Walchem W600 Operating Manual

W600/

W

900 Modbus

Instruction Manual

WAL C HE M, Iwaki America Inc.

Five Boynton Road Hopping Brook Park Holliston, MA 01746 USA :

TEL: [phone] WEB: www.walchem.com

Notice

© 2018 WALCHEM, Iwaki America Inc. (hereinafter “Walchem”)
5 Boynton Road, Holliston, MA 01746 USA
[phone]
All Rights Reserved
Printed in USA

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The information and descriptions contained herein are the property of WALCHEM. Such information and
descriptions may not be copied or reproduced by any means, or disseminated or distributed without the
express prior written permission of WALCHEM, 5 Boynton Road, Holliston, MA 01746.

This document is for information purposes only and is subject to change without notice.

Statement of Limited Warranty

WALCHEM warrants equipment of its manufacture, and bearing its identification to be free from defects in
workmanship and material for a period of 24 months for electronics and 12 months for mechanical parts and
electrodes from date of delivery from the factory or authorized distributor under normal use and service and
otherwise when such equipment is used in accordance with instructions furnished by WALCHEM and for the
purposes disclosed in writing at the time of purchase, if any. WALCHEM’s liability under this warranty shall
be limited to replacement or repair, F.O.B. Holliston, MA U.S.A. of any defective equipment or part which,
having been returned to WALCHEM, transportation charges prepaid, has been inspected and determined by
WALCHEM to be defective. Replaceable elastomeric parts and glass components are expendable and are not
covered by any warranty.

THIS WARRANTY IS IN LIEU OF ANY OTHER WARRANTY, EITHER EXPRESS OR IMPLIED, AS TO
DESCRIPTION, QUALITY, MERCHANTABILITY, FITNESS FOR ANY PARTICULAR PURPOSE OR USE,
OR ANY OTHER MATTER.

180676 Rev F
October 2018

Table of Contents

1.0 SCOPE ............................................................................................................................................................... 1

2.0 INTRODUCTION ................................................................................................................................................ 1

3.0 OVERVIEW ........................................................................................................................................................ 1

3.1 Modbus Settings ..................................................................................................................................................................... 2

4.0 MODBUS/TCP DRIVER ...................................................................................................................................... 2

4.1 Modbus/TCP Protocol ............................................................................................................................................................ 2

4.1.1 MBAP Header .................................................................................................................................................................... 2

4.1.2 Protocol Data Unit ............................................................................................................................................................. 3

4.1.3 Modbus/TCP Function Codes ............................................................................................................................................ 3

4.1.3.1 Function Code 1, Read Coils ..................................................................................................................................... 4

4.1.3.2 Function Code 2, Read Discrete Inputs .................................................................................................................... 4

4.1.3.3 Function Code 3, Read Holding Registers ................................................................................................................ 5

4.1.3.4 Function Code 4, Read Input Registers .................................................................................................................... 5

4.1.3.5 Function Code 5, Write Single Coil ........................................................................................................................... 6

4.1.3.6 Function Code 6, Write Single Holding Register ...................................................................................................... 6

4.1.3.7 Function Code 16, Write Multiple Holding Registers ............................................................................................... 7

4.1.4 Modbus/TCP Exception Error Codes .................................................................................................................................. 7

4.2 TCP/IP Interface ...................................................................................................................................................................... 8

4.3 Data Refresh ........................................................................................................................................................................... 8

4.4 Data Encoding ........................................................................................................................................................................ 8

4.4.1 Coils and Discrete Inputs ................................................................................................................................................... 8

4.4.1.1 Boolean .................................................................................................................................................................... 8

4.4.2 Holding Register and Input Registers ................................................................................................................................. 8

4.4.2.1 16-Bit Word (Boolean) ............................................................................................................................................. 8

4.4.2.2 16-Bit Word (Bitfield) ............................................................................................................................................... 9

4.4.2.3 16-Bit Word (Status) ................................................................................................................................................ 9

4.4.2.4 16-Bit Word (Integer) ............................................................................................................................................... 9

4.4.2.5 32-Bit Value (Integer) ............................................................................................................................................... 9

4.4.2.6 32-Bit Value (Float) .................................................................................................................................................. 9

4.4.2.7 32-Bit Inverse Data Format (Integer or Float) ........................................................................................................ 10

5.0 DATA DICTIONARY .......................................................................................................................................... 10

5.1 Addressing (0- or 1-Based) ................................................................................................................................................... 10

