Voltage regulator TAPCON 260

Transcription

1 Voltage regulator TAPCON 260 Supplement /01 Protocol description MODBUS

2 All rights reserved by Maschinenfabrik Reinhausen Copying and distribution of this document and utilization and communication of its contents are strictly prohibited unless expressly authorized. Offenders will be held liable for the payment of damages. All rights reserved in the event of the grant of a patent, utility model or ornamental design registration. The product may have been modified after this document went to press. We expressly reserve the right to make changes to the technical data, the design or the scope of delivery. Generally, the information provided and the arrangements agreed during processing of the relevant quotations and orders are binding. The original operating instructions were drawn up in German.

3 Table of Contents Table of Contents 1 General notes About this document General information Abbreviations used Voltage regulator connections Settings on the voltage regulator Communication interface RS Communication interface RS Fiber-optic cable (optional) Modbus RTU via TCP Protocol specification Error codes Modbus addressing model Data points Outputs (0X reference points) Inputs (1X reference points) Holding register (4X reference points) Maschinenfabrik Reinhausen /01 EN TAPCON 260 3

4 Table of Contents 5.4 Input register (3X reference points) TAPCON /01 EN Maschinenfabrik Reinhausen 2011

5 1 General notes 1 General notes 1.1 About this document This document describes implementation of the interface protocol Modbus ASCII and Modbus RTU for the TAPCON 260. Read this description along with the technical file for the TAPCON General information This implementation of the MODBUS communication protocol (ASCII and RTU mode) in the TAPCON 260 is based on the "Modicon Modbus Protocol Reference Guide", PI-MBUS-300 Rev. J, Copyright 1996 von Modicon Inc. 1.3 Abbreviations used Abbreviation ASCII IP LSW MSW RTU SCADA Table 1 Definition American Standard Code for Information Interchange Internet Protocol Least Significant Word Most Significant Word Remote Terminal Unit Supervisory Control and Data Acquisition Abbreviations Maschinenfabrik Reinhausen /01 EN TAPCON 260 5

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7 2 Voltage regulator connections 2 Voltage regulator connections The physical interfaces RS232, RS485, optional fiber-optic cables and the Ethernet are provided on the Voltage regulator for data transfer via the Modbus ASCII and Modbus RTU protocol. Figure 1 CIC card 1 RS232 (9 pin female SUB-D connector) 2 RS485 3 Ethernet RJ45 (optional for Modbus RTU) 4 FH-ST or F-SMA fiber-optic cable in 850 nm or 660 nm (optional) 5 Reset key 6 TxD LED for transmit signal 7 RxD LED for receive signal 8 Clk LED for operating mode (flashes for 2 seconds) 9 Clip for connecting cable shield with functional ground Maschinenfabrik Reinhausen /01 EN TAPCON 260 7

8 2 Voltage regulator connections RS232 RS485 Ethernet (RJ45) (optional for Modbus RTU) Fiber-optic cable (optional) 9 pin female SUB-D connector Pin 2: TxD Pin 3: RxD Pin 5: GND 3 pin connector from Phoenix (MC1.5/3 GF 3.5) Pin 1: GND (100 Ω ground resistance) Pin 2: B (inverted) Pin 3: A (not inverted) Polarity: A > B by 200 mv corresponds to 1. A < B by 200 mv corresponds to 0. An interrupted communication line corresponds to 1. The start bit has the designation 0. Recommended terminating resistor 120 Ω. Pin 1: Tx+ Pin 2: Tx- Pin 3: Rx+ Pin 6: Rx- FH-ST (850 nm or 660 nm) F-SMA (850 nm or 660 nm) Table 2 Interfaces available 8 TAPCON /01 EN Maschinenfabrik Reinhausen 2011

9 3 Settings on the voltage regulator 3 Settings on the voltage regulator The following chapters describe how to set the parameters for communication at the relevant interface on the TAPCON 260. > Configuration > Next* > Comm. interface Depending on the product version and software, you will need to press "Next" a varying number of times to reach the "Comm. interface" menu. You will find more information on how to set the parameters in the technical file for TAPCON Communication interface RS232 Communication interface Baud rate communication Network address TCP port Fiber-optic cable light ON/OFF Local SCADA address Send delay time Modbus type RS /19.2/38.4/57.6 kbaud (0 = broadcast message) ms (e.g 2 ms, in order to compensate for the response time of an external converter RS485/RS232 when switching between transmit and receive operation) Modbus ASCII or Modbus RTU Table 3 Interface settings RS232 Maschinenfabrik Reinhausen /01 EN TAPCON 260 9

10 3 Settings on the voltage regulator 3.2 Communication interface RS485 Communication interface Baud rate communication Network address TCP port Fiber-optic cable light ON/OFF Local SCADA address Send delay time Modbus type RS /19.2/38.4/57.6 kbaud (255 = Broadcast-Meldung) ms (e.g 2 ms, in order to compensate for the response time of an external converter RS485/RS232 when switching between transmit and receive operation) Modbus ASCII or Modbus RTU Table 4 Interface settings RS Fiber-optic cable (optional) Communication interface Baud rate communication Network address TCP port Fiber-optic cable light ON/OFF Local SCADA address Send delay time Modbus type FOC 9.6/19.2/38.4/57.6 kbaud ON (1 corresponds to light On) or OFF (1 corresponds to light Off) (255 = Broadcast-Meldung) Modbus ASCII or Modbus RTU Table 5 Interface settings FOC 10 TAPCON /01 EN Maschinenfabrik Reinhausen 2011

