Xylem 205546 User Manual

Modbus Communication Modules

Modbus Communication Modules

for Displays

Order no. 205546

Modbus and RS 485 Communication Module

EN 6.81 Modbus Communication Module 205546 Manual 1212

Manual

1

Modbus Communication Modules

Table of Contents

1. Introduction 3

2. Communication Modules 4

2.1 Modbus and RS 485 Communication Module . . . . . . . . . . . . . . 4

2.1.1 Version Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

2.1.2 Technical Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

2.1.3 Physical mounting of Modbus module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

2.1.4 Configuration Remarks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

2.1.5 Connection Examples . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

2.1.5.1 One Connected Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

2.1.5.2 Three Connected Units . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

2.1.5.3 Three Connected Units and One Common Display . . . . . . . . . . . . . . . . . . . 14

3. Order Numbers 15

4. Register Lists 16

4.1 MagFlux Register List . . . . . . . . . . . . . . . . . . . . . . . . . . 16

4.2 Oxix / SuSix Register List . . . . . . . . . . . . . . . . . . . . . . . . 21

4.3 mA-Bus Converter List . . . . . . . . . . . . . . . . . . . . . . . . . . 25

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.

EN 6.81 Modbus Communication Module 205546 Manual 1212

2

Modbus Communication Modules

1. Introduction

Thank you for choosing MJK Modbus communication module. We have done
our utmost 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 A/S, 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 lines for
advice and guidance:

• Europe Tel.: [phone] E-mail: [e-mail]

• Denmark Tel.: [phone] E-mail: [e-mail]

• Norway Tel.: [phone] E-mail: [e-mail]

• Holland Tel.: [phone] E-mail: [e-mail]

• USA Tel.: [phone] E-mail: [e-mail]

Visit our web sites at www.mjk.com to learn more about MJK Automation
A/S, our products and the people behind them.

MJK Automation A/S is a Xylem brand.

1. Introduction

3

Modbus Communication Modules

2. Communication Modules

2.1 Modbus and RS 485 Communication Module

PCB no.: 510327-xxx
Communication RS485

GND

3V3

Figure 1. Modbus and RS 485 Communication Module

2.1.1 Version Requirements

The following software, firmware and hardware versions (or higher) are re­quired for displays without an installed communication module:

• Converter HW ver.: 807000

• Converter FW ver.: 842009-001

• Display HW ver.: 807056

• Display FW ver.; 841018-000

• Text file ver.: 841513-011

• MJK-Field Link ver.: 840110-48

Termination

ON

OFF

GNDB

GND

RS485

B

A

GND

5V

RTS

GND

Rx
Tx
3V3

5V5

EN 6.81 Modbus Communication Module 205546 Manual 1212

4

Modbus Communication Modules

2.1.2 Technical Specifications

Specification Description

Mounting With 4 screws on transmitter’s I/O board

Protection IP 20

Dimensions 51 x 82 mm ( H x W)

Connectors One 5-position plugable screw terminal and one 20-pin bus

connector

Temperature -20 to +60 °C

Settings One “Termination” dip switch

LEDs White LEDs for “5V”, “Rx”, “Tx” and “3V3”