5.2 Address Maps ....................................................................................................................................................................... 10

5.2.1 W600 Controller – I/O Channel Address Maps ................................................................................................................ 11

5.2.2 W900 Controller – I/O Channel Address Maps ................................................................................................................ 12

5.2.3 Alternate Address Maps .................................................................................................................................................. 14

5.3 Type-Specific Address Map .................................................................................................................................................. 15

5.3.1 System Address Map ....................................................................................................................................................... 15

5.3.2 Network Address Map ..................................................................................................................................................... 16

5.3.3 Sensor Input Address Maps ............................................................................................................................................. 17

5.3.3.1 Sensor Input (all types except Analog Input Flowmeter) Address Map ................................................................. 17

5.3.3.2 Analog Input Flowmeter Address Map .................................................................................................................. 18

5.3.4 Digital Input Address Maps .............................................................................................................................................. 19

5.3.4.1 Digital Input / DI State Type Address Map ............................................................................................................. 19

5.3.4.2 Digital Input / Contacting Flow Meter Type Address Map ..................................................................................... 20

5.3.4.3 Digital Input / Paddlewheel Flow Meter Type Address Map ................................................................................. 21

5.3.4.4 Digital Input / DI Counter Type Address Map ........................................................................................................ 22

5.3.4.5 Digital Input / Flow Monitor Type Address Map .................................................................................................... 23

5.3.5 Virtual Input Address Maps ............................................................................................................................................. 24

5.3.5.1 Virtual Input / Calculation & Raw Value Type Address Map .................................................................................. 24

5.3.5.2 Virtual Input / Redundant Sensor Type Address Map ........................................................................................... 25

5.3.5.3 Virtual Input / Disturbance Type Address Map ..................................................................................................... 26

5.3.6 Relay Output Address Maps ............................................................................................................................................ 27

5.3.6.1 Relay Output / Manual Control Mode Address Map ............................................................................................. 27

5.3.6.2 Relay Output / On/Off & On/Off Disturbance Control Mode Address Map .......................................................... 28

5.3.6.3 Relay Output / Dual Setpoint Control Mode Address Map .................................................................................... 29

5.3.6.4 Relay Output / Time Proportional Control Mode Address Map ............................................................................ 30

5.3.6.5 Relay Output / Intermittent Sampling Control Mode Address Map ...................................................................... 31

5.3.6.6 Relay Output / Bleed And Feed Control Mode Address Map ................................................................................ 32

5.3.6.7 Relay Output / Bleed Then Feed Control Mode Address Map ............................................................................... 33

5.3.6.8 Relay Output / Flow Timer Control Mode Address Map ....................................................................................... 34

5.3.6.9 Relay Output / Counter Timer Control Mode Address Map .................................................................................. 35

5.3.6.10 Relay Output / Target PPM Control Mode Address Map ....................................................................................... 36

5.3.6.11 Relay Output / PPM By Volume Control Mode Address Map ................................................................................ 37

5.3.6.12 Relay Output / Flow Meter Ratio Control Mode Address Map .............................................................................. 38

5.3.6.13 Relay Output / Volumetric Blend Control Mode Address Map .............................................................................. 39

5.3.6.14 Relay Output / Percent Timer Control Mode Address Map ................................................................................... 40

5.3.6.15 Relay Output / Event Timer Control Mode Address Map ...................................................................................... 41

5.3.6.16 Relay Output / Biocide Timer Control Mode Address Map ................................................................................... 42

5.3.6.17 Relay Output / Spike Control Mode Address Map ................................................................................................. 43

5.3.6.18 Relay Output / Probe Wash Control Mode Address Map ...................................................................................... 44

5.3.6.19 Relay Output / Plating Control Mode Address Map .............................................................................................. 45

5.3.6.20 Relay Output / Plating Follow Control Mode Address Map ................................................................................... 46

5.3.6.21 Relay Output / Lag Output Control Mode Address Map........................................................................................ 47

5.3.6.22 Relay Output / Alarm Control Mode Address Map ................................................................................................ 48

5.3.7 Pulse Relay Output Address Maps ................................................................................................................................... 49

5.3.7.1 Pulse Relay Output / Manual Control Mode Address Map .................................................................................... 49

5.3.7.2 Pulse Relay Output / Pulse Proportional Control Mode Address Map .................................................................. 50

5.3.7.3 Pulse Relay Output / Flow Proportional Control Mode Address Map ................................................................... 51

