Emerson Keystone OM9 Installation and operating instructions

KEYSTONE OM9 - EPI2 PROFIBUS DPV1 INTERFACE
InstallatIon & MaIntenance InstructIons
1 OPTIONAL MODULE 9: PROFIBUS DPV1
INTERFACE
The OM9 Profibus DPV1 interface is an
electronic module that allows you to connect
the Keystone EPI2electrical actuator to a
Profibus DP network. The module has its own
microprocessor and control program. It works
as a pure bus interface and does not affect the
actuator control integrity. It is installed inside
the actuator housing and takes the electrical
power from the actuator power supply module.
WARNING
EPI2actuator must be electrically isolated before
any disassembling or reassembling operations.
Before any disassembling or reassembling
operations, please follow in detail the relevant
paragraph of the basic installation and operating
manual (latest revision available).
WARNING
The electronic parts of the EPI2actuators and all
option modules can be damaged by a discharge
of static electricity. Before you start, touch a
grounded metal surface to discharge any static
electricity.
WARNING
It is assumed that the installation, configuration,
commissioning, maintenance and repair works
are carried out by qualified personnel and
checked by responsible specialists.
WARNING
Repair work, other than operations outlined in this
manual, is strictly reserved to qualified Emerson
personnel or to personnel authorized by the
company itself.
IMPORTANT
For decommissioning instructions, please refer
to the relevant chapter in the EPI2manual ref.
EBPRM-0091.
The RS 485 interface is located on the module
board. The Profibus network is fully isolated
from the actuator electronics.
The OM9 Profibus DPV1 is designed to support
Profibus DPV0 cyclic communication and
acyclic communication as per Profibus DPV1
extension.
For details about EPI2 actuator the reference
manual is:
EPI2Quarter-turn Electric Actuator IOM.
VCIOM-01493-EN 16/06
NOTE
Based on the Wiring Diagram printed on the board
(I.E.DE5687R00E or DE5687R00G and subsequent),
the board may have a soldered jumper or a dip switch
on the Profibus Termination. Please read the manual
for the relevant description.
TABLE OF CONTENTS
1 Optional module 9: Profibus DPV1 interface... 1
2 Operation and storage .................................. 2
3 Distinguish OLD/NEW models ..................... 2
4 Installation..................................................... 3
5 Communication features............................ 11
6 EPI2DVP1 interface..................................... 11
7 Profibus DP description.............................. 12
8 RS485 transmission mode.......................... 13
9 EPI2 DPV1 power-up................................... 14
10 Data exchange during parameterization... 15
11 Data exchange mode .................................. 17
12 Local settings .............................................. 25
13 GSD file ........................................................ 26
14 Bluetooth communication module ........... 30
15 Profibus certificate...................................... 30
16 Optional kits................................................. 31
www.valves.emerson.com © 2017 Emerson. All rights reserved.

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KEYSTONE OM9 - EPI2 PROFIBUS DPV1 INTERFACE
InstallatIon & MaIntenance InstructIons
2 OPERATION AND STORAGE
The module is designed to work and to be stored in the same environment as the actuator.
FIGURE 1A: DE5687R00E FIGURE 1B: DE5687R00G
3 DISTINGUISH OLD/NEW MODELS
It is important to distinguish between EPI2-F02 old models and the new ones.
To install the board on base actuator, in fact, it is necessary to choose the correct mechanical
parts form the kit.
Furthermore, the meaning of some data exchanged on the Profibus interface depends on model
(old or new); differences will be explained in the following paragraphs.
Figures below allow to distinguish old version of EPI2-F02 from the new version (on the labels are
underlined the digits of Product Number); furthermore, the logic boards with heatsink identifies
old version models, while logic boards without heatsink identifies new version models.
FIGURE 1
Label for NON US MARKET - Digits X7X8 on product coding chart
FIGURE 2
Label for US MARKET – Digit 6 on product coding chart
FIGURE 3
Example of F02-EPI2 old version
(heatsinkpresent)
FIGURE 4
Example of F02-EPI2 new version
(heatsinknopresent)