Power consump. Approx. 0.18 VA

Com. type RS 485 asynchronous, half duplex

Baud rate 300, 1200, 4800, 9600, 19200, 38400, 57600, 115200

Parity Even, odd, none

Stop bits 1 , 2

Modbus ID offset 0 - 240

Protocol Modbus RTU

Table 1. Specifications - Modbus and RS 485 Communication Module

2. Communication Modules

5

Modbus Communication Modules

2.1.3 Physical mounting of Modbus module

1. Dismount screws

2. Remove back plate

EN 6.81 Modbus Communication Module 205546 Manual 1212

3. Remove lid using a
screwdriver

6

Modbus Communication Modules

4. Align pins with contacts

5. Check all pins is in place
in the Modbus slot and
check placing for screws

2. Communication Modules

6. Secure module using 4
screws

7

Modbus Communication Modules

7. Ensure all 4 screws are
in place

8. Make sure the rubber
protection for cable is in
place

EN 6.81 Modbus Communication Module 205546 Manual 1212

9. Remount the back using
the 3 screws

8

Modbus Communication Modules

10. Terminal should be “ON” if the display is last or only in chain

2. Communication Modules

9

Modbus Communication Modules

2.1.4 Configuration Remarks

• The connected units on the Modbus have unique assigned IDs built as
follows:
SRO modbus ID = Instrument modbus ID + modbus ID offset

• ID 0 (broadcast) cannot be used (a broadcast is used for synchronous
transmission of messages to all connected units).

• Available registers are limited to the measured value registers of the indi­vidual units. Configuration settings cannot be accessed.

• The PLC time-out on the Modbus must be set to 5 seconds from the
SCADA system or the master PLC unit.

• COM module configuration/setup is executed from the “Display Setup/
Communication” menu (see below).

• The “Communication” option in the display menu automatically appears,
when a communication module is connected to the display.

Display Setup

Language
Set Clock
Modbus
Factory settings
Display SW version
Communication

Back Select OK

Communication

Baud rate
Parity
Stop bits
Modbus ID offset

Back Select OK

Baud rate
300
1200
4800
9600
19200
38400
57600
115200

Back Select OK

Default:

9600

Figure 2. COM Module Configuration

EN 6.81 Modbus Communication Module 205546 Manual 1212

Parity
Even
Odd
None

Back Select OK

Stop bits
1
2

Back Select OK

Modbus ID offset

000

Back Select >

10

Even

1

000

Modbus Communication Modules

2.1.5 Connection Examples

2.1.5.1 One Connected Unit

This example illustrates connection, termination and ID configuration of a
single unit with a communication module and a PLC.

Termination

OFF

GND

B

RS485

A

GND

GND

5V5

ON

GND

B

A

GND

GND

Termination

OFF

ON

PLC

B

A

GND

PE

Unit #1

PCB no.: 510327-xxx
Communication RS485

GND

GNDB

RS485

5V

RTS
Rx
Tx
3V3

3V3

Figure 3. One Connected Unit

Exampe ID settings

If the connected unit has ID=1 (seen from the com module), and the com
module has ID offset=200, the SRO Modbus ID is “201” (200 + 1, seen from
the PLC).

Termination

Modbus RS 485 communication requires bus termination. Therefore the con­nected COM module’s termination dip switch is set in “ON” position.

2. Communication Modules

11

Modbus Communication Modules

2.1.5.2 Three Connected Units

This example illustrates connection, termination and ID configuration of three
units each with a communication module and a PLC.

Unit #1

Unit #2

Unit #3

PCB no.: 510327-xxx
Communication RS485

PCB no.: 510327-xxx
Communication RS485

Termination

Termination

ON

OFF

GND

GNDB

GND

GND

RS485

B

RS485

A

B

GND

5V

RTS

GND

Rx
Tx
3V3

A

3V3

5V5

GND

GND

Termination

Termination

ON

OFF

GND

GNDB

GND

GND

RS485

B

RS485

A

B

GND

5V

RTS

GND

Rx
Tx
3V3

A

3V3

5V5

OFF

OFF

ON

ON

PLC

B

A

GND

PE

GND

GND

Termination

OFF

ON

PCB no.: 510327-xxx
Communication RS485

Termination

ON

OFF

GND

GNDB

GND

GND

RS485

B

RS485

A

B

GND

5V

RTS

GND

Rx
Tx
3V3

A

3V3

5V5

GND

GND

Figure 4. Three Connected Units

EN 6.81 Modbus Communication Module 205546 Manual 1212

12

Modbus Communication Modules

Exampe ID settings

Unit #1 ID=1 and COM module offset ID=1 -> SRO ID=2 (1 + 1)

Unit #2 ID=1 and COM module offset ID=2 -> SRO ID=3 (1 + 2)

Unit #3 ID=4 and COM module offset ID=3 -> SRO ID=7 (4 + 3)

Termination

Modbus RS 485 communication requires bus termination. If the PLC is termi­nated, unit #1 must be set in “OFF” position, unit #2 in “OFF” position and unit
#3 in “ON” position.