5.3.7.4 Pulse Relay Output / Pulse PID Control Mode Address Map ................................................................................. 52

5.3.7.5 Pulse Relay Output / Pulse Disturbance Control Mode Address Map ................................................................... 53

5.3.7.6 Pulse Relay Output / Lag Output Control Mode Address Map .............................................................................. 54

5.3.8 Analog Output Address Maps .......................................................................................................................................... 55

5.3.8.1 Analog Output / Manual Control Mode Address Map ........................................................................................... 55

5.3.8.2 Analog Output / Retransmit Mode Address Map .................................................................................................. 56

5.3.8.3 Analog Output / Proportional Control Mode Address Map ................................................................................... 57

5.3.8.4 Analog Output / Flow Proportional Control Mode Address Map .......................................................................... 58

5.3.8.5 Analog Output / PID Control Mode Address Map ................................................................................................. 59

5.3.8.6 Analog Output / Disturbance Control Mode Address Map .................................................................................... 60

5.3.8.7 Analog Output / Lag Output Control Mode Address Map ..................................................................................... 61

5.3.9 Alternate Address Maps .................................................................................................................................................. 62

5.3.9.1 Alternate Sensor Input Address Map ..................................................................................................................... 62

5.3.9.2 Alternate Digital Input Address Map ..................................................................................................................... 63

5.3.9.3 Alternate Virtual Input Address Map ..................................................................................................................... 64

5.3.9.4 Alternate Relay Output Address Map .................................................................................................................... 65

5.3.9.5 Alternate Analog Output Address Map ................................................................................................................. 66

5.3.9.6 Alternate Control Output Address Map ................................................................................................................. 67

5.4 Status Register Codes ........................................................................................................................................................... 68

5.5 Alarm Bitfields ...................................................................................................................................................................... 70

5.5.1 System Alarm Bitfield ...................................................................................................................................................... 70

5.5.2 Network Alarm Bitfield .................................................................................................................................................... 70

5.5.3 Sensor Input Alarm Bitfield ............................................................................................................................................. 71

5.5.4 Digital Input Alarm Bitfield .............................................................................................................................................. 71

5.5.5 Virtual Input Alarm Bitfield .............................................................................................................................................. 72

5.5.6 Relay & Control Output Alarm Bitfield ............................................................................................................................ 72

5.5.7 Analog Output Alarm Bitfield .......................................................................................................................................... 73

1.0 SCOPE

This document is a User Interface Specification for the Walchem Modbus/TCP product feature for W600
and W900 Controllers. It contains mapping of the various dynamic variables to their Modbus/TCP
address locations.

This document supports the Modbus/TCP feature on controller software versions 3.01 and higher.

2.0 INTRODUCTION

The Modbus/TCP feature allows the Walchem controller to communicate with PC-based applications
such as WonderWare and Intellution HMI/SCADA programs, Building Energy Management systems,
Distributed Control Systems (DCS), as well as stand-alone HMI devices.

The controller is a Modbus Server, meaning that it can respond to requests from the HMI device. The
controller cannot initiate the flow of information. For example, it will not immediately send a new alarm
message. It will wait until the HMI device requests the current data contained in specific address
locations.

If the HMI device does not directly support the Modbus/TCP protocol, then a protocol translation
gateway may be required to convert from Modbus/TCP to a protocol that the device supports. Please
note that Modbus/RTU requires a serial interface, not Ethernet, and therefore is not directly compatible
with the Walchem controller.

3.0 OVERVIEW

Modbus/TCP, also known as Modbus TCP/IP, is a form of Modbus that uses the TCP/IP layers as a base
for controlling the communications between different devices. This is not to be confused with Modbus
over TCP/IP, which Walchem controllers do not support.

The Modbus/TCP protocol supports multiple types of data transactions, from reading single bits per
transaction, to advanced object-oriented operations. However, to ensure the most compatible system
available, only a basic subset of these functions is supported in the controller.

The official Modbus/TCP protocol supports data addresses 5 digits in length. A de facto extended
standard exists which supports data addresses 6 digits in length. However, to ensure compatibility, the
Modbus/TCP feature supports only 5-digit data address system.

The Modbus/TCP feature supports reading and writing of single-bit Coils and 16-bit Holding Registers, as
well as read-only single-bit Discrete Inputs and 16-bit Input Registers. These data formats allow the
controller to establish blocks that contain all the process variables, set points, alarms, and input/output
status values that are made public to a Modbus/TCP client. These blocks of data are packaged so that it
can be read in 8-bit chunks (for a group of up to 8 Coils or Discrete Inputs) or 16-bit chunks (for a single
Holding Register or Input Register), regardless of the type of data within it. In the following sections, the
formatting, storing, and reading of this data are described.