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KEYSTONE OM9 - EPI2 PROFIBUS DPV1 INTERFACE
InstallatIon & MaIntenance InstructIons
4 INSTALLATION
To assemble the OM9 into the F02-EPI2 actuator, proceed as follows:
•EnsurethatallthepartsreceivedwiththeOM9areavailableasdescribedinparagraphOptional
kits
•UsingparagraphOptionalkits,selectonlymechanicalparts(screwsandspacers)dependingon
actuator models
•Gathertherighttoolsfortheassemblyandforsettingtheactuatorcontrols.
•WithanAllenwrenchof5mmunscrewthecoverscrews(Figure5).
•Removetheactuatorcover(Figure6).
FIGURE 5
FIGURE 6
Follow one of the following assembling procedures depending on actuator model.

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KEYSTONE OM9 - EPI2 PROFIBUS DPV1 INTERFACE
InstallatIon & MaIntenance InstructIons
4.1 Assembling procedure for models 63-125 Nm old version (US or NO US market)
•DetecttheblackcablerequiredfortheOM9whichisalreadyincludedinthe
basic actuator (Figure 7).
•ConnecttheflatcablefurnishedintothekittoconnectorJ1onOM9(Figure8).
•Unscrewthe3screws(Figure9):3pcsM3x10.
FIGURE 7
FIGURE 8
FIGURE 9

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KEYSTONE OM9 - EPI2 PROFIBUS DPV1 INTERFACE
InstallatIon & MaIntenance InstructIons
FIGURE 10
FIGURE 11
FIGURE 12
FIGURE 13
•Tightenthe3metalspacers(Figure10).
•ConnectOM9flatcabletoconnectorJ8onthelogicboard(Figure11).
•PlacetheOM9cardontothespacerandtightenthe4screws(Figure12).
•Connectthe8-pinsconnectortoconnectorJ3onOM9(Figure13)

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KEYSTONE OM9 - EPI2 PROFIBUS DPV1 INTERFACE
InstallatIon & MaIntenance InstructIons
4.2 Assembling procedure for models 250-500-1000-2000 Nm old version (US or NO US market)
•DetecttheblackcablerequiredfortheOM9whichisalreadyincludedinthebasic
actuator; disassemble local mechanical indicator (Figure 14).
•ConnecttheflatcablefurnishedintothekittoconnectorJ1onOM9(Figure15).
•ConnectOM9flatcabletoconnectoronthelogicboard(Figure16).
FIGURE 14
FIGURE 15
FIGURE 16

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KEYSTONE OM9 - EPI2 PROFIBUS DPV1 INTERFACE
InstallatIon & MaIntenance InstructIons
•Connectthe8-pinsconnectortoconnectorJ3onOM9(Figure18)
FIGURE 18
FIGURE 19
4.3 Assembling procedure for models 63-125 Nm new version (US or NO US market)
•DetecttheblackcablerequiredfortheOM9whichisalreadyincludedinthebasic
actuator (Figure 19).
•ConnecttheflatcablefurnishedintothekittoconnectorJ1onOM9(Figure20).
FIGURE 20
•PlacetheOM9cardontotheheatsinkspacersandtightenthe4screws;assemble
local mechanical indicator (Figure 17).
FIGURE 17

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M3x8
KEYSTONE OM9 - EPI2 PROFIBUS DPV1 INTERFACE
InstallatIon & MaIntenance InstructIons
FIGURE 21
FIGURE 22
FIGURE 23
•Unscrewthe3screws(Figure21).
•Tightenthe3metalspacers;inserttheplasticspacer(Figure22).
•ConnectOM9flatcabletoconnectoronthelogicboard(Figure23).
FIGURE 24
•PlacetheOM9cardontothespacersandtightenthe3screws(Figure24)

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KEYSTONE OM9 - EPI2 PROFIBUS DPV1 INTERFACE
InstallatIon & MaIntenance InstructIons
FIGURE 25
FIGURE 26
FIGURE 27
FIGURE 28
•Connectthe8-pinsconnectortoconnectorJ3onOM9(Figure25)
4.4 Assembling procedure for models 250-500-1000-2000 Nm new version (US or NO US market)
•DetecttheblackcablerequiredfortheOM9whichisalreadyincludedinthebasic
actuator; disassemble local mechanical indicator (Figure 26).
•ConnecttheflatcablefurnishedintothekittoconnectorJ1onOM9(Figure27).
•Tightenthe3metalspacersandunscrewthescrewthatfixthemotorcable
(Figure 28).

