Siemens SENTRON PAC3100 - Figure 6-11 RS 485 Terminal Block; Figure 6-12 Block Diagram: General RS 485 Topology

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Connection

6.5 Connecting to the RS 485 bus

SENTRON PAC3100

Manual, 07/2009, A5E02385159B-01

RS 485 terminal block

COM Common = Ground

+/B B signal; D1

-/A A signal; D0

Figure 6-11 RS 485 terminal block

Block diagram

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6ODYHQ

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TER Bus termination resistor (termination)

PU Pull-up resistor

PD Pull-down resistor

(1) Grounding of the cable shielding

(2) Grounding of the common line, preferably only at one point for the whole bus

Figure 6-12 Block diagram: General RS 485 topology

Main Page

Table of Contents3
SENTRON PAC3100 Manual, 07/2009, A5E02385159B-017
Introduction11
Purpose of this Document11
Orientation Aids11
Components of the Product12
Latest Information and Correction Sheet12
Further Documentation12
Safety Notes13
Figure 2-1 Safety-Related Symbols on the Device13
Description15
Features15
Table 3- 1 Device Versions15
Measuring Inputs17
Table 3- 2 Available Connection Types18
Figure 3-1 Display of the Measured Voltage in the Case of Connection Type 3P4W18
Figure 3-2 Display of the Measuring Voltage in the Case of Connection Type 3P3W18
Table 3- 3 Display of the Measured Variables Depending on the Connection Type19
Figure 3-3 Indicating Overload on the Display20
Figure 3-4 Display of the Measurable Maximum Value at Overload20
Measured Variables21
Table 3- 4 Measured Variables21
Power Demands and Counters22
Acquisition of Power Demand22
Energy Counters23
Behavior in the Case of Power Failure and Power Restore23
Digital Inputs and Outputs23
Digital Inputs24
Figure 3-5 Block Diagram: Digital Inputs24
Figure 3-6 Digital Inputs with Switch and Internal Power Supply on Terminal DIC24
Digital Outputs25
Figure 3-7 Digital Inputs with Switch, Internal Power Supply, and Additional External Power Supply on25
Figure 3-8 Energy Pulse Output25
RS 485 Interface26
Figure 3-9 Pulse Length and Turn-Off Time26
Table 3- 5 Default Modbus RTU Communication Settings27
Slots on the Rear of the Device28
Table 3- 6 Meaning of the LED Signals28
Figure 3-10 Non-Usable Housing Openings28
Operation Planning29
Figure 4-1 Mounting Position29
Table 4- 1 Environmental Conditions30
Mounting31
Unpacking31
Mounting on the Switching Panel32
Tools32
Mounting Dimensions32
Installation Steps32
Deinstallation36
Figure 5-1 Deinstallation, Releasing the Locking Hooks37
Connection39
Safety Notes39
Connections40
Figure 6-1 Connection Designations, View of the Rear and Top of the Device41
Figure 6-2 Terminal Labeling42
Figure 6-3 Terminal Labeling43
Figure 6-4 Terminal Block with 2 Digital Inputs and Outputs, Functional Ground43
Connecting the Cables to the Terminals45
Connection Examples45
Figure 6-5 Connecting Cables to the Screw Terminal45
Figure 6-6 Connection Type 3P4W, Without Voltage Transformer, with Three Current Transformers46
Figure 6-7 Connection Type 3P4W, with Voltage Transformer, with Three Current Transformers46
Figure 6-8 Connection Type 3P3W, Without Voltage Transformer, with Three Current Transformers47
Figure 6-9 Connection Type 3P3W, with Voltage Transformer, with Three Current Transformers47
Connecting to the RS 485 Bus48
Figure 6-10 Connection Type 3P3W, with Voltage Transformer, with Three Current Transformers48
Figure 6-11 RS 485 Terminal Block49
Figure 6-12 Block Diagram: General RS 485 Topology49
Figure 6-13 Bus Termination Using External Resistor50
Commissioning51
Overview51
Applying the Supply Voltage51
Table 7- 1 Connection of Supply Voltage52
Parameterizing the Device53
Setting the Language53
Figure 7-1 Language Selection53
Figure 7-2 "SETTINGS" Menu54
Figure 7-3 "LANGUAGE" Edit Mode54
Voltage Input55
Setting the Connection Type55
Table 7- 2 Available Connection Types55
Figure 7-4 "CONNECTION TYPE" Device Setting55
Measurement Using Voltage Transformers56
Figure 7-5 "USE Pts?" Device Setting56
Setting the Conversion Ratio of the Voltage Transformer57
Figure 7-6 "USE Pts?" Device Setting Switched on57
Setting the Voltage Input58
