Neptronic SKE4 series Bedienungsanleitung

SKE4-Modbus Guide-190110

SKE4 Steam Humidifier

Modbus Communication Module User Guide

SKE4 Steam Humidifier

Modbus Communication Module User Guide

www.neptronic.com

Page | 1

Introduction

The SKE4 Modbus Communication Module User Guide provides information for using Neptronic®communication

feature. The controller uses Modbus communication protocol over serial line in the RTU mode and provides a Modbus

network interface between client devices and Neptronic SKE4 devices.

The SKE4 Modbus Guide assumes that you are familiar with Modbus terminology.

The following are the requirements for Modbus:

Data Model. The SKE4 Steam Humidifier Modbus server data model uses only the Modbus Registers table.

Register Address:

oAs per protocol base (base 0); for PLC add 1 to protocol base.

oAs per holding register (base 400001).

Function Codes. The SKE4 Steam Humidifier Modbus server supports a limited function codes subset

comprising:

oRead Holding Registers (0x03)

oWrite Single Register (0x06)

oWrite Multiple Registers (0x10)

Exception Responses. The SKE4 Steam Humidifier Modbus server supports the following exception codes:

oIllegal data address

oIllegal data value

oSlave device busy

Serial Line. The SKE4 Steam Humidifier Modbus over serial line uses RTU transmission mode over a two-wire

configuration RS485 (EIA/TIA-485 standard) physical layer.

oThe physical layer can use fixed baud rate selection or automatic baud rate detection (default) as

per the Modbus Auto Baud Rate device menu item or holding register index 1.

oThe supported baud rates are 9600, 19200, 38400, and 57600.

oThe physical layer also supports variable parity control and stop bit configuration as per the Modbus

Comport Config device menu item or holding register index 2.

oIn auto baud rate configuration, if the device detects only consecutive bad frames (2 or more) for

one second with any given baud rate, it will reinitialize itself to the next baud rate.

Addressing. The SKE4 Steam Humidifier device only answers at the following address:

oThe device's unique address (1 to 246) that can be set through the device menu or through holding

SKE4 Steam Humidifier

Modbus Communication Module User Guide

www.neptronic.com

Page | 2

Modbus Registers

Table Glossary

Name

Description

Name

Description

Writable Register

ASCII

For registers containing ASCII (8-bit) characters

Read Only Register

MSB

Most Significant Byte

Unsigned

For range of values from 0 to 65,535, unless otherwise specified

LSB

Least Significant Byte

Signed

For range of values from -32,768 to 32,767, unless otherwise

specified

MSW

Most Significant Word

Bit String

For registers with multiple values using bit mask (example,

flags)

LSW

Least Significant Word

Modbus Registers Table

Protocol

Base

Holding

Description

Data Type

Units, Limits, State Texts

Writable

Default

Value

400001

Modbus Address and Product Type

Unsigned

MSB = Product type, not writable

LSB = Modbus Address (1 to 247), writable

400002

Device Baud Rate

Unsigned

Scale 100

0, 9600, 19200, 38400, and 57600, 0 = Auto

Baud Rate Detection Value/100 (e.g. 38400 baud

= 384)

19200

400003

Modbus Slave Communication Port

Configuration

Unsigned

0 = No parity, 2 Stop bits

1 = Even parity, 1 Stop bit

2 = Odd parity, 1 Stop bit

No parity,

2 Stops bits

400004

Product Name (characters 8 & 7)

ASCII

MSB = char 6, LSB = char 7

400005

Product Name (characters 6 & 5)

ASCII

MSB = char 4, LSB = char 5

400006

Product Name (characters 4 & 3)

ASCII

MSB = char 2, LSB = char 3

400007

Product Name (characters 2 & 1)

ASCII

MSB = char 0, LSB = char 1

SKE4 Steam Humidifier

Modbus Communication Module User Guide

www.neptronic.com

Page | 3

Protocol

Base

Holding

Description

Data Type

Units, Limits, State Texts

Writable

Default

Value

400008

Product Actual Firmware Version (in Integer

x100)

Unsigned

Scale 100

1 to 65535 (e.g. 100)

400009

Product Actual EEPROM Version (in Integer

x100)

Unsigned

Scale 100

1 to 65535 (e.g. 100)

2000

402001

Control Signal

Unsigned

Scale 1000

0 to 10500

Value x 1000 (e.g. 1V = 1000)

2001

402002

Room RH Signal

Unsigned

Scale 1000

0 to 10500

Value x 1000 (e.g. 1V = 1000)