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KEYSTONE OM9 - EPI2 PROFIBUS DPV1 INTERFACE
InstallatIon & MaIntenance InstructIons
FIGURE 29
FIGURE 30
FIGURE 31
•DisassemblelocalmechanicalindicatorandconnectOM9flatcabletoconnector
on the logic board (Figure 29).
•PlacetheOM9cardontothespacersandtightenthe4screws;assemblelocal
mechanical indicator (Figure 30).
•Connectthe8-pinsconnectortoconnectorJ3onOM9(Figure31)
IMPORTANT
Please note that all the connectors provided with the base actuator and all optional cards are different
from each other (in terms of design and number of pins). In no way is it possible to make a wrong
connection.
•TheOM9cardisnowconnected.
•Replacetheactuatorcoverandfixitproperly.

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5 1918179876
KEYSTONE OM9 - EPI2 PROFIBUS DPV1 INTERFACE
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6 EPI2DPV1 INTERFACE
The module consists of a single PCB that is installed inside the actuator housing. It is connected
to the EPI2base card via a flat cable. The internal wiring connects the Profibus data lines to the
actuator terminal board.
6.1 On board indication
Six LED’s are mounted on the EPI2DPV1 interface to give the following indications for Field
service.LED’sindicationsareactiveonlywhenjumperJP2isclosed.
DL1 (red) Internal comm. error: ON when the internal communication of the
interface card is not working properly.
OFF when the all communication is correct.
DL2 (red) Fail safe action in progress: ON when a fail safe action is in progress due to a
communication fault on the Profibus line.
OFF when the Profibus communication is correct.
DL3 (green) Slave ready: ON when the interface is ready to communicate to
the Profibus line.
OFF when the interface is not ready.
DL4 (green) Reserved
DL5 (green) Profibus: ON when Profibus communication has been
established and the interface has entered in
DATA_EX state.
DL6 (green) Power: ON when the interface is correctly powered.
5 COMMUNICATION FEATURES
Communication protocol Profibus DP according to EN 50170
Network topology Line (bus) structure. With repeaters tree structures can also be realized
Transmission medium Twisted, screened copper cable according to EN 50170
Data rate 9.6 19.2 45.45 93.75 187.5 500 1500 Kbit/sec
Cable length without repeater 1200 1200 1200 1200 1000 400 200 m
Approx. cable length with repeater 10 10 10 10 6 4 2 Km
Station type DPV0 and DPV1 slave
Device number 32 devices per segment without repeater (max 126, with repeaters)
Bus access Token-passing between masters and polling for slaves
Electrical power Actuator powered
Bus termination Available on board via soldering pad
Temperature -40°C, +85°C
EMC protections EN 50081-2 and EN 50082-2
Types of operation Cyclic data exchange, sync mode, freeze mode, fail safe mode
Baud rate Automatic recognition
Addressing Configurable via on board rotary BCD switches
JumperJP2LED DL1 – DL6
6.2 Wiring diagram
The EPI2DPV1 interface is connected to the actuator terminal board as shown in the figure below: Optional module - Profibus interface
Connector H
HW Mode
Profibus line
ShieldDX-P
DX-N
FIGURE 32

