ABB TPU2000R - User Manual

TPU2000/2000R Modbus/Modbus Plus/ Modbus TCP/IP Automation Guide
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TPU2000/2000R SERIAL MODBUS/MODBUS PLUS/
MODBUS TCP/IP AUTOMATION TECHNICAL GUIDE
TG 7.11.1.7-61
Version 1.1
5/04

ABB TPU2000R Specifications

General

Brand	ABB
Model	TPU2000R
Category	Computer Hardware
Language	English

Summary

Section 2 - Communication Card Identification and Physical Port Characteristics

Communication Card Part Number Options

Unit Communication Card Verification

Section 3 - TPU2000 and TPU2000 R Device Connectivity

RS232 Interface Connectivity

Explains the RS232 interface, its widespread use, and how it propagates signals.

Port Isolation

Discusses substation environments and the importance of isolating RS232 ports to prevent interference.

RS232 Cable Connectivity

Section 4 - TPU2000 and TPU2000 R Device Parameterization

COM 0 Port (Front Port Configuration)

Details how to set up parameters for COM 0 port configuration on the front panel.

COM Port 1 Option Settings (TPU2000 R Only)

Describes configuration options for COM Port 1 on the TPU2000R, active when no front panel interface is present.

COM Port 2 Option Settings (TPU2000 R Only)

COM Port 3 and AUX COM Configuration

Section 5 - Modbus

Modbus Protocol

Explains how Modbus operates with a host device transmitting commands and attached devices responding.

Modbus ASCII Emulation

Details the ASCII emulation of Modbus, its character definition, and frame format.

Modbus RTU Emulation

Explains the RTU emulation of Modbus, contrasting it with ASCII and noting its efficiency.

Modbus Plus (Available on the TPU2000 R Only)

Modbus Plus Theory of Operation

Describes Modbus Plus as a token passing network based on HDLC protocol implementation.

4 X Register Read Capabilities

Function Code 03 - Read Holding Registers (Read Only)

Explains the 4x frame sequence for Function 03 and how the host decodes requested data.

Register Scaling and Re-Mapping and User Definable Register (UDR) Configuration Process

TPU2000 and 2000 R Internal Operation

Scaling Option and Destination Register Length Options Explained

Relationship Between Scaled and Unscaled Formats for Offset Bipolar, Bipolar, Unipolar, and Negative Unipolar Scaling Selection in the TPU2000 and 2000 R

Diagnostic Status (2 Registers Defined)

Table 5-13. Diagnostic Status Modbus Address Map Definition

Minimum and Maximum Peak Demand (60 Registers Defined)

Table 5-23. Peak Demand Register Map for the TPU2000 R and TPU2000

Differential Fault Record Reporting

Table 5-33. Differential 2 Winding Fault Record Register Definition

Defines the register map for the 2-winding differential fault buffer.

Through Fault Buffers

Table 5-35. 2 Winding Through Fault Register Definition for the TPU2000 TPU2000 R

Harmonic Restraint Fault Record

Table 5-37. 2 Winding Harmonic Restraint Fault Record Buffer Modbus Address Assignment

Modbus Plus Global Register Mapping (37 Registers Defined) TPU2000 R Only

Meter Data Access To a PLC Host From an ABB Relay

Modbus Troubleshooting Tips

08 - Diagnostic Functions

Lists Modbus commands to assist with network troubleshooting, specifically diagnostic functions.

Modbus ASCII Communication Timing Analysis

Discusses common errors in Modbus ASCII network timing setup and factors affecting network timing.

Modbus Baud Rate Analysis

Table 5-85. Character Transfer Time vs Baud Rate

TPU2000 TPU2000 R Throughput Analysis

Table 5-86. TPU2000 TPU2000 R Modbus Command Throughput (Average Time in mS)

Final Throughput Calculation and Analysis