IBA ibaFOB-TDC Interface Card for SIMATIC TDC

Introduction

Assignment

The ibaFOB-TDC card couples the iba Process Data Acquisition system ibaPDA or the

Soft-PLC ibaLogic with the Siemens control system SIMATIC TDC. To achieve this, the

ibaFOB-TDC must be connected to one of the free ports of the CP52IO (GDM Interface

Module of the SIMATIC TDC).

All component parameters are 100% controlled by software. No wiring or jumpering is

necessary for that card.

Characteristics

The card has the following characteristics:

 Bi-directional fiber optic link with 640 MBit/s

 Absolutely noise free acquisition of process data

 Enhanced SIMATIC TDC system diagnostics

 Up to 4 ibaFOB-TDC cards per PC

 Display for card id, processor and link status via 7-segment display and LEDs

 Plug and Play installation

Operational modes

The following operational modes are supported by ibaFOB-TDC:

 ibaPDA-lite-SD-TDC software interface: Max. 4 cards with up to 512 analog plus

512 digital values are supported by this software (16 telegrams with 32 analog

and 32 digital values each);

Supports a non structured so called ASCII Techno string via the TDC link.

 ibaPDA-Request-TDC package: Max. 4 cards with up to 50 processor connec

tions (32 analog plus 32 digital signals each) and a total of up to 1024 analog

plus 1024 digital signals for one ibaPDA;

Supports one non structured so called ASCII Technostring via the TDC link.

 Bi-directional SD/TDC-Lite connection for the ibaLogic Soft-PLC: Max. 4 cards

with up to 512 analog plus 512 digital input values and 256 analog plus 256 digi

tal values; Supports the non structured so called ASCII Technostring via the TDC

link

Remarks concerning SIMATIC TDC

The coupling partner on the SIMATIC TDC side is the Interfacemodul CP52IO. This

card is located in a slot of the Global Data Memory (GDM) Rack, the common commu

nication memory within a multirack SIMATIC TDC system. The fiber optic connection

(FO) may use any free port of any CP52IO.

The CP52IO realizes the access to the GDM memory card CP52M0. The TDC racks

are connected to the CP52IO via the CP52A0 card. The ibaPDA PC with his ibaFOB

TDC card acts like a SIMATIC TDC rack with a CP52A0.

This topology enables the ibaFOB-TDC to communicate notionally with every proces

sor in one of the connected racks (max. 43). This would be up to more than 800 CPUs.

In reality the amount of simultaneous accessible CPUs per ibaFOB-TDC is

limited to 50.

In large systems it makes sense, to equip the ibaPDA-system with several ibaFOB

TDC cards, connected parallel to one GDM.

It is also possible to access one GDM by multiple ibaPDA systems. In this case it is

mandatory to use unique link names for the different ibaPDA systems. It is also re

quired that one TDC CPU is accessed by only one ibaPDA system.

Remarks on the measurement principle

To measure SIMATIC TDC system numeric values must be transported between the

TDC system and the PC, which means that internal variables of the TDC system may

be visualized and recorded. For recording purposes two different software packages

are provided by iba.

Request-TDC (former name Symbolic Request):

The definition of the signals to be measured is independent of the connected system.

All changes are done in ibaPDA. ibaPDA supports the functionality to select the internal

TDC variables by their names, i.e. the plan, function block and the connector names.

To do that for every TDC CPU 2 service function blocks must be included in the CFC

plan of the TDC system. These function blocks support also overload protection to

avoid high system loads by ibaPDA.

The information about the variable names (address book) is not provided by the TDC

engineering software, but is transferred from the TDC CPU to the ibaPDA system di

rectly via the ibaFOB-TDC card.