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KEYSTONE OM9 - EPI2 PROFIBUS DPV1 INTERFACE
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6.3 Profibus/hardwired mode selection
The EPI2DPV1 interface manages the Profibus/
hardwired mode selection by means of the
input indicated with HW MODE. The physical
input accepts any voltage from 24 to 125V DC or
AC, polarity insensitive.
When no voltage is applied, the actuator is
Profibus controlled and it is possible to send
commands and read the status by Profibus DP.
When an appropriate voltage is applied to
the HW MODE input, the actuator runs under
hardwired control. In this condition the Profibus
master can only read the actuator status, while
the actuator follows the hardwired Open and
Close controls connected to the terminal board.
For further details see the relevant wiring
diagram and the user manual:
EPI2Quarter-turn Electric Actuator IOM.
7 PROFIBUS DP DESCRIPTION
Profibus is a vendor-independent, open
fieldbus standard used in a wide range of
applications in process automation. Vendor
independence and openness are ensured by
the international standards EN 50170 and
EN 50254. The DP communication profile is
designed for data exchange at the field level.
The central controllers (i.e. PLC) communicate
via a serial connection with field devices (as
sensors and actuators). Data exchange is
mainly cyclic. The central controller (called
master) cyclically reads the input information
from the field devices (called slaves) and
cyclically writes the output information to the
slaves. In addition the Profibus DP provides
communication services for parameterization,
alarm handling, and monitoring of intelligent
Logical token passing between master devices
PLC
PC
General Drive Transmitter
EPI2actuators
Slave devices
Master devices
DP master class 1 (DPM 1):
This is the central controller that cyclically
exchanges information with the field
devices. Typical devices are PLC, DCS or PC.
DP master class 2 (DPM 2):
These devices are necessary for
commissioning, maintenance and
diagnostics.
Slave:
Field device, i.e. transmitters, actuators,
drives, etc.
The figure below shows a Profibus DP
configuration with two master devices and
different slave devices.
field devices. Themaximum number of
master and slave devices in a bus segment
is 32 without repeaters. With repeaters the
number can be extended to 126 on one bus.
The maximum cable length depends on the
speed of transmission. The higher the speed,
the shorter is the length. For instance, with
baud rate 93.75Kb/sec, the max cable length
is 1,200 m without repeaters and 10,000 m with
repeaters.
Mono-master or multi-master system
configuration can be provided. Bus access
is controlled by a token passing procedure
between masters and polling (master-slave
procedure) between master and slaves.

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9.6 K 1,200 10,000
19.2 K 1,200 10,000
45.45 K 1,200 10,000
93.75 K 1,200 10,000
187.5 K 1,000 6,000
500 K 400 4,000
1500 K 200 2,000
KEYSTONE OM9 - EPI2 PROFIBUS DPV1 INTERFACE
InstallatIon & MaIntenance InstructIons
8 RS485 TRANSMISSION MODE
The EPI2DPV1 interface uses a half duplex,
multidrop, serial RS485 communication
line. The module communicates with the
masters via its RS485 interface and the
transmission media consists of a shielded
twisted pair cable. Transmission speed from
9.6kbit/sec to 1.5Mbit/sec is available. One
unique transmission speed is allowed for all
devices on the bus when the system is running.
All devices are connected in a bus structure.
Up to 32 station (master and slaves) can be
connected in one segment without repeaters.
Repeaters can be used to extend the number
of devices up to 126 and to link the individual
bus segment in order to enlarge the network
area. The following table shows the relationship
between baud rate, segment length and total
bus length.
Baud rate, K Max. segment length (no repeater), m Max. bus length with 9 repeater, m
The bus must be terminated by an active bus
terminator at the beginning and at the end of
each segment. Only two terminators in one
bus segment must be provided. To ensure
error-free operation, both bus terminators
must be powered. The maximum cable length
depends on the transmission speed. Cable
lengths indicated in table 2 are based on Type A
cable, as specified by the EN 50170, having the
following characteristics.
Shielding
RxD/TxD-P
RxD/TxD-N
DGND
RxD/TxD-P
RxD/TxD-N
DGND
Data line
Data line
390 ohm
220 ohm
390 ohm
DGND
VP (5 V DC)
Bus terminator
Cable
Device 1 Device 2
•Impedance from135to165ohm
•Capacity <30pF/m
•Loopresistance 110ohm/km
•Wiregauge 0.64mm
•Conductorarea >0.34mm2
The use of cable of previously used type B is not
recommended.
The data lines must not be reversed. Use of
shielded cable is mandatory for having high
system immunity against electromagnetic
disturbs. The shield should be connected to
ground on both sides. The data lines should be
kept separate from all other cables. It should
be laid in separate, conductive and earthed
cable trunking. It must be ensured that there
are not voltage differences between individual
nodes of Profibus DP.

