MagFlux®, SuSix® and Oxix® are ® registered trademarks of MJK Automation A/S, Denmark.
Modbus® is a registered trademark of the Modbus Organization
Bluetooth® is a registered trademark of Bluetooth SIG.
Communication Modules
1. Introduction
Thank you for choosing MJK PROFIBUS communication module. We have
done our outmost to design and manufacture a high quality product that
should satisfy your requirements.
The MJK modem and communication modules is easy to install in MJK MagFlux, SuSix and Oxix units and to put into service. However, read this manual
first to learn more about the specifications, how to install and how to operate
the equipment.
The equipment must be handled and operated as instructed by the manufacturer, MJK Automation ApS, to ensure stable operation.
The MJK modem and communication modules can be obtained in several different versions supporting standard communication types and protocols like
PSTN, GSM, GPRS, RS 232, RS 485, Modbus RTU, Profibus PA and Bluetooth. This manual covers Modbus RS 485.
You can always contact your local representative or the MJK hot line for
advice and guidance:
• Tel.: +45 45 56 06 56 E-mail: mjk@mjk.com
Visit our web site at www.mjk.com to learn more about MJK Automation A/S,
our products and the people behind them.
1. Introduction
Profibus
1.1 MJK Profibus Communication Overview
Profibus
The Profibus communications module is transporting information from the
individual MJK instrument such as Magflux.
The firmware of the display unit will automatically recognize the mounted
communication module, and configuration menus will automatically be visible
allowing connection to a PLC unit and other units.
Profibus is also creating a simple way of connecting up to 4 MJK instruments
in a rapid communicating network, without additional equipment.
B
A
Shield
GND
Loop out Loop In
NC
Shield
Bt
B
A
At
Communication Modules
2. Profibus Communication Modules
Figure 1. Profibus Communication Module
2.1 Version Requirements
The following software, firmware and hardware versions (or higher) are minimum required for displays without an installed communication module:
• Profibus FW ver.: 845501-001
• Display HW ver.: 807056 (HW5)
• Display FW ver.; 841018-003
Communication Modules
2.2 Technical Specifications
Profibus Communications unit
MountingOn backside of display unit
Dimensions51 x 82 mm ( H x W)
ConnectorsTwo 5-position plugable screw terminal
Temperature-20 to +60 °C
LEDsLEDs for “Rx”, “Tx”, “3V3”, “µc” and “prof”
Power consumptionApprox. 0.75 VA
Com. typeRS 485
Baud rateUp to 12MB
ID offset
ProtocolModbus RTU
The corresponding GSD File allows 244Bytes reading and 244Bytes writing to
the converter.
(profibus address)1-125
2. Profibus Communication Modules
Communication Modules
2.3 Mouting PROFIBUS
1. Dismount screws
2. Remove back plate
3. Remove lid using screwdriver
Communication Modules
4. Align pins with contacts
5. Check all pins are in
place in the PROFIBUS
slot and placing for
screws
2. Profi bus Communication Modules
6. Secure module using 4
screws
Communication Modules
7. Ensure rubber protection
for cable are in place
8. Remount back and secure using the screws
Communication Modules
2. Profibus Communication Modules
Communication Modules
2.3.5 Mounting PROFIBUS on Shuttle
1. Remove front plate
2. Align connectors
Communication Modules
3. Push Profibus in place
4. Remount frontplate
2. Profibus Communication Modules
Communication Modules
2.4 LED Signals
LED signals
RX
TXindicating that the module sends data to display (Modbus Master)
3V3There is supply to the module from the display
profIndication of Profi bus status Off = No DP Exchange / on = DP Exchange
uC
OFFuC is not running
Indicating that the module receives data from the display (Modbus
Master)
Indication of the module’s status
(LED is lit for 1/4s and 1/4s break, end signifi ed by a break in 2s)
If the Profi bus is mounted in a Master-unit the break will leave the LED ON
If the Profi bus is mounted in a Slave-unit the break will leave the LED OFF
Status - LED signals (blinks per sequence)
1Profi bus data exchange OK
2Init Profi bus in progress
3Waiting for Profi bus parameter
4Waiting for Profi bus confi guration
5Basic hardware Okay, //5 error
10Profi bus Data exchange is not ready
11Profi bus not offl ine error
12Profi bus DP Error
30
Fatal Error in Profi bus hardware (Check connections and hardware. turn
off power else replace Profi bus module)
Display setup
Language
Set Clock
Factory settings
Display SW version
Bluetooth
Graphs
Profibus COM modul
Setup overview screen
Back Select OK
Profibus COM modul
ProfibusIDProfibusStatus
Back Select OK
Profibus ID
Set ID
----
Back Select OK
ProfibusStatus
Ok/Fail
BackSelectOK
Communication Modules
2.5 Confi guration Remarks
The connected units on the Profi bus COM module have unique assigned IDs
built as follows:
• COM module confi guration/setup is executed from the “Display Setup/
Profi bus COM module” menu (see below).