Current Input59
Setting the Conversion Ratio of the Current Transformer59
RS 485 Interface60
Applying the Measuring Voltage60
Applying the Measuring Current61
Checking the Displayed Measured Values62
Operator Control63
Device Interface63
Displays and Operator Controls63
Figure 8-2 Information Structure and Navigation66
Display of the Measured Variables70
Display of the "MAIN MENU72
Table 8- 1 Assignments of the Function Keys in the "MAIN MENU73
Display of the "SETTINGS" Menu74
Table 8- 2 Assignments of the Function Keys in the "SETTINGS" Menu74
Display of the Device Settings75
Table 8- 3 Assignments of the Function Keys in the Device Settings Display75
Edit Mode of the Device Settings76
Steps77
Operator Input Steps in the Measured Variable Display77
Table 8- 4 Assignments of the Function Keys in Edit Mode of the Device Settings77
Operator Input Steps in the "MAIN MENU78
Operator Input Steps in the "SETTINGS" Menu79
Operator Input Steps in Device Settings Display80
Operator Input Steps in Edit Mode of the Device Settings81
Parameterizing83
Introduction83
Parameterizing the Operator Interface83
Groups of Settings83
Device Information84
Language and Regional Settings85
Basic Parameters85
Power Demand88
Energy Counters89
Integrated I/Os89
Communication91
Display92
Advanced93
PASSWORD PROTECTION" Device Setting94
Password Management95
Calling Password Management95
Switch on Password Protection96
Switch off Password Protection97
Change Password97
Password Lost - What to Do98
Service and Maintenance101
Calibration101
Cleaning101
Firmware Updates101
Repair102
Disposal103
Technical Data105
Safety Regulations112
Labeling113
Dimensional Drawings115
Frame Dimensions116
Clearances117
Appendix119
Measured Variables119
A.1 Measured Variables119
Table A- 1 Load Profile123
Table A- 2 Designations of the Measured Variables on the Display124
Table A- 3 Designations of the Measured Value Properties on the Display124
Modbus RTU125
Structure of the Job Message Frame125
Table A- 4 Structure of the Message Frame125
A.2 Modbus RTU125
Character Frame126
A.2.2 Character Frame126
Function Codes127
Table A- 5 Supported Function Codes127
A.2.3 Function Codes127
Exception Codes129
Table A- 6 MODBUS Exception Codes129
A.2.4 Exception Codes129
Modbus Measured Variables with the Function Codes 0X03 and 0X04130
Table A- 7 Available Measured Variables130
Structure - Digital Input Status and Digital Output Status with the Function Codes 0X03 and 0X04133
Structure - Device Diagnostics and Device Status with the Function Codes 0X03 and 0X04133
Table A- 8 Structure - Status of the Digital Inputs and Outputs, Modbus Offset 207 and 209133
Table A- 9 Modbus Offset 205, Tab 2: Structure Device Status and Device Diagnostics133
Modbus Status Parameters with the Function Code 0X02134
Modbus Settings with the Function Codes 0X03, 0X04 and 0X10134
Table A- 10 Status Parameters134
Table A- 11 Settings Parameters134
Table A- 12 Settings Parameter for the Digital Output DO 0.0135
Table A- 13 Settings Parameter for the Digital Output DO 0.1135
Table A- 14 Settings Parameter for the Language and the Phase Labels136
Table A- 15 Settings Parameter for the Display136
MODBUS Communication Parameter with the Function Codes 0X03, 0X04 and 0X10137
Table A- 16 Communication Parameters137
Modbus Device Information with the Function Codes 0X03, 0X04 and 0X10138
Table A- 17 I&M 0 Parameters with the Function Codes 0X03 and 0X04138
Table A- 18 I&M 1-4 Parameters with the Function Codes 0X03, 0X04 and 0X10138
Modbus Command Parameters139
Table A- 19 Command Parameters139
MODBUS Standard Device Identification with the Function Code 0X2B140
Table A- 20 MODBUS Standard Device Identification Parameters140
Correction Sheet141
Table A- 21 Errors, Comments, and Suggestions for Improvements141
A.3 Correction Sheet141
ESD Guidelines143
Electrostatic Sensitive Devices (ESD)143
List of Abbreviations145
Abbreviations145
Table C- 1 Meaning of Abbreviations145
C.1 Abbreviations145
Glossary147
Index149

Siemens SENTRON PAC3100 - Figure 6-11 RS 485 Terminal Block; Figure 6-12 Block Diagram: General RS 485 Topology

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