1

3.1 Modbus Settings

Modbus Application Protocol (MBAP)

Header

Modbus Application Protocol (MBAP) Header

Name

Size

Description

Identification of Request/Response transaction.
Copied from request to response

Protocol Identifier

2 bytes

0 = Modbus protocol.

Length

2 bytes

Number of following bytes (includes the Unit Identifier and PDU)

Identification of Remote Device.
Can be used for broadcasting (unsupported).

Settings relating to the Modbus/TCP feature can be configured in the Remote Communication
Configuration Menu.

The ‘Verbose Logging’ setting is used to generate an Event log entry for every Modbus message into and
out of the controller. The information may be used in conjunction with an HMI log when
troubleshooting communications during commissioning. However, the additional logging adds a
significant load on the controller’s systems. Therefore, this feature should only be enabled temporarily
while actively troubleshooting communications. The setting automatically reverts to Disabled when the
controller is restarted.

Detailed information on the Remote Communication Configuration Menu can be found in the controller
Instruction Manual.

4.0 MODBUS/TCP DRIVER

4.1 Modbus/TCP Protocol

The Modbus protocol, as well as the Modbus/TCP variant, is well documented in the specifications
which are available at http://www.modbus.org
supporting and organizing the Modbus protocol.

The Modbus/TCP Application Data Unit (ADU) consists of 2 distinct sections:

, a website established by the Modbus Organization for

Protocol Data Unit (PDU)

The total size of the ADU is between 9 and 263 bytes, depending on the function code and number of
data addresses requested.

4.1.1 MBAP Header

The Modbus/TCP extension adds 7 additional bytes to the original Modbus protocol, which allows for
the transport over the TCP/IP layers. These 7 bytes make up the MBAP Header:

Transaction Identifier 2 bytes

Unit Identifier 1 byte

The Unit Identifier has a special consideration in the Modbus/TCP implementation. If the value is 0, then
the request is a broadcast message and the packet will be processed, but no response will be generated.
If the value is non-zero, the packet will be processed and a response will be returned.

Normally the Slave ID, which is not present in the Modbus/TCP protocol, will be set in the HMI client
software to 1. The broadcast Unit Identifier address is not supported by the controller; all supported
function codes require a response message at all times.

2

4.1.2 Protocol Data Unit

Protocol Data Unit (PDU)

Name

Size

Description

Function Code identifier.
Can be any of the hexadecimal codes listed in the Function Code table.

1 – 255

byte(s)

Payload for request/response transactions.
Varies depending on function code and number of addresses requested.

Supported Function Codes

Function

Code

Data Address

Range

FC1

(0x01)

Read up to 2000 consecutive 1-bit Coils within a single
request/response cycle.

FC2

(0x02)

Read Discrete

Inputs

Read up to 2000 consecutive 1-bit Discrete Inputs
within a single request/response cycle.

FC3

(0x03)

Read Holding

Registers

Read up to 125 consecutive 16-bit Holding Registers
within a single request/response cycle.

FC4

(0x04)

Read Input

Registers

Read up to 125 consecutive 16-bit Input Registers
within a single request/response cycle.

FC5

(0x05)

Write a single 1-bit Coil within a single
request/response cycle.

FC6

(0x06)

Write Single

Holding Register

Write a single 16-bit Holding Register within a single
request/response cycle.

FC16

(0x10)

Write Multiple

Holding Registers

Write up to 125 consecutive 16-bit Holding Registers
within a single request/response cycle.

The Protocol Data Unit (PDU) is made up of between 2 and 256 bytes, depending on the function and
number of data addresses requested:

Function Code 1 byte

Data Payload

4.1.3 Modbus/TCP Function Codes

The Modbus/TCP Server feature supports the following function codes:

Name Description

Read Coils

0xxxx

1xxxx

4xxxx

3xxxx

Write Single Coil

0xxxx

4xxxx

4xxxx

The consecutive address limitations of the Coils, Discrete Inputs, Holding Registers, and Input Registers
were established for the Modbus/TCP standard to maintain consistency with the original Modbus
protocol standard, even though a TCP/IP packet can contain a larger payload.