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KEYSTONE OM9 - EPI2 PROFIBUS DPV1 INTERFACE
InstallatIon & MaIntenance InstructIons
Soldering padProfibus
RS485
transceiver
Rx/Tx-P-in
Rx/Tx-P-out
Rx/Tx-N-in
Rx/Tx-N-out
Shield
Data line +
Data line -
390 ohm
220 ohm
390 ohm
DGND
VP
EPI2DPV1
interface
Terminal
board
Bus out Bus in
The EPI2DPV1 interface takes its electrical
supply from the actuator power supply module.
The RS485 bus transceiver is isolated from the
actuator electronics. Also the voltage supply of
the bus termination is isolated.
The bus termination is a crucial component to
ensure error-free operation: since the Profibus
terminations are active circuits it is important
that they remain powered also when a part
of the field is powered off. Normal practice
recommends to use external terminations
available on the market and to power them by a
separate, safe power supply.
The EPI2DPV1 interface is equipped with an on-
board bus termination that can be used when
the actuator is at the beginning or at the end of
the bus segment. If the on-board termination
is used, it is not possible to use external
termination as well. The bus termination can
be connected on the data lines by means of a
soldering pad.
The figure below shows the typical Profibus
wiring. The termination must be linked to the
data lines only if the actuator is at the beginning
or at the end of the bus segment.
9 EPI2DPV1 INTERFACE POWER-UP
On power-up the module checks the baud
rate and then waits for the ‘parameterization’
telegram from the master. The
parameterization message contains user
information needed for actuator operation and
is listed in chapter 8: Data exchange during
parameterization‘.
After parameterization the module waits for the
‘configuration’ telegram from the master. The
configuration message contains the number
of input and output bytes reserved in the
memory of the master device for each slave.
Only the number of bytes determined in the
configuration is transmitted between master
and slave. This information is called ‘module’.
The EPI2DPV1 board implements the following
modules:
•Module1:1byteoutput;2bytesinput
•Module2:4byteoutput;6bytesinput
•Module3:1byteoutput;2bytesinput-
consistent
•Module4:4byteoutput;6bytesinput-
consistent
Configuration
not OK
Slave fault
Set slave
address
Check
parameters
Parameterization
correct
Check
configuration
Configuration
correct
Cyclic data
exchange
Power on
Wait
parameterization
Wait
configuration
Data exchange
code
Consistent is an attribute that specify the
capability of the module to maintains data
consistency over the entire data length. In this
way the data will not change during the reading
by the Profibus DP-Master.
For example, if module 2 is selected, the output
telegram consists in 4 bytes, and the input
telegram in 6 bytes.
When parameters and configuration are
correct, the module enters in ‘data exchange
mode’ and starts with normal operation. The
master cyclically sends commands to the slave
and read its status.
The figure on the left shows the power-up flow
diagram of a DP slave.

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10 DATA EXCHANGE DURING PARAMETERIZATION
The following data is sent to the EPI2DPV1 interface:
Byte Name Type Range EU Default
0Reserved DPV1
1Reserved DPV1
2Reserved DPV1
3Fail safe action 1 byte 0Off Off
1Close
2Open
3Stay put
4Go to position
4Storage format 1 byte 0LSB first LSB first
1MSB first MSB first
5Delay before initiating 1 byte 0-10 sec 4
safe operation
6Safe position 1 byte 0-100 %50
7Dead band 1 byte 3-20 Tenth of % 15
8Closing direction 1 byte 0CW CW
1CCW
9Opening speed set 1 byte 0Min 7
… …
9Max
10 Closing speed set 1 byte 0Min 7
… …
9Max
11 Opening torque set 1 byte 0Min 9
… …
9Max
12 Closing torque set 1 byte 0Min 9
… …
9Max
13 Open limit 1 byte 0By torque By position
1By position
14 Close limit 1 byte 0By torque By position
1By position
15 LED color code 1 byte 0OP green - CL red Green LED lit
1OP red - CL green in fully open position
It should be noticed that every time that Profibus communication is established, the
parameterization string will be sent to the device writing the parameters to the set up values.
Thevalues in parameterization string shall be modified at the Master station.
Byte 0-2 Reserved for DPV1
Byte 3 Storage format
This byte defines the format of the variables that are transmitted on 2 or 4 bytes.
Thesetting of this parameter affects the format of the following data:
Output data: (if module 2 is selected) Set point
Input data: (if module 2 is selected) Current position
General data: Slot 1 index 1 Current position
Value: 0: LSB byte is transmitted first (default setting)
1: MSB byte is transmitted first
Byte 4 Fail safe action
This byte defines the action of the actuator in case of loss of signal. The action takes
place only if the local selector is on Remote position and if the bus is operating. When
the bus signal restores, also the actuator restores at its normal functioning.
Value: 0: Off - disable (default setting)
1: Close
2: Open
3: Stay put
4: Go to position indicated in the parameter ‘safe position’
Important: Fail safe action is active only if watchdog control is enabled.
Note * New version of F02 / EPI2 has only opening /
closing speeds 4, 6 and 8 (see VCIOM-02819-EN)

