Manual BG41/BG42/BG43 Contents
Rev. 99/49 i
Contents
1 INTRODUCTION...........................................................................................................1-1
1.1 Safety and handling precautions for the user....................................................1-1
1.1.1 Handling electrostatically sensitive modules ....................................................1-1
1.1.2 Shipping electrostatically sensitive modules ....................................................1-2
1.1.3 Tests and modifications to electrostatically sensitive modules.........................1-2
1.2 General ..................................................................................................................1-3
1.3 Area of employment..............................................................................................1-3
1.4 Deliverable interface building blocks..................................................................1-4
2 INTERFACE BUILDING BLOCKS................................................................................2-1
2.1 Principle of data transmission.............................................................................2-1
2.2 Building block structure.......................................................................................2-2
2.2.1 Building block BG41.........................................................................................2-2
2.2.2 Building block BG42.........................................................................................2-4
2.2.3 Building block BG43.........................................................................................2-6
2.3 Allocation of the backplane connector...............................................................2-8
2.3.1 Backplane connector X1 ..................................................................................2-8
2.3.2 Backplane connector X2 ..................................................................................2-8
2.4 Block diagram of firmware...................................................................................2-9
2.5 Firmware’s memory distribution .........................................................................2-9
3 INTERFACE MODULES ...............................................................................................3-1
3.1 General ..................................................................................................................3-1
3.1.1 Voltage supply 5V and 24V..............................................................................3-1
3.1.2 LED indicators on the modules ........................................................................3-2
3.1.3 Selection table: function - module - function blocks .........................................3-3
3.2 Functional description and allocation of terminal pins.....................................3-4
3.2.1 20mA current loop-modul (MD25)....................................................................3-4
3.2.2 RS232C module (MD22)..................................................................................3-9
3.2.3 20mA current loop/RS232C combination module (MD26) .............................3-12
3.2.4 RS422/RS485 module (MD21).......................................................................3-14
3.2.5 RS422P (MD33) and RS485P (MD34) module floating .................................3-20
3.2.6 CENTRONICS module (MD24)......................................................................3-22
3.2.7 SSI module (MD39)........................................................................................3-24
3.2.8 Counter module (MD18,19)............................................................................3-33
3.2.9 Analogue input (MD40-44) and output module (MD45-49) ...........................3-47
3.2.10 DCF77 antenna module (MD36)..................................................................3-74
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