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Table of Contents
TGH1423en/04.2010
1. Effective use of this manual .................................................................................. 5
1.1 Notes for the user ..................................................................................................................... 5
2. Safety information .................................................................................................. 7
2.1 General safety information ...................................................................................................7
2.2 Work activities on electrical installations ........................................................................ 7
3. Function ....................................................................................................................9
3.1 Product description ................................................................................................................. 9
3.2 Function ...................................................................................................................................... 9
3.3 Measurement technique: ...................................................................................................... 9
4. Installation, connection ...................................................................................... 11
4.1 Connection assignment ..................................................................................................... 11
5. Operation and setting ......................................................................................... 13
5.1 PWM measured value output X1 ..................................................................................... 13
5.2 Interface protocol ................................................................................................................. 13
5.2.1 SPI timing ................................................................................................................................. 14
5.2.1.1 Timing for the receipt of one byte from the master .......................................... 14
5.2.1.2 Timing for the communication cycle from the Master ..................................... 14
5.2.2 Messages .................................................................................................................................. 15
5.2.2.1 RESET .................................................................................................................................. 15
5.2.2.2 Selecting the measuring range ................................................................................. 15
5.2.2.3 Hardware version query .............................................................................................. 16
5.2.2.4 Software version query ................................................................................................ 16
5.2.2.5 Status query ..................................................................................................................... 16
5.2.2.6 Function control ............................................................................................................. 17
5.2.2.7 Reading slave data ......................................................................................................... 17
5.3 Other hardware features .................................................................................................... 17
5.4 Other software features ......................................................................................................18
5.5 Measuring range and measuring times ........................................................................ 18
5.5.1 Measuring range 30 mA, 100 mA .................................................................................... 18