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Byte 5 Delay before initiating fail safe operation
This byte defines the delay before execution of the programmed safe action
Value: minimum 0 sec.
maximum 10 sec.
default value: 4 sec.
Byte 6 Safe position
This byte defines the safe position when ‘fail safe action: go to position’ is selected
Value: minimum 0%
maximum 100%
default value: 50%
Byte 7 Dead band
This byte defines in tenth of % the dead band of the positioning function available on the
modulating actuator. The movement is inhibited until the difference between current
position and requested position (position error) is lower than dead band.
Value: minimum 3 = 0,3%
maximum 20 = 2,0%
default value: 15 = 1,5%
Byte 8 Closing direction
This byte defines the closing direction of the motor
Value: 0: CW – clockwise (default value)
1: CCW – counter clockwise
Byte 9 Opening speed set
This byte defines the speed of the motor when opening
Value: minimum 0
maximum 9
default value: 7
Byte 10 Closing speed set
This byte defines the speed of the motor when closing
Value: minimum 0
maximum 9
default value: 7
Byte 11 Opening torque set
This byte defines the opening torque
Value: minimum 0 = 40% of nominal torque
maximum 9 = 100% of nominal torque
default value: 9
Byte 12 Closing torque set
This byte defines the closing torque
Value: minimum 0 = 40% of nominal torque
maximum 9 = 100% of nominal torque
default value: 9
Byte 13 Open limit
This byte defines the end of travel setting in open direction
Value: 0: by torque
1: by position (default setting)
Byte 14 Close limit
This byte defines the end of travel setting in close direction
Value: 0: by torque
1: by position (default setting)
Byte 15 LED color code
This byte defines the color of the LED indicating the fully open and fully close position
as the optional local panel
Value: 0: Open: LED = green; Close: LED = red (default setting)
1: Open: LED = red; Close: LED = green

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11 DATA EXCHANGE MODE
The following paragraph describes the input and output messages of EPI2DPV1 interface when
working in ‘data exchange mode’ for ‘cyclic data’ and ‘acyclic data’. In all cases it is called ‘input
signal’ if data is sent from actuator to bus, vice-versa it is called ‘output signal’.
11.1 Cyclic communications DPV0
11.1.1Outputdata
The structure of cyclic output data is as follow depending on the module selected:
MODULE 1 OR MODULE 3
Byte b7 b6 b5 b4 b3 b2 b1 b0
0Reserved Reserved Reserved Reserved Reserved Stop
command
Close
command
Open
command
MODULE 2 OR MODULE 4
Byte b7 b6 b5 b4 b3 b2 b1 b0
0Reserved Reserved Reserved Reserved Reserved Stop
command
Close
command
Open
command
1Reserved Reserved Reserved Reserved Reserved Reserved Reserved Positioner
enable
2Set point
3Set point
Command Description Position
Open command When this bit is set to 1 an open command is
issued to the actuator. The open command is
maintained for all the duration on the movement
since the receiving of the bus command until the
open limit has been reached. The open command
is reset when a stop command is received from
the bus.
Associated to output data
Module 1/3 or Module 2/4
Byte 0; bit 0
Close command When this bit is set to 1 a close command is issued
to the actuator. The close command is maintained
for all the duration on the movement since the
receiving of the bus command until the close limit
has been reached. The close command is reset
when a stop command is received from bus.
Associated to output data
Module 1/3 or Module 2/4
Byte 0; bit 1
Stop command When this bit is set to 1 a stop command is issued
to the actuator. The stop command received from
the bus causes the reset of both open and close
command.
Associated to output data
Module 1/3 or Module 2/4
Byte 0; bit 2
Positioner enable When this bit is set to 1 it enables the on-board
positioner. The positioner is enabled as long as
this bit is set to 1.
Associated to
Module 2/4
Byte 1; bit 0
Set point The set point received from the bus is used to
produce the open or close commands to the EPI2
actuator as defined in paragraph 9.1.3: ‘Positioning
algorithm’.
Associated to output data
Module 2/4
Byte 2 and 3
KEYSTONE OM9 - EPI2 PROFIBUS DPV1 INTERFACE
InstallatIon & MaIntenance InstructIons