2002

402003

Supply RH Signal

Unsigned

Scale 1000

0 to 10500

Value x 1000 (e.g. 1V = 1000)

2003

402004

Water Level Signal

Unsigned

Scale 1

0 to 30000

Value x 1 (e.g. 10Hz = 10)

2004

402005

Water Level Low Signal

Unsigned

Scale 1000

0 to 10000

Value x 1000 (e.g. 1V = 1000)

2005

402006

Water Level High Signal

Unsigned

Scale 1000

0 to 10000

Value x 1000 (e.g. 1V = 1000)

2006

402007

Water Temperature Signal

Unsigned

Scale 1000

0 to 10000

Value x 1000 (e.g. 1V = 1000)

2007

402008

Foam Signal

Unsigned

Scale 1000

0 to 10000

Value x 1000 (e.g. 1V = 1000)

2008

402009

SSR Temperature Signal

Unsigned

Scale 1000

0 to 10000

Value x 1000 (e.g. 1V = 1000)

2009

402010

Cabinet Temperature Signal

Unsigned

Scale 1000

0 to 10000

Value x 1000 (e.g. 1V = 1000)

2010

402011

Current Sensor 1 Signal

Unsigned

Scale 1000

0 to 3300

Value x 1000 (e.g. 1V = 1000)

SKE4 Steam Humidifier

Modbus Communication Module User Guide

www.neptronic.com

Page | 4

Protocol

Base

Holding

Description

Data Type

Units, Limits, State Texts

Writable

Default

Value

2011

402012

Current Sensor 2 Signal

Unsigned

Scale 1000

0 to 3300

Value x 1000 (e.g. 1V = 1000)

2012

402013

Board Temperature Signal

Unsigned

Scale 1000

0 to 10000

Value x 1000 (e.g. 1V = 1000)

2013

402014

Main Power Supply

Unsigned

Scale 10

0 to 400

Value x 10 (e.g. 1V = 10)

4000

404001

Power Output Feedback Signal

Unsigned

Scale 1000

0 to 10000

Value x 1000 (e.g. 1V = 1000)

4001

404002

Heater SSR Stage

Unsigned

Scale 100

0 to 10000

Value x 100 (e.g. 10% = 1000)

6000

406001

Control Input

Unsigned

Scale 100

0 to 10000

Value x 100 (e.g. 10% = 1000)

6001

406002

Room RH

Unsigned

Scale 100

0 to 10000

Value x 100 (e.g. 10% hum = 1000)

6002

406003

Supply High Limit RH

Unsigned

Scale 100

0 to 10000

Value x 100 (e.g. 10% hum = 1000)

6003

406004

Water Temperature Signal Min

Unsigned

Scale 1000

0 to 10000

Value x 1000 (e.g. 10V = 10000)

6004

406005

Water Temperature Signal Max

Unsigned

Scale 1000

0 to 10000

Value x 1000 (e.g. 10V = 10000)

3000

6005

406006

Water Temperature

Unsigned

Scale 100

0 to 12500

Value x 100 (e.g. 10C = 1000)

5000

6006

406007

Water Temperature Min

Unsigned

Scale 100

0 to 25000

Value x 100 (e.g. 10C = 1000)

6007

406008

Water Temperature Max

Unsigned

Scale 100

0 to 25000

Value x 100 (e.g. 10C = 1000)

12500

SKE4 Steam Humidifier

Modbus Communication Module User Guide

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Page | 5

Protocol

Base

Holding

Description

Data Type

Units, Limits, State Texts

Writable

Default

Value

6008

406009

Water Temperature Bias

Signed

Scale 100

-1000 to 1000

Value x 100 (e.g. 10C = 1000)

6009

406010

SSR Temperature

Signed

Scale 100

-2000 to 10000

Value x 100 (e.g. 10C = 1000)

6010

406011

Cabinet Temperature

Signed

Scale 100

-200 to 1000

Value x 100 (e.g. 1C = 100)

6011

406012

Current Sensor 1 (0)

Unsigned

Scale 100

0 to 15000

Value x 100 (e.g. 10A = 1000)

6012

406013

Current Sensor 1 (1)

0 to 15000

6013

406014

Current Sensor 2 (0)

Unsigned

Scale 100

0 to 15000

Value x 100 (e.g. 10A = 1000)

6014

406015

Current Sensor 2 (1)

0 to 15000

6015

406016

Board Temperature

Unsigned

Scale 100

0 to 10000

Value x 100 (e.g. 10C = 1000)

6016

406017

Power Output Feedback

Unsigned

Scale 100

0 to 10000

Value x 100 (e.g. 10% = 1000)