If, on the other hand, the PLC is NOT terminated, unit #1 must be set in “ON”
position.

2. Communication Modules

13

Modbus Communication Modules

2.1.5.3 Three Connected Units and One Common Display

This example illustrates connection and ID configuration of for example three
MagFlux units without display, one common, remote display unit with a com­munication module and a PLC unit.

MagFlux #1

MagFlux #2

MagFlux #3

Display unit
with COM module

PCB no.: 510327-xxx
Communication RS485

Termination

ON

OFF

Termination

ON

OFF

GND

GNDB

GND

GND

RS485

B

RS485

A

B

GND

5V

RTS

GND

Rx
Tx
3V3

A

3V3

5V5

GND

GND

PLC

B

A

GND

PE

Figure 5. Three Connected Units and One Common Display Unit

Exampe ID settings

If Magflux #1 has ID=1 (seen from the com module), and the com module has
ID offset=100, the SRO Modbus ID is 101 (100 + 1) seen from the PLC.

Likewise the other MagFlux units with ID=2 and ID=3 would have the SRO
Modbus IDs 102 and 103.

EN 6.81 Modbus Communication Module 205546 Manual 1212

14

Modbus Communication Modules

3. Order Numbers

Order number Communication Module

205546 MODBUS and RS 485 communications module

3. Order Numbers

15

Modbus Communication Modules

4. Register Lists

4.1 MagFlux Register List

• Date: 2009-03-10

• Firmware: 842009-001

• Protocol: Modbus RTU

• Transfer rate: 9600 baud

• Format for serial com: 1-Startbit, 8-Databits, 1-Parity (Even), 1-Stopbit

• Password: OFF (default)

• To set up the converter, use the MagFlux Display Unit

When a MagFlux Converter is connected to an external master, for example a
PLC or an HMI interface, the MagFlux Display Unit can not be used simulta­neous on the RS 485 communication port.

Support only Read is ”func. 03 (0x03) Read Holding Registers” or ”func. 04
(0x04) Read Input Registers” and write ”func. 16 (0x10) Write Multiple regis­ters”

Register
address

Flow now

600 Flow now F32 {low} None Read-only Flow now [m3/sec]

601

Totalizer Forward

604

605 Total forward flow 1 - 2 U64{2} - Read-only Forward total [mm3]

606 Total forward flow 1 - 3 U64{3} - Read-only Forward total [mm3]

607

608

609

Totalizer Reverse

610

611 Total reverse flow 1 - 2 U64{2} - Read-only Reverse total [mm3]

EN 6.81 Modbus Communication Module 205546 Manual 1212

Register
name

Flow now F32

Total forward flow 1 -
LS word

Total forward flow 1 -
MS word

Resetable total forward
flow 2 - value

Resetable total forward
flow 2 - value

Total reverse flow 1 -
LS word

Type Security

{high}

U64{1} None Read-only

U64{4} - Read-only

U32 {low} Password Read/

U32
{high}

U64{1} None Read-only

- -

- Read/

16

Read/
Write

Reset

Reset

Comments

Flow now [m3/sec]

Forward total [mm3]

Forward total [mm3]

Forward total [liter]

Forward total [liter]

Reverse total [mm3]