18
11.1.2 Input data
The structure of the cyclic input data is defined depending on the module selected:
MODULE 1 OR MODULE 3
Byte b7 b6 b5 b4 b3 b2 b1 b0
0Monitor relay Intermediate
position
Motor stopped Fully closed Actuator moving Closing Opening Fully open
1Reserved Reserved Reserved Reserved Local
configuration
Remote Local Hardwired mode
Command Description Position
Fully open The fully open indication is set to 1 when the EPI2actuator is at fully open position. This
indication reflects the status of the open limit on the EPI2actuator.
Associated to input data
Module 1/3 or Module 2/4, Byte 0; bit 0
Opening The opening indication is set to 1 when the EPI2actuator is moving towards the open
direction.
Associated to input data
Module 1/3 or Module 2/4, Byte 0; bit 1
Closing The closing indication is set to 1 when the EPI2actuator is moving towards the close
direction.
Associated to input data
Module 1/3 or Module 2/4, Byte 0; bit 2
Actuator moving This indication is set to 1 when the actuator is moving either in opening or in closing
direction.
Associated to input data
Module 1/3 or Module 2/4, Byte 0; bit 3
Fully close The fully close indication is set to 1 when the EPI2actuator is at fully close position. This
indication reflects the status of the close limit on the EPI2actuator.
Associated to input data
Module 1/3 or Module 2/4, Byte 0; bit 4
Motor stopped This indication is set to 1 when the actuator is not moving and the motor has stopped. Associated to input data
Module 1/3 or Module 2/4, Byte 0; bit 5
Intermediate position This indication is set to 1 when the valve is on an intermediate position. Associated to input data
Module 1/3 or Module 2/4, Byte 0; bit 6
Monitor relay This indication is set to 1 when the actuator is available for bus control. Monitor relay
indication means that the local selector is on remote position and no alarms are present.
Associated to input data
Module 1/3 or Module 2/4, Byte 0; bit 7
Hardwired mode This indication is set to 1 when the hardwired mode is selected. Associated to input data
Module 1/3 or Module 2/4, Byte 1; bit 0
Local This indication is set to 1 when the optional local selector is set on local position to enable
open/close local command.
Associated to input data
Module 1/3 or Module 2/4, Byte 1; bit 1
Remote This indication is set to 1 when the EPI2actuator is not equipped with the optional local
selector or when local selector is set on remote position to enable remote commands.
Associated to input data
Module 1/3 or Module 2/4, Byte 1; bit 2
Local configuration This indication is set to 1 when a local configuration in progress. Associated to input data
Module 1/3 or Module 2/4, Byte 1; bit 3
Current position The current position read from the base card. Associated to input data
Module 2/4, Byte 2 and 3
Positioner active This indication is set to 1 when the on-board positioner is enabled. Associated to input data
Module 2/4, Byte 4; bit 0
Current torque The current torque read from the base card. Associated to input data
Module 2/4, Byte 5
MODULE 2 OR MODULE 4
Byte b7 b6 b5 b4 b3 b2 b1 b0
0Monitor relay Intermediate
position
Motor stopped Fully closed Actuator moving Closing Opening Fully open
1Reserved Reserved Reserved Reserved Local
configuration
Remote Local Hardwired mode
2Current position
3Current position
4Reserved Reserved Reserved Reserved Reserved Reserved Reserved Positioner active
5Current torque
KEYSTONE OM9 - EPI2 PROFIBUS DPV1 INTERFACE
InstallatIon & MaIntenance InstructIons