• The “Profi bus COM module” option in the display menu automatically
appears, when a communication module is connected to the display.
• Profi bus ID is the address for the Profi bus
2. Profi bus Communication Modules
Profi bus COM Module
Profi bus ID
FW Versio n
Counter s
Communication Modules
2.6 Connection Examples
2.6.1 One Connected Unit
This example illustrates connection, termination and ID confi guration of a
single unit with a communication module and a PLC.
PLC
Shield
Bt
Shi
B
eBltd
A
B
A
At
ASth
i
Shield
elBd
LoopoutLoopIn
B
AGND
A
NC
Loop out Loop In
GND
NC
ID settings
205547 Profi bus Default ID = 99
GND
Bt
B
A
At
Termination
Profi bus communication requires bus termination. If the PLC is terminated,
Unit #3 requires Connection between A to At, and B to Bt
If, on the other hand, the PLC is NOT terminated, Unit #1 must also have
Connection between A to At, and B to Bt
Communication Modules
2.6.2 Three Connected Units
This example illustrates connection, termination and ID configuration of three
units each with a communication module and a PLC.
Display unit
PLC
Shield
Bt
Shi
B
eBltd
A
B
A
At
ASthi
Shield
elBd
LoopoutLoopIn
B
AGND
A
NC
Loop out Loop In
GND
NC
Shield
Bt
Shi
B
eBltd
A
B
A
At
ASthi
Shield
elBd
LoopoutLoopIn
B
AGND
A
NC
Loop out Loop In
GND
NC
Shield
Bt
Shi
B
eBltd
A
B
A
At
ASthi
Shield
elBd
LoopoutLoopIn
B
AGND
A
NC
Loop out Loop In
GND
NC
GND
Bt
B
A
At
ID (Address) settings
Three Connected Units
Unit #1 Profibus ID=1
Unit #2 Profibus ID=2
Unit #3 Profibus ID=3
Default ID setting is 99
2. Profibus Communication Modules
Communication Modules
2.6.3 Three Connected Units and One Common Display
This example illustrates connection and ID confi guration of for example three
MagFlux units without display, one common, remote display unit with a communication module and a PLC unit.
Device 1
I.e. MagFlux, SuSix or Oxix
Device 2
I.e. MagFlux, SuSix or Oxix
Device 3
I.e. MagFlux, SuSix or Oxix
Display unit
Shield
Bt
Shi
B
eBltd
A
B
A
At
ASthi
Shield
elBd
LoopoutLoopIn
B
AGND
A
NC
Loop out Loop In
GND
NC
GND
Bt
B
A
At
PLC
ID settings
205547 Profi bus Default ID = 99
Termination
Profi bus communication requires Connection between A to At, and B to Bt
Communication Modules
3. Order Numbers
Order numberCommunication Module
205547Profi bus DP-V0 communications module
3. Order Numbers
Communication Modules
4. Register Lists
Profibus
“Offset Read
Default”
LowBHighBType #Status Com. ModulModbus adr.
01B16
23B16
45U16
67U16
89B16Device Status
Register nameExplanationsDevice measure-
Profibus module -
Control
Profibus module -
Status
Profibus module -
Modbus Rx Counter
Profibus module -
Modbus Tx Counter
Not implemted only reseved for
Future use!!!!!
“{ On = 1 & Off = 0 }
Bit 1 = Subnet(modbus) Rx Missing
“Display device status for subnet(modbus)
{Bit1 Device detected (Detected = 1)}
Alarm”
Subnet(modbus) RX Counter
Subnet(modbus) TX Counter
{Bit2 Device Error (Error on = 1)}
Bit 1..2 Device 1
Bit 3..4 Device 2
Bit 5..6 Device 3
Bit 7..8 Device 4
Reseved 9 - 16”
238239S16TemperatureTeperature (Error if not between -50° and 80°C)
TypeRegister
#Shuttle
S32
{Low}
S32
{High}
S32
{Low}
S32
{High}
name
Module
Status Error
bit 1-16
LevelLevel -2E9 - 2E9 [mm]
Distance to
surface
Explanations
0 = OFF, 1 = ON
Bit 1: Measurement OK (No delay)
Bit 2: Measurement Error (Inversed Measurement OK 1
min ON Delay)
Bit 3: Sensor Error (Inversed Measurement OK 10min
ON Delay)
Bit 4:Temperature Error (if not between -50° and 80° and
has 1min ON delay)
-
Distance to surface -2E9 - 2E9 [mm]
-
Communication Modules
Liability
MJK Automation A/S is liable to the common rules of Danish law on product liability. However, the liability is reduced to coverage of
our public liability insurance of products. To the extent where nothing else follows in lines of invariable rules of law, we are not liable for
loss of profits and working deficits or other indirect losses.
Changes
As our products are developed continuously, we reserve the right to make any alterations without prior notice.