Modbus Communication Modules

Register
address

612

613

614

615

Totalizer Sum

616

617 Total sum flow 1 - 2 S64{2} - Read-only See above

618 Total sum flow 1 - 3 S64{3} - Read-only See above

619

620

621

Batch Counter 1

627

628

629

630

631

632

Batch Counter 2

633

634

635

636

Register
name

Total reverse flow 1 - 3 U64{3} - Read-only

Total reverse flow1 -
MS word

Resetable total reverse
flow 2 - value

Resetable total reverse
flow 2 - value

Total sum flow 1 -
LS word

Total sum flow 1 - MS
word

Resetable total sum flow 2

- value

Resetable total sum flow 2

- value

Batch counter 1 -
Batch count

See above U32

Batch counter 1 - value
batch now

See above F32

Batch counter 1 - value
batch missing

See above F32

Batch counter 2 - batch
count

See above U32

Batch counter 2 - value
batch now

See above F32

Type Security

U64{4} - Read-only

U32 {low} Password Read/

U32
{high}

S64{1} None Read-only

S64{4} - Read-only

S32 {low} Password Read/

S32
{high}

U32 {low} Pass-

{high}

F32 {low} None Read-only

{high}

F32 {low} None Read-only

{high}

U32 {low} Pass-

{high}

F32 {low} None Read-only

{high}

- Read/

- Read/

word*

- -

- -

- -

word*

- -

- -

Read/
Write

Reset

Reset

Reset

Reset

R/Reset

R/Reset

Comments

Reverse total [mm3]

Reverse total [mm3]

Reverse total [liter]

Reverse total [liter]

Sum total [mm3]
Sum total= (Forward +
Reverse)
{exsample. 12 + (-2)
=10 mm3}

See above

Sum total [liter]

Sum total [liter]

(* = password can
be disabled for this
setting )

(* = password can
be disabled for this
setting )

4. Register Lists

17

Modbus Communication Modules

Register
address

637

638

Status I/O Bits

Register
address

1001

Register
address

1002

Register
name

Batch counter 2 - value
batch missing

See above F32

Register name Type Security Read/Write

System error bit 1-16 B16 None Read-only

Bits

System error bit { on = 1 & off = 0 } (to force zero write 12(0x0C) in address 5120 )

Bit 1 = Factory reset has occurred (some settings have changed)
Bit 2 = Eeprom write error (see log for details)
Bit 3 = Flow totalizer eeprom error (None-resetable counter may be invalid in Eprom)
Bit 4 = Sensor setting error (some settings are invalid or changed)
Bit 5 = Counter output Forward Pulsoverflow (too low puls volume)
Bit 6 = Counter output Reverse Pulsoverflow (too low puls volume)
Bit 7 = Batch1 counter overflow
Bit 8 = Batch2 counter overflow
Bit 9 = Flow totalizer overflow (none-resetable counter may be invalid in Eprom)
Bit 10-16 = Reserved and read-value is 0 (zero)

Register name Type Security

Alarm / sensor error B16 None Read-only

Bits

Status bit resetable { On = 1 & Off = 0 }

Bit 1 = empty pipe (see settings for possible enable / disable and on delay)
Bit 2 = low flow (see settings for possible enable / disable and on delay)
Bit 3 = high flow (see settings for possible enable / disable and on delay)
Bit 4 = mA flow error (flow is over or under possibel output)
Bit 5 = output coil error (see settings for possible enable / disable and on delay)
Bit 6 = sensor error (see settings for possible enable / disable and on delay)
Bit 7 = mA out not connected (see settings for possible enable / disable and on delay)
Bit 8 = Input over range error (see settings for possible enable / disable and on delay)
Bits 9-16 = Reserved and read-value is 0 (zero)

Type Security

F32 {low} None Read-only

- -

{high}

Read/
Write

Comments

Read/Write

Register
address

1003

EN 6.81 Modbus Communication Module 205546 Manual 1212

Register name Type Security

Status bits (Part 1) B16 None Read-only

Bits

Bit 1 = batch counter 1 - batch is ended = 1 / running = 0
Bit 2 = batch counter 2 - batch is ended = 1 / running = 0
Bit 3 = batch counter 1 - too big adaptive batch error = 1 / no error = 0
Bit 4 = batch counter 2 - too big adaptive batch error = 1 / no error = 0
Bits 5-16 = reserved