19
11.1.3 Positioning algorithm
A positioning algorithm (position closed loop
control) is implemented on the EPI2DPV1
interface card.
Positioning function compares the position,
received from the base card, with the position
request received from the bus. If the difference
between ‘position request and present position’
is greater than the ‘dead band’ an open or a
close command is sent to the base card. Dead
band is configurable via bus from 0,3 to 2,0%.
11.1.4 Diagnostic message
The EPI2DPV1 interface manages the
diagnostic indication coming from the actuator
as stated by the Profibus DP V1 standard.
When the EPI2DPV1 interface needs to notify
a fault to the master while in data exchange
mode, it changes the function code in its
response message to ‘high priority’. During
the next regular bus cycle the master in turn
MASTER EPI2_DPV1
Data exchange request
Data exchange response
Data exchange request
Data exchange responde (Function code = high priority)
Slave_Diag request
Salve-Diagresponse(DiagExt-Diag=1)
Data exchange request
Data exchange response
Data exchange request
Data exchange response (Function code = high priority)
Slave_Diag request
Slave_Diag response (Diag.Ext_Diag = 0)
Data exchange request
Data exchange response
Fault on
Fault off
MS LSB
Octet 1
Standard diagnostic block
6 octets
Octet 2
Octet 3
Octet 4
Octet 5
Octet 6
Type IRD, length Identifier related diagnostic block
2 Octets0 0 0 0 a a a a
Type DRD, Lenght
Device related diagnostic block
Status messages
6 octets
Identifier, Status_Type
Slot_Number
Status_Specifier
d d d d d d d d
d d d d d d d d
The diagnostic message implemented by EPI2_DPV1 has the following structure:
KEYSTONE OM9 - EPI2 PROFIBUS DPV1 INTERFACE
InstallatIon & MaIntenance InstructIons
send a ‘Slave_Diag’ request that is answered
with a ‘Slave_Diag’ response. The availability
of specific diagnosis information is notified by
Dia.Ext_Diag flag set to 1. Once the master
was able to catch the diagnosis information it
returns to the standard cyclic data exchange
mode. To notify the termination of the diagnosis
incident the EPI2_DPV1 interface send a ‘high
priority’ response. The master answers with
a ‘Slave_Diag’ request that is followed by a
‘Slave_Diag’ response with Dia.Ext_Diag flag
set to 0.

20
KEYSTONE OM9 - EPI2 PROFIBUS DPV1 INTERFACE
InstallatIon & MaIntenance InstructIons
Diag.Pm_Req (1) = Slave has to be re-parameterized
Diag.Stat_Diag (1) = During start-up phase slave not able to provide valid
diagnosis data
DP (1) = Fixed at 1
Diag.WD_On (1) = Threshold monitoring activated
Diag.Freeze_Mode (1) = FREEZE command received
Diag.Sync_Mode (1) = SYNC command received
reserved
Diag.Deactivated (1) = Diagnosis deactivated (sets master)
Ident_Number High byte of the slave’s ident number. EPI2_DPV1 report 0x09
Ident_Number Low byte of the slave’s ident number, EPI2_DPV1 report 0xE3
Diag_Station_Non_Existent (1) = Slave does not exist (sets master)
Diag_Station_Not_Ready (1) = Slave not ready for data exchange
Diag_Cfg_Fault (1) = Slave has mismatching configuration data
Diag_Ext_Diag (0) = Slave sends standard diagnosis data only (6 bytes) or
with extended diagnosis without fault (i.e. when the fault
condition disappears)
Diag_Not_Supported (1) = Slave does not support the required function
Diag_Invalid_Slave_Response (0) = Set by slave
(1) = Set by master in case of fault
Diag.Prm_Fault (1) = Incorrect parameterization
Diag.Master_Lock (1) = Slave has been parameterized by a different master
(setsmaster)
reserved
Diag.Ext_Diag_Overflow (1) = Slave has more diagnosis data than fit into the buffer
Diag_Master_Add Address of the master that has parameterized the slave 0xFF
when slave not parameterized yet
Standard diagnostic block
Octet 1 Bit0
Octet 2 Bit0
Octet 3 Bit0
Octet 4 Bit0
Octet 5 Bit0
Octet 6 Bit0