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All rights strictly reserved. No part of this document may be stored in a retrieval system, or transmitted in any form or by any means to persons not employed by a Eurotherm group company without written permission from Eurotherm Drives Inc. Although every effort has been taken to ensure the accuracy of this document it may be necessary, without notice, to make amendments or correct omissions. Eurotherm Drives cannot accept responsibility for damage, injury, or expenses resulting therefrom.

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Please read this information BEFORE installing the equipment.

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This manual is to be made available to all persons who are required to install, configure or service equipment described herein, or any other associated operation. The information given is intended to highlight safety issues, and to enable the user to obtain maximum benefit from the equipment.

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The equipment described is intended for industrial motor speed control.

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Qualified personnel should carry out installation, operation and maintenance of the equipment. A qualified person is someone who is technically competent and familiar with all safety information and established safety practices; with the installation process, operation and maintenance of this equipment; and with all the hazards involved.
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Area Computer Factory Level CNC Cell Level PC Field Level Motor Drives I/O

MMS, TCP/IP Backbone

PC/VME

PROFIBUS-FMS

PROFIBUS-DP

PROFIBUS-PA

Temp Controller

Field Device

Transmitter
Figure 1 PROFIBUS Application Areas The PROFIBUS Option supports the PROFIBUS-DP variant of the PROFIBUS protocol, which is designed especially for communication between automatic control systems and distributed I/O at the device level. It is most often used to allow a central Programmable Logic Controller or PC based control system to use external slave devices for I/O or specialized functions. The principal advantage is that these devices may be distributed around a machine, thereby saving on the cost of point to point wiring. The open nature of the network also permits equipment from different manufacturers to be mixed on the same bus. Additionally, the off-loading of complex and specialized tasks such as PID temperature control lessens the processing load on the central PLC so that its other functions may be carried out more efficiently and requires less CPU memory.

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PROFIBUS is a vendor independent, open fieldbus standard for a wide range of applications in manufacturing, process and building automation. Vendor independence and openness are guaranteed by the PROFIBUS standard EN50170. With PROFIBUS, devices from different manufacturers can inter-communicate. Suitable interfaces exist for PLCs, that include the Siemens, Mitsubishi and Allen Bradley range. PROFIBUS-DP (De-central Periphery) is described in DIN 19245 Part 3, and forms part of EN 50170 with P-Net and WorldFIP. However it is important to note that P-Net and WorldFIP are wholly incompatible with PROFIBUS, using different wiring and transmission technologies. The PROFIBUS-DP network uses a high-speed version of the RS485 standard, permitting baud rates of up to 12Mbaud. A maximum of 32 PROFIBUS-DP stations (nodes) may be contained within a single network segment. PROFIBUS-DP is a multimaster, master-slave, token passing network. More detailed information, including a detailed guide to products available, may be obtained from the various worldwide PROFIBUS user organizations. You will find contact information in trade magazines or by reference to http://www.profibus.com on the World Wide Web. 1. PROFIBUS-PA is designed especially for process automation. It permits sensors and actuators to be connected on one common bus line even in intrinsically safe areas. PROFIBUS PA permits data communication and power over the bus, using intrinsically safe, 2-wire technology according to the international standard IEC 1158-2, but may also be used on the standard RS485 cabling for non-intrinsically safe applications. 2. PROFIBUS-FMS is the general-purpose solution for communication tasks at the cell level.

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PLC I/O Mapping Physical Actuator 1 Physical Actuator 2 Physical Actuator 3 Physical Actuator 4 I/O scanning Figure 2-1a: Plant wiring conventional comms. systems

Input Ladder Program

Output PLC

I/O Modules

Physical I/O
Input Output Slave 1 Slave 2 Slave 3

Input Output

Slave 4
Figure 2 PROFIBUS compared with conventional communication systems PROFIBUS-DP distinguishes between master devices and slave devices. It allows slave devices to be connected on a single bus thus eliminating considerable plant wiring typical with conventional communications systems. The Figure above compares the two systems. Master devices determine the data communication on the bus. A master can send messages without an external request when it holds the bus access rights (the token). Masters are also called active stations in the PROFIBUS protocol. Slave devices are peripheral devices. Typical slave devices include input/output devices, valves, motor drives and measuring transmitters. This means they will only respond to a master when requested to do so. PROFIBUS-DP is based around the idea of a cyclical scan of devices on the network, during which input and output data for each device is exchanged.