11 3 Settings on the voltage regulator 3.4 Modbus RTU via TCP This is not Modbus TCP. It is a Modbus RTU message which is transferred by a TCP/IP wrapper and sent via a network. Communication interface Baud rate communication RJ45 fixed 19.2 kbaud Network address TCP port 1234 Local SCADA address Send delay time Modbus type (255 = Broadcast-Meldung) Ethernet only for Modbus RTU Table 6 Interface settings RJ45 Maschinenfabrik Reinhausen /01 EN TAPCON

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13 4 Protocol specification 4 Protocol specification Modbus ASCII: 7E1 (7 data bits, even parity, 1 stop bit) Modbus RTU: 8E1 (8 data bits, even parity, 1 stop bit) The following functions are supported: Function Code Group name 02 Read input status 03 Read holding registers 04 Read input registers 05 Force single coil 06 Preset single register Table 7 Supported function codes No more than 1 register should be written with one request. No more than 1 coil should be switched with one request. Read input status also includes the data points of Read coil status. Read input registers also includes the data points of Read holding registers 4.1 Error codes The following error codes are implemented: Function Code Group name 01 Illegal function 02 Illegal data 03 Illegal data value Table 8 Implemented error codes Multiple communication links are not supported. Communication is half-duplex mode. Addresses in this document relate to the Modbus PDU addresses. Example: Reading the input status with address 8 results in reading address 7 in the discrete input block of the Modbus data model. Maschinenfabrik Reinhausen /01 EN TAPCON

14 4 Protocol specification 4.2 Modbus addressing model Figure 2 Modbus addressing model 14 TAPCON /01 EN Maschinenfabrik Reinhausen 2011

15 5 Data points 5 Data points 5.1 Outputs (0X reference points) The outputs can only be described. The current status cannot be read. Function code 1 is not implemented. The remote mode must be set for commands from the control system on TAPCON 260 to be executed on the Voltage regulator. Address Description 0 Raise (On = raise; Off = no function; only in manual mode) 1 Lower (On = lower; Off = no function; only in manual mode) 5 Auto/manual (On = auto mode; Off = manual mode) 8 Raise/lower desired voltage value This function is optional. Parameterization is undertaken by MR. The desired voltage value function 1/2/3 is possible under the following conditions: - no inputs parameterized for selecting desired voltage values 2 and 3 - raise/lower desired voltage value function not parameterized Parameterization is undertaken by MR. 8 Desired voltage value 1 9 Desired voltage value 2 10 Desired voltage value 3 11 SI command 1 12 SI command 2 13 SI command 3 Each of these SI commands sets a corresponding flag in the TAPCON 260. The status of the flags can be used like an input of the I/O or UC module to activate or deactivate a TAPCON 260 function. 15 Circulating reactive current parallel operation method 27 Master parallel operation method 28 Follower parallel operation method Table 9 Device data points: Outputs Maschinenfabrik Reinhausen /01 EN TAPCON

16 5 Data points 5.2 Inputs (1X reference points) Address Description 0 Function monitoring 1 Undervoltage 2 Overvoltage 3 Overcurrent 4 Parallel operation error 5 Auto/Manual (1 = Auto, 0 = Manual) 6 8 Desired voltage value 1 9 Desired voltage value 2 10 Desired voltage value 3 11 SI command 1 active 12 SI command 2 active 13 SI command 3 active 14 Tap-change in progress 15 Parallel operation On 16 Local/remote 24 Motor protective switch Messages which can be parameterized: The TAPCON 260 has 4 messages which can be parameterized. These can be put on an input or relay. The messages are ON when there is a signal at the parameterized input or the parameterized relay is activated. 25 Message no Message no Message no Message no Master parallel operation method 28 Follower parallel operation method 29 Circulating reactive current parallel operation method Table 10 Device data points: Inputs 16 TAPCON /01 EN Maschinenfabrik Reinhausen 2011

17 5 Data points 5.3 Holding register (4X reference points) Addres s 0 Table 11 Description Transmitted value Scaling Mini-mum Maxi-mum Multi-plier Offset Units Desired voltage 490 1, V 1 value Device data points: Holding register Reso-l ution 5.4 Input register (3X reference points) Addres s Description Transmitted value Scaling Mini-mum Maxi-mum Multi-plier Offset Units Reso-l ution 0 Tap position Measured voltage 0 1, V 1 2 Voltage deviation -1,000 2, % 1* *as % of effective voltage level 5 Active current -22,000 22, % 1 Table 12 Device data points: Input register Maschinenfabrik Reinhausen /01 EN TAPCON

18 /01 EN 07/11 Maschinenfabrik Reinhausen GmbH Falkensteinstrasse Regensburg Phone: Fax: sales@reinhausen.com