6017

406018

Water Level

Unsigned

Scale 10

0 to 2000

Value x 10 (e.g. 10% = 100)

780

6018

406019

Water Probe Low Pos Reading

Unsigned

Scale 1

0 to 30000

Value x 1 (e.g. 1 Hz = 1)

30000

6019

406020

Water Probe High Pos Reading

Unsigned

Scale 1

0 to 30000

Value x 1 (e.g. 1 Hz = 1)

30000

6020

406021

Water Probe Abs Low Pos Reading

Unsigned

Scale 1

0 to 30000

Value x 1 (e.g. 1 Hz = 1)

30000

6021

406022

Water Probe Abs High Pos Reading

Unsigned

Scale 1

0 to 30000

Value x 1 (e.g. 1 Hz = 1)

30000

SKE4 Steam Humidifier

Modbus Communication Module User Guide

www.neptronic.com

Page | 6

Protocol

Base

Holding

Description

Data Type

Units, Limits, State Texts

Writable

Default

Value

6022

406023

Room RH Network Reading

Unsigned

Scale 100

0 to 10000

Value x 100 (e.g. 10% hum = 1000)

6023

406024

Room RH Setpoint

Unsigned

Scale 100

0 to 10000

Value x 100 (e.g. 10% hum = 1000)

4000

6024

406025

Room RH Unoccupied Setpoint

Unsigned

Scale 100

0 to 10000

Value x 100 (e.g. 10% hum = 1000)

3000

6025

406026

Room RH Vacant Setpoint

Unsigned

Scale 100

0 to 10000

Value x 100 (e.g. 10% hum = 1000)

2000

6026

406027

Room Demand

Unsigned

Scale 100

0 to 10000

Value x 100 (e.g. 10% = 1000)

6027

406028

Supply High Limit Network Reading

Unsigned

Scale 100

0 to 10000

Value x 100 (e.g. 10% hum = 1000)

6028

406029

Supply High Limit Setpoint

Unsigned

Scale 100

0 to 10000

Value x 100 (e.g. 10% hum = 1000)

8000

6029

406030

Supply High Limit Demand

Unsigned

Scale 100

0 to 10000

Value x 100 (e.g. 10% = 1000)

6030

406031

Humidity Control Network Demand

Unsigned

Scale 100

0 to 10000

Value x 100 (e.g. 10% = 1000)

6031

406032

Humidity Control Network High Limit

Unsigned

Scale 100

0 to 10000

Value x 100 (e.g. 10% = 1000)

10000

6032

406033

Humidity Demand

Unsigned

Scale 100

0 to 10000

Value x 100 (e.g. 10% = 1000)

6033

406034

SDU Fan Off Delay

Unsigned

Scale 1

5 to 20

Value x 1 (e.g. 5min = 5)

6034

406035

Humidity Demand Low Dead Band (0)

Unsigned

Scale 100

0 to 10000

Value x 100 (e.g. 10% = 1000)

100

6035

406036

Humidity Demand Low Dead Band (1)

0 to 10000

Value x 100 (e.g. 10% = 1000)

SKE4 Steam Humidifier

Modbus Communication Module User Guide

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Page | 7

Protocol

Base

Holding

Description

Data Type

Units, Limits, State Texts

Writable

Default

Value

6036

406037

Control Network Timeout (0)

Unsigned

Scale 1

1 to 15

Value x 1 (e.g. 5min = 5)

6037

406038

Control Network Timeout (1)

1 to 15

Value x 1 (e.g. 5min = 5)

6038

406039

System Power Output

Unsigned

Scale 100

0 to 10000

Value x 100 (e.g. 10% = 1000)

6039

406040

System Steam Capacity

Unsigned

Scale 10

0 to 30000

Value x 10 (e.g 10 kg/h = 100)

6040

406041

Boiler Demand

Unsigned

Scale 100

0 to 10000

Value x 100 (e.g. 10% = 1000)

6041

406042

Boiler Capacity

Unsigned

Scale 10

0 to 30000

Value x 10 (e.g. 10kg/hr = 100)

160

6042

406043

Boiler Power Output

Unsigned

Scale 100

0 to 10000

Value x 100 (e.g. 10% = 1000)

6043

406044

Boiler Run Time (0)

Unsigned

Scale 100

0 to 2147483647

Value x 100 (e.g. 10h = 1000)

6044

406045

Boiler Run Time (1)

0 to 2147483647

6045

406046

Boiler Run Time (2)

0 to 2147483647

6046

406047

Boiler Run Time (3)

