node units (ANR10S and ANR10D) (*1), and field control units (for FIO) (AFV30S, AFV30D, AFV40S, AFV40D, AFV10S, AFV10D, AFF50S, and AFF50D). These analog I/O modules function as signal converters; by inputting field analog signals into these modules, it converts them to internal data for field control stations (FCS), or the FCS’s internal data to analog signals for outputs.The analog I/O module (with HART communication function) connected to a transmitter or a valve positioner receives HART variable (*1) in addition to exchange analog input/output data by 4 – 20 mA signal with field control stations (FCS). There are 8 types of analog I/O modules (with HART communication function).

Communication with HART Devices 

The analog I/O modules (with HART communication function) communicate with field devices and store analog data and HART variables in the Input/Output image area in the communication module. An FCS refers to and sets the Input/Output image by accessing the analog I/O modules (with HART communication function). The FCS utilizes the field device data via I/O terminals of the function block in the same way as other analog/digital I/O signals.

HART Communication Functional Specifications

 The analog I/O modules (with HART communication function) are equipped with HART modems and eable HART communication (*1) by directly connecting the HART devices to he modules. No. of HART devices: Max. 16 devices/module HART variables: Max. 32 points/module HART variables can be treated as ordinary process input data via %Z terminal connection. It is just for input. HART multidrop connection (*2): Max. 5 devices/channel HART variables data refresh cycle time : 1 second/device (When maximum of 16 devices are connected, it is 17 seconds per ESB bus connection and 19 seconds for ER bus connection.) Analog data refresh cycle time (*3): The number of ER bus node unit determines the analog data refresh cycle time in between the ER bus master interface module (EB401) and ER bus node units. With HART communication, it takes twice as much time than without HART comunication.