Opibs Option; Brief Description Of The Interbus Master Interface; Software; Modified Rwmos.elf Operating System Software - Addi-Data APCI-8001 Option Manual

34

2 OPIBS option

2.1 Brief description of the INTERBUS master interface

The OPIBS option is used to extend the APCI-8001 system with the aid of internationally standardised
INTERBUS field bus technology. The APCI-8001 motherboard can be fitted with a special component
mounting of few additional components for the Interbus field bus master. Thus, a cost-effective and flexible
connection to additional process peripheries is possible. Serial bus technology presents significant
advantages compared with the conventional parallel wiring, in particular for spatially distributed systems or a
very large number of I/O points.
OPBIS is an INTERBUS master interface based on the IBS UART master protocol chips by
Phoenix Contact. OPIBS is triggered via a "socket driver" integrated in the rwmos.elf operating program and
provides the user with essential functions for controlling the INTERBUS and exchanging process data. In
addition to the E/A data, the driver provides a basic system administration and basis diagnosis.
The scope of delivery includes the fwsetup.exe set-up and diagnosis programme, which is used to simplify
the integration of a PCAP or SAP application programme created by the user.
At present, the rwmos.elf operating system software supports up to 512 Interbus subscribers and a
maximum of 4096 I/O points. This means that the APCI-8001 can easily be fitted with new E/A functions. A
large number of different field bus devices are available on the market, sometimes even with intelligent pre-
processing functions.

2.2 Software

The OPIBS can be planned and programmed using the standard TOOLSET software for the APCI-8001 (as
of revision V2.50j). The corresponding additional functions are described in the following sections, in addition
to the description in the programming and referencing manual [PM].
2.2.1

Modified rwmos.elf operating system software

Specific rwmos.elf operating system software is required before the additional functions of the OPIBS can be
used. This software is part of the scope of delivery of the OPIBS option and is not accounted for separately.
The Interbus option can be used with the aid of PCAP programming and SAP programming. The example
programmes included in the scope of delivery represent the simple handling of these access methods.
2.2.2

Introduction

Below, a short overview is given of the methods with which the OPIBS option can be operated, in terms of
software. To configure the specified INTERBUS structure as flexibly and quickly as possible, the following
was undertaken:
The user initially defines a bus structure with all the necessary field bus devices. The current bus structure of
the Interbus that is connected to the APCI-8001/OPIBS is automatically determined using the fwsetup.exe
configuration programme included in the scope of delivery. The read configuration can be saved as an ASCII
file or as a binary file for control and documentation purposes. It also includes further important information
for SAP programming.
The binary file in which the setpoint state is saved can be used for a comparison with the actual bus
configuration. In this case, it is ensured that a changed bus structure cannot be activated in the final
application.
O
PTIONS MANUAL