Read/Write

18

Modbus Communication Modules

Register
address

1004

Login

5000

5001

5002

5003

5004 Not in use U16 None None

5005 Not in use U16 None None

Batch Counter 1

6703

6704

6705

6706

6707

6708

6709

6710

6711

Batch Counter 2

6753

6754

Register name Type Security

Status bits (Part 2) B16 None Read-only

Bits

Bit 1 = flow direction bit - forward flow = 0 / reverse flow = 1 (see settings for possible delay)
Bit 2 = flow direction bit - A = 0 / B = 1 (see settings for possible delay)
Bits 3-16 = reserved and read-value is 0 (zero)

Login - value U16 None Read/

Min. U16 None Read-

Max. U16 None Read-

Login status ­value

Stop / Start /
Pause Manual
Batch - value

Min. U16 None Read-

Max. U16 None Read-

Batch stop
volume - value

See above F32

Min. F32

See above F32

Max. F32

See above F32

Stop / Start /
Pause Manual
Batch - value

Min. U16 None Read-

U16 None Read/

U16 None R/W

F32
{low}

{high}

{low}

{high}

{low}

{high}

U16 None Read/

Pass­word*

- -

None Read-

- -

None Read-

- -

Write

only

only

Write

only

only

Read/
Write

only

only

Write

only

Read/Write

Write = 0 or 65535 to logout

0

65.535

Login status
read = { 65535 = lockout mode - 0 = no
code - 1 = code accepted }

Stop / start / pause start manual batch
0 = stop
1 = start
2 = pause

0

2

[m3] (* = password can be disabled for
this setting )

Stop / start / pause start manual batch
0 = stop
1 = start
2 = pause “

0

4. Register Lists

19

Modbus Communication Modules

6755

6756

6757

6758

6759

6760

6761

Max. U16 None Read-

Batch stop
volume - value

See above F32

Min. F32

See above F32

Max. F32

See above F32

F32
{low}

{high}

{low}

{high}

{low}

{high}

Pass­word*

- -

None Read-

- -

None Read-

- -

Table 2. MagFlux Register List

only

Read/
Write

only

only

2

[m3] (* = password can be disabled for
this setting )

EN 6.81 Modbus Communication Module 205546 Manual 1212

20

Modbus Communication Modules

4.2 Oxix / SuSix Register List

• Date: 2009-03-10

• Firmware: 846001

• Protocol: Modbus RTU

• Transfer rate: 9600 baud

• Format for serial com: 1-Startbit, 8-Databits, 1-Parity (Even), 1-Stopbit

• Password: OFF (default)

• To set up the converter, use the SuSix/Oxix Display Unit

When a SuSix/Oxix Converter is connected to an external master, for example
a PLC or an HMI interface, the SuSix/Oxix Display Unit can not be used
simultaneous on the RS 485 communication port.

Support only Read is ”func. 03 (0x03) Read Holding Registers” or ”func. 04
(0x04) Read Input Registers” and write ”func. 16 (0x10) Write Multiple regis­ters”

Reg.
addr.

606

607

608

609

4. Register Lists

Reg.
name

Read­ing

- prim

- xtra

See
above

Read­ing

- sec

- xtra

See
above

Type

F32
{LW}

F32
{HW}

F32
{LW}

F32
{HW}

Se-

Read/

curity

Write

None Read-

only

None Read-

only

Oxix SuSix

Primary value (dissolved
oxygen) [unit is setting
dependent]

See above

Secondary value [de­grees C]

See above

21

Primary value (turbidity /
solid) [unit is setting-de­pendent]

See above

Secondary value standard
deviation turbidity / solid [%]

