CONVERTER RS-232, RS-422, RS-485
OPERATION MANUAL
IOA55-1c August 2009
2
Contents
1. General Characteristics. ................................................................................................ 4
1.1. The View of Device ................................................................................................. 4
1.2. The Intended Use of Device..................................................................................... 4
1.3. Symbol Marking:...................................................................................................... 5
1.4. Examples of Different Uses for the Converter......................................................... 6
2. Connectors and signalling parts .................................................................................... 9
2.1. Connectors.............................................................................................................. 11
2.1.1. TR-55.1 ........................................................................................................ 11
2.1.2. TR-55.2 ........................................................................................................ 12
2.2. Signalling ............................................................................................................... 13
2.3. Configuration ......................................................................................................... 13
3. Functional Description................................................................................................ 15
4. Installation and Maintenance ...................................................................................... 15
4.1. Working Conditions ............................................................................................... 15
4.2. Installation.............................................................................................................. 15
4.3. Bus Termination..................................................................................................... 16
4.4. The Range of Transmission.................................................................................... 16
4.4.1. The Range of Transmission Along the Electrical Path ................................ 16
4.4.2. The Range of Transmission Along the Optical Path.................................... 16
4.5. The Rules of Use of Optical Fibre Connectors ...................................................... 17
4.6. Power Supply ......................................................................................................... 17
5. Technical Specifications ............................................................................................. 17
5.1. Optical Parameters ................................................................................................. 17
5.2 Electrical Parameters of the RS-232, RS-422, RS-485 Interfaces.............................. 18
5.2.1 The RS-232 Interface ................................................................................... 18
5.2.2 The RS-422 and RS-485 Interfaces.............................................................. 18
5.3 Mechanical Parameters .......................................................................................... 18
5.4 Environmental Requirements................................................................................. 18
5.4.1. Operation........................................................................................................... 18
5.4.2 Transport ...................................................................................................... 19
5.5 Electromagnetic Compatibility.................................................................................... 19
5.6 Power Supply............................................................................................................... 19
5.7 Product Components .............................................................................................. 19
List of Figures
Figure 1. The device’s view ....................................................................................................... 4
Figure 2. Front panel view of the TR-55 double-fibre converter with two optical ports........... 9
Figure 3. Front panel view of the TR-55 double-fibre converter with one optical port............. 9
Figure 4. Front panel view of the TR-55 single-fibre converter with two optical ports .......... 10
Figure 5. Front panel view of the TR-55 single-fibre converter with one optical port............ 10
Figure 6. Lower panel view of the TR-55 converter – all versions ......................................... 11
Figure 7. Pin numbering of the RJ-45 connector ..................................................................... 11
Figure 8. Power supply joint .................................................................................................... 12
Figure 9. Pin numbering of the screw connector ..................................................................... 12
Figure 10. The TR-55 converter signaling parts ...................................................................... 13
Figure 11. DIP-SWITCH for configuring the TR-55 converter – all down-position switches
are off ....................................................................................................................................... 14
Figure 12. How to polarize the line through the terminator..................................................... 16