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The process of reading the inputs and writing to the outputs is known as an I/O data exchange. Typically, the parameters from each slave device will be mapped to an area of PLC input and output registers or a single function block so that the controlling ladder logic or program interfaces with the device as if it were an internally fitted module. It is NOT necessary, therefore, for the programmer to know anything about the physical network. The process of network configuration is usually performed using a PC based program, which allows the devices on the network to be defined and device parameters to be mapped into the PLC registers or function blocks. The cyclical scan occurs in the following order: 1. Values from each slave device, Input Data, are first scanned over the network into a pre-defined set of input registers in the master controller. The values might be a set of digital input readings for a digital input unit, or the measured temperature and alarm status from a PID controller. 2. The master then runs its control program, (such as a ladder logic program) using the input data read from the slave devices. 3. The master writes output values (output data) into a pre-defined set of output registers. For example, one of the digital inputs read in the input data might be used to select one of a set of setpoints to be sent to the PID controller. 4. These outputs are then written to each slave device, and the scan-process-write cycle repeats. Typically no more than 16 bits of input data and 16 bits of output data are exchanged for each device during the data exchange. The Profibus LinkCard implementation of the PROFIBUS-DP standard provides the possibility of transferring 120 words in each direction.

The input and output data lengths for a given device is variable and it is possible to have devices with only input data, only output data, or both. The input and output data mixture used by a given slave device is defined by the GSD file. For simple devices such as digital or analog I/O blocks, it is fixed. However, since more complex devices often have a much wider choice of possible values to send, it is usually possible to edit the GSD file to change the mapping of device parameters into Profibus inputs or outputs. This is the case with the Profibus LinkCard, which also allows access to parameter data not in the GSD Input/Output data file. The GSD file is imported into the PROFIBUS Master Network Configuration software before the network is created.
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Suitable for use with Link modules: L5392 L5300/1 LinkStation LinkRack
Connection using shielded, twisted-pair cable LEDs to indicate board and communications status Configured using Function Block inputs and outputs Diagnostics using Function Block outputs Automatic Baud Rate selection Software-selectable Slave Address

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The Technology Option is supplied separately.
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The Profibus Option is provided as a plug-in LinkCard.
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Either of the two cables types detailed below can be used but we recommend Type A as it allows higher speed and longer cable length.

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The PROFIBUS standard suggests that both ends of the transmission line should be connected to safety earth. If you do this, ensure that differences in the ground potentials do not allow circulating currents to flow. These can induce large common mode signals in the data lines and can produce potentially dangerous heating in the cable. If in doubt, ground the shield at only one section of the network.

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If the LinkRack is at the end of the network it must have terminating resistors. All other Profibus Devices in the system should not have terminators. Connect terminating resistors to the last LinkCard as shown. (All resistors 5%, minimum Watt).

Profibus

NETWORK STATUS

MODULE STATUS

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RTS (Pin 5, TB1) is a TTL level signal that can be connected to a repeater. However, most repeaters automatically switch between transmitting and receiving and do not need this connection.
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The Profibus LinkCard Option plugs into a LinkRack Remove the back cover of the LinkRack Install the Profibus card into the recess on the back of the LinkRack. Re-fit the back cover to the LinkRack Make all user-wiring connections. Refer to Wiring Diagram, Figure 3.

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With the correct connections to the active PLC/SCADA supervisor, the MODULE LED will be ON continuously and the NETWORK LED will indicate the Idle State with a short flash.
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These inputs are compiled to a 16 bit word for the PLC.
These inputs are 16 bit words within Link.
Figure 5 Logical to Ordinal and Value LINK Setup
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Figure A PLC Hardware Setup

Figure B Link Setup

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The following Organization Blocks, OB82, OB85, OB06, and OB122, are highly recommended to complete the setup for the PLC. These Organization Blocks keep the PLC from stopping communications and simulating a fatal error to the module.
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1.) Double click on the DP master system connection. 2.) Click the Properties button in the DP master system, then Network Settings. 3.) Click the Bus Parameters button in the DP master system. 4.) Uncheck the Turn on Cyclic Distribution of the Bus Parameters.

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This bi-color (green - red) LED provides device status. It indicates whether or not the device is powered and operating properly. Table 1 defines the different states of the Module Status LED. Table 1

Status

Power off

LED State

Reason
No power applied to the device Host LINK2 module is not running its configuration Device needs commissioning because of missing, incomplete or incorrect configuration PLC is off The device is operating in a normal condition

Device in standby

Device operational
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Red Flashing Red

LINK2 configuration calls for too many reader/writer blocks. Device self test failure may need replacing, try power down/up sequence

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This bi-color (green - red) LED indicates the status of the communications link. Table 2 defines the different states of the Network Status LED. Table 2

Off-line

The device may not have power applied to it. Look at Module Status LED The device has no Profibus Master PLC power off Profibus Master cycling through its configuration steps Communicating with, correct configuration between L5353 and Master Master connection previously established has been lost and has not been reestablished Check mapping with relations of the input/output words related to the Link configuration Device in self-test mode, initializing problem, configuration error

On-line

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Device Self-testing

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