See above

Modbus Communication Modules

Status I/O Bits

Register
address

1001

Register name Type Security Read/Write

System error bit (alarm) B16 Password Read/Reset

Bits

Oxix

System error bit { on = 1 & off = 0 }

Bit 1 = Factory reset has occurred (some settings have changed - check all used settings)
Bit 2 = Eeprom write error (see log for details)
Bit 3 = Sensor setting error (some settings are invalid or changed)
Bit 4 = System error in eventlog (log in eventlog for details)
Bit 5 = Current out not connected (If current out is not used, deactivate to stop pop-up)
Bit 6 = Primary measurement is over or under settings for current
Bits 7-16 = Reseved and read-value is 0 (zero)

SuSix

System error bit { on = 1 & off = 0 }

Bit 1 = Factory reset has occurred (some settings have changed - check all used settings)
Bit 2 = Eeprom write error (See log for details)
Bit 3 = Sensor setting error (some settings are invalid or changed)
Bit 4 = System error in eventlog (log in eventlog for details)
Bit 5 = Current out not connected (if current out is not used, deactivate to stop pop-up)
Bit 6 = Primary measurement is over or under settings for current
Bits 7-16 = Reseved and read-value is 0 (zero)

Register
address

1002

EN 6.81 Modbus Communication Module 205546 Manual 1212

Register name Type Security Read/Write

System alarm 1 B16 None Read-only

Bits

Oxix

Status bit { on = 1 & off = 0 }

Bit 1 = reseved
Bit 2 = reseved
Bit 3 = reseved
Bit 4 = primary value - low alarm active
Bit 5 = primary value - high alarm active
Bits 6-16 = reseved and read-value is 0 (zero)

SuSix

Status bit { on = 1 & off = 0 }

Bit 1 = reseved
Bit 2 = reseved
Bit 3 = reseved
Bit 4 = primary value low - alarm active
Bit 5 = primary value high - alarm active
Bits 6-16 = reseved and read-value is 0 (zero)

22

Modbus Communication Modules

Status I/O Bits

Register
address

1003

Register name Type Security Read/Write

Sensor error (Alarm) B16 None Read-only

Bits

Oxix

Status bit { on = 1 & off = 0 }

Bit 1 = sensor - replace sensor
Bit 2 = sensor - fix error / redo calibration point or clear all points and redo calibration
Bit 3 = sensor - temperature error (thermistor is damaged)
Bit 4 = sensor - check sensor cable
Bit 5 = sensor - check sensor wiper
Bit 6 = sensor - probe polluted => clean - if message is repeated, return probe
Bit 7 = sensor - main photo diode saturated (circuit or sensor coating damaged)
Bit 8 = sensor - main photo diode negative (excessive electrical noise or damage)
Bit 9 = sensor - reference photo diode saturated (same causes as bit 7)
Bit 10 = sensor - reference photo diode negative (same causes as bit 8)
Bit 11 = reseved - read-value is 0 (zero)
Bit 12 = reseved - read-value is 0 (zero)
Bit 13 = reseved - read-value is 0 (zero)
Bit 14 = reseved - read-value is 0 (zero)
Bit 15 = sensor - supply is to high / low. Check sensor connection
Bit 16 = sensor - temperature error (temperature is out of range)

SuSix

Status bit { on = 1 & off = 0 }

Bit 1 = sensor - replace sensor
Bit 2 = sensor - fix error / redo calibration point or clear all points and redo calibration
Bit 3 = sensor - is not in solid mode - choose a unit of solid type
Bit 4 = sensor - check sensor cable
Bit 5 = sensor - check sensor wiper
Bit 6 = sensor - probe polluted => clean - if message is repeated, return probe
Bit 7 = sensor - turbidity value out of range (higher then 4000 NTU) - only implemented to
display unexpected error
Bit 8 = sensor - calibration insufficient - make another calibration on lower solid test sample
Bit 9 = sensor - calibration insufficient - make another calibration on higher solid test sample
Bit 10 = sensor - overflow - clean sensor / or check range and ensure that probe is
used to measure
Bit 11 = sensor - offset error (only implemented to display unexpected error
Bit 12 = sensor - measuring start failed - please try again
Bit 13 = sensor - measuring timeout - try again
Bit 14 = sensor - measuring adjustment missing
Bit 15 = sensor - supply is to high / low. Check sensor connection
Bit 16 = reseved and read-value is 0 (zero)