0 to 2147483647

6047

406048

Boiler On Time (0)

Unsigned

Scale 100

0 to 2147483647

Value x 100 (e.g. 10h = 1000)

6048

406049

Boiler On Time (1)

0 to 2147483647

6049

406050

Boiler On Time (2)

0 to 2147483647

6050

406051

Boiler On Time (3)

0 to 2147483647

6051

406052

Boiler Service Run Time (0)

Unsigned

Scale 100

0 to 2147483647

Value x 100 (e.g. 10h = 1000)

SKE4 Steam Humidifier

Modbus Communication Module User Guide

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Page | 8

Protocol

Base

Holding

Description

Data Type

Units, Limits, State Texts

Writable

Default

Value

6052

406053

Boiler Service Run Time (1)

0 to 2147483647

6053

406054

Boiler Service Run Time (2)

0 to 2147483647

6054

406055

Boiler Service Run Time (3)

0 to 2147483647

6055

406056

Boiler Service On Time (0)

Unsigned

Scale 100

0 to 2147483647

Value x 100 (e.g. 10h = 1000)

6056

406057

Boiler Service On Time (1)

0 to 2147483647

6057

406058

Boiler Service On Time (2)

0 to 2147483647

6058

406059

Boiler Service On Time (3)

0 to 2147483647

6059

406060

Boiler Minimum Steam Output

Unsigned

Scale 1

1 to 25

Value x 1 (e.g. 1% = 1)

6060

406061

Boiler Drain Interval

Unsigned

Scale 1

0 to 24

Value x 1 (e.g. 1h = 1)

6061

406062

Boiler Drain Volume

Unsigned

Scale 1

25 to 100

Value x 1 (e.g. 1% = 1)

100

6062

406063

Boiler Max Steam Output

Unsigned

Scale 1

0 to 100

Value x 1 (e.g. 1% = 1)

100

6063

406064

Boiler Idle Time Drain

Unsigned

Scale 1

0 to 72

Value x 1 (e.g. 1h = 1)

6064

406065

Boiler Idle Temperature Setpoint

Unsigned

Scale 1

0 to 60

Value x 1 (e.g. 1°C = 1)

6065

406066

Boiler Blowdown Rate

Unsigned

Scale 1

0 to 100

Value x 1 (e.g. 1% = 1)

6066

406067

Boiler Service Interval

Unsigned

Scale 1

1000 to 3000

Value x 1 (e.g. 1h = 1)

1000

SKE4 Steam Humidifier

Modbus Communication Module User Guide

www.neptronic.com

Page | 9

Protocol

Base

Holding

Description

Data Type

Units, Limits, State Texts

Writable

Default

Value

6067

406068

Boiler Idle Tank Rinse Interval

Unsigned

Scale 1

1 to 7

Value x 1 (e.g. 1 day = 1)

6068

406069

Boiler Anti-Freeze Drain (0)

Signed

Scale 100

-4000 to 10000

Value x 100 (e.g. 1C = 100)

100

6069

406070

Boiler Anti-Freeze Drain (1)

-4000 to 10000

Value x 100 (e.g. 1C = 100)

6070

406071

Boiler Anti-Freeze Keep Warm Setpoint (0)

Signed

Scale 100

-4000 to 10000

Value x 100 (e.g. 1C = 100)

3000

6071

406072

Boiler Anti-Freeze Keep Warm Setpoint (1)

-4000 to 10000

Value x 100 (e.g. 1C = 100)

6072

406073

Boiler Anti-Freeze Keep Warm (0)

Signed

Scale 100

-4000 to 10000

Value x 100 (e.g. 1C = 100)

1000

6073

406074

Boiler Anti-Freeze Keep Warm (1)

-4000 to 10000

Value x 100 (e.g. 1C = 100)

6074

406075

HRL Temperature

Signed

Scale 100

-4000 to 26000

Value x 100 (e.g. 1C = 100)

6075

406076

HRL Humidity

Unsigned

Scale 100

0 to 10000

Value x 100 (e.g. 1% =100)

10000

410001

Air Flow

Unsigned

Scale 1

0 = Closed

1 = Open

Closed

10001

410002

Supply High Limit

Unsigned

Scale 1

0 = Closed

1 = Open

Closed

10002

410003

Interlock

Unsigned

Scale 1

0 = Closed

1 = Open

Closed

10003

410004

Binary External Demand

Unsigned

Scale 1

0 = 0%

1 = 100%

10004

410005

Water Leak Detection

Unsigned

Scale 1

0 = Ok

1 = Leak

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