Table of contents
SIMATIC RF600
4
System Manual, 06/2019, J31069-D0171-U001-A22-7618
4.3.9.4
Types of antenna ................................................................................................................... 53
4.3.9.5
Antenna cables ...................................................................................................................... 53
4.4
Minimum distances and maximum ranges ............................................................................ 55
4.4.1
Configurations of antenna and transponder .......................................................................... 55
4.4.2
Effects of the materials of the mounting surfaces on the range ............................................ 58
4.4.3
Maximum read/write ranges of transponders ........................................................................ 59
4.4.4
Minimum distances between antennas and transponders .................................................... 65
4.4.5
Influence of electrically conductive walls on the range .......................................................... 65
4.5
Environmental conditions for transponders ........................................................................... 66
4.6
The response of electromagnetic waves in the UHF band .................................................... 66
4.6.1
The effect of reflections and interference .............................................................................. 66
4.6.2
Influence of metals ................................................................................................................. 67
4.6.3
Influence of liquids and non-metallic substances .................................................................. 68
4.6.4
Influence of external components .......................................................................................... 68
4.7
Planning and installation of UHF read points......................................................................... 69
4.7.1
Technical basics..................................................................................................................... 69
4.7.2
Implementation of UHF RFID installations............................................................................. 72
4.7.2.1
Preparation phase.................................................................................................................. 72
4.7.2.2
Test phase ............................................................................................................................. 73
4.7.2.3
Setting up read points ............................................................................................................ 74
4.7.3
Dealing with field disturbances .............................................................................................. 77
4.7.3.1
Types and approaches to solutions ....................................................................................... 77
4.7.3.2
Measures for eliminating field disturbances........................................................................... 78
4.8
Chemical resistance of the readers and transponders .......................................................... 80
4.8.1
Readers.................................................................................................................................. 80
4.8.1.1
Overview of the readers and their housing materials ............................................................ 80
4.8.1.2
Pocan CF2200 ....................................................................................................................... 81
4.8.2
Transponder........................................................................................................................... 83
4.8.2.1
Overview of the transponders and their housing materials ................................................... 83
4.8.2.2
Acrylonitrile/butadiene/styrene (ABS) .................................................................................... 83
4.8.2.3
Polyamide 12 (PA12) ............................................................................................................. 84
4.8.2.4
Polyamide 6.6 (PA 6.6) .......................................................................................................... 86
4.8.2.5
Polyamide 6.6 GF (PA 6.6 GF) .............................................................................................. 87
4.8.2.6
Polyethylene terephthalate (PET) .......................................................................................... 89
4.8.2.7
Polypropylene (PP) ................................................................................................................ 91
4.8.2.8
Polyphenylene sulfide (PPS) ................................................................................................. 95
4.8.2.9
Polyvinyl chloride (PVC) ........................................................................................................ 96
4.9
Regulations applicable to frequency bands ........................................................................... 97
4.10
Guidelines for electromagnetic compatibility (EMC) .............................................................. 97
4.10.1
Overview ................................................................................................................................ 97
4.10.2
What does EMC mean?......................................................................................................... 98
4.10.3
Basic rules.............................................................................................................................. 99
4.10.4
Propagation of electromagnetic interference ....................................................................... 100
4.10.5
Equipotential bonding .......................................................................................................... 102
4.10.6
Cable shielding..................................................................................................................... 103