4. Register Lists

23

Modbus Communication Modules

Status I/O Bits

Register
address

1004

Login

Reg.
addr.

5000

5001

5002

5003

5004

5005

Register name Type Security Read/Write

Status no. 1 B16 None Read-only

Bits

Oxix

Bit 1 = converter has experienced a software or hardware reset
(expected if sensor number has been changed or factory setting is reloaded)
Bit 2 = system error alarm (see settings for possible enable / disable and on delay)
Bit 3 = sensor error alarm (see settings for possible enable / disable and on delay)
Bit 4 = sensor autodetect type is running - normal if sensor com error is detected x times
Bit 5 = hold of measurment value (normal for a short time)
Bit 6 = sensor cleaning in progress
Bit 7 = limit control

SuSix

Status bit { on = 1 & off = 0 }
Bit 1 = converter has experience a software or hardware reset
(expected if sensor number has been changed or factory setting is reloaded)
Bit 2 = system error alarm (see settings for possible enable / disable and on delay)
Bit 3 = sensor error alarm (see settings for possible enable / disable and on delay)
Bit 4 = sensor autodetect type is running - normal if sensor com error is detected x times
Bit 5 = hold of measurment value (normal for a short time)
Bit 6 = sensor cleaning in progress
Bit 7 = limit control

Reg.
name

Login ­Value

Min. U16 None Read-

Max. U16 None Read-

Login
status

- value

Not in
use

Not in
use

Se­cu­rity

Read/
Write

Write

only

only

Write

Type

U16 None Read/

U16 None Read/

U16 None None

U16 None None

Oxix SuSix

Write = 0 or 65535 to
logout

0

65.535

Login status
Read = { 65535 = lockout
mode - 0 = no code -
1 = code accepted }

Write = 0 or 65535 to logout

0

65.535

Login status
Read = { 65535 = lockout
mode - 0 = no code -
1 = code accepted }

Table 3. Oxix and SuSix Register List

EN 6.81 Modbus Communication Module 205546 Manual 1212

24

Modbus Communication Modules

4.3 mA-Bus Converter List

• Date: 2008-06-11

• Firmware: 845001-003

• Protocol: Modbus RTU

• Transfer rate: 9600 baud

• Format for serial com: 1-Startbit, 8-Databits, 1-Parity (Even), 1-Stopbit

• Password: OFF (default)

• To set up the converter, use the Display Unit

When a mA-Bus Converter is connected to an external master, for example a PLC or an HMI interface, the
Display Unit can not be used simultaneous on the RS 485 communication port. Support only Read is ”func.
03 (0x03) Read Holding Registers” or ”func. 04 (0x04) Read Input Registers” and write ”func. 16 (0x10) Write
Multiple registers”

Reg.

Reg.

addr.

name

100 DI 3-1 status U16 None

200 Digital input Bit 1-16 U16

AI 1 Scaled value F32 {Low} None

300

301 - F32 {High}

302 AI 1 Unit U16

303 AI 1 Precision S16

304 AI 2 Scaled value F32 {Low} None

305 - F32 {High}

306 AI 2 Unit U16

307 AI 2 Precision S16

1001 System Error bit 1-16 U16

1002 Alarm Error 1 U16

1003 Alarm Error 2 U16

Type

Se­cu­rity

Read/
Write

4. Register Lists

25

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MJK Automation A/S

Modbus 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..

EN 6.81 Modbus Communication Module 205546 Manual 1212