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PKE-COM-RTU Modbus RTU communication interface for PKE12/32/65
03/20 MN034005EN
Table of Contents
0. ABOUT THIS MANUAL ................................................................................................................2
0.1 Target group ..................................................................................................................2
0.2 Change log ...................................................................................................................2
0.3 Writing conventions ......................................................................................................2
0.3.1 Hazard warnings concerning material damages .......................................................2
0.3.2 Hazard warnings concerning personal injury .............................................................2
1. PKE-COM-RTU, INTERFACE CONNECTION FOR THE MOTOR OR
CIRCUIT BREAKER PKE12/32/65 .....................................................................................................3
1.1 Introduction ...................................................................................................................3
1.2 Surface mounting ..........................................................................................................3
1.3 Projection ......................................................................................................................4
1.4.Installation .....................................................................................................................4
1.5 Addressing ....................................................................................................................6
1.6 Changing modules ........................................................................................................6
1.7 Device status ................................................................................................................7
1.8 Parameterization ...........................................................................................................7
2. MODBUS RTU ...............................................................................................................................8
2.1 General information ......................................................................................................8
2.2 Communication ............................................................................................................8
2.3 Device plug ...................................................................................................................9
2.3.1 Communication parameters ......................................................................................9
2.4 Operating mode Modbus RTU .....................................................................................9
2.5 Structure of the master request ..................................................................................10
2.5.1 Address ....................................................................................................................10
2.5.2 Function code ...........................................................................................................10
2.5.3 Data ..........................................................................................................................10
2.5.4 Cyclic redundancy check (CRC) ................................................................................10
2.6 Structure of the slave response ..................................................................................10
2.6.1 Required transmission time .....................................................................................10
2.6.2 Normal slave response .............................................................................................10
2.6.3 No slave response ....................................................................................................11
2.6.4 Modbus: Register mapping ......................................................................................11
2.7.1 Inputs ........................................................................................................................12
2.7.2 Outputs .....................................................................................................................14
2.7.3 Set value (Ir) ..............................................................................................................15
2.7.4 Differential trip indication (TRIPR) .............................................................................15
2.7.5 Relative current value (I-REL) ....................................................................................16
2.7.6 Thermal motor image (TH) ........................................................................................16
2.7.7 Type of trip block (TYPE) ...........................................................................................16
2.7.8 Setting for time lag (CLASS) and short-circuit release (I >) (CLASS) ........................17
2.7/9 Remote tripping, PKE basic device (R-TRIP) ............................................................17
3 TECHNICAL DATA .........................................................................................................................18