The Modbus/TCP feature allows for Function Codes 1 and 2 to be used interchangeably for read
requests. For example, a read coils (FC1) request for data addresses 00605 through 00610 will always
return the same result as a read discrete inputs (FC2) request for data addresses 10605 through 10610.

Likewise, the Modbus/TCP feature allows for Function Codes 3 and 4 to also be used interchangeably for
read requests. For example, a read holding registers (FC3) request for data addresses 40587 through
40590 will always return the same result as a read input registers (FC4) request for data addresses
30587 through 30590. All addresses accessible as a Coil or Discrete Input may also be accessed as a
Holding Register or Input Register.

Only the 4 least significant digits of the data address are explicitly stated in the Modbus message, with
the most significant (5

th

) digit being derived from the function code. However, generally the entire

5-digit data address must be specified in the Tag Database of an HMI.

3

4.1.3.1 Function Code 1, Read Coils

Read Coils Request PDU

Name

Size

Description

Function Code

1 Byte

Function Code Identifier (0x01).

Starting Address

2 Bytes

The data address of the first Coil to read.

Quantity of Coils

2 Bytes

The number of Coils requested, maximum of 2000 per message.

Read Coils Response PDU

Name

Size

Description

Function Code

1 Byte

Function Code Identifier (0x01).

Byte Count

1 Byte

The number of data bytes to follow.

Coil Status

1-125 Bytes

8 Coils per byte, up to 2000 Coils per message.

Read Coils Exception PDU

Name

Size

Description

Error Code

1 Byte

0x80 plus Function Code Identifier (0x81).

Exception Code

1 Byte

See 4.1.4 Modbus/TCP Exception Error Codes

Read Discrete Inputs Request PDU

Name

Size

Description

Function Code

1 Byte

Function Code Identifier (0x02).

Starting Address

2 Bytes

The data address of the first Discrete Input to read.

Quantity of

Discrete Inputs

The number of Discrete Inputs requested, maximum of 2000 per
message.

Read Discrete Inputs Response PDU

Name

Size

Description

Function Code

1 Byte

Function Code Identifier (0x02).

Byte Count

1 Byte

The number of data bytes to follow.

Discrete Input

Status

8 Discrete Inputs per byte, up to 2000 Discrete Inputs per
message.

Read Discrete Inputs Exception PDU

Name

Size

Description

Error Code

1 Byte

0x80 plus Function Code Identifier (0x82).

Exception Code

1 Byte

See 4.1.4 Modbus/TCP Exception Error Codes

4.1.3.2 Function Code 2, Read Discrete Inputs

2 Bytes

1-125 Bytes

4

4.1.3.3 Function Code 3, Read Holding Registers

Read Holding Registers Request PDU

Name

Size

Description

Function Code

1 Byte

Function Code Identifier (0x03).

Starting Address

2 Bytes

The data address of the first Holding Register to read.

Quantity of

Holding Registers

The total number of Holding Registers requested, maximum of
125 per message.

Read Holding Registers Response PDU

Name

Size

Description

Function Code

1 Byte

Function Code Identifier (0x03).

Byte Count

1 Byte

The number of data bytes to follow.

Holding Register

Values

1 Holding Register for every 2 bytes, maximum of 125 Holding
Registers per message.

Read Holding Registers Exception PDU

Name

Size

Description

Error Code

1 Byte

0x80 plus Function Code Identifier (0x83).

Exception Code

1 Byte

See 4.1.4 Modbus/TCP Exception Error Codes

Read Input Registers Request PDU

Name

Size

Description

Function Code

1 Byte

Function Code Identifier (0x04).

Starting Address

2 Bytes

The data address of the first Input Register to read.

Quantity of Input

Registers

The total number of Input Registers requested, maximum of 125
per message.

Read Input Registers Response PDU

Name

Size

Description

Function Code

1 Byte

Function Code Identifier (0x04).

Byte Count

1 Byte

The number of data bytes to follow.

Input Register

Values

1 Input Register for every 2 bytes, maximum of 125 Input
Registers per message.

Read Input Registers Exception PDU

Name

Size

Description

Error Code

1 Byte

0x80 plus Function Code Identifier (0x84).

Exception Code

1 Byte

See 4.1.4 Modbus/TCP Exception Error Codes

2 Bytes

2-250 Bytes

4.1.3.4 Function Code 4, Read Input Registers

2 Bytes

2-250 Bytes

5

4.1.3.5 Function Code 5, Write Single Coil

Write Single Coil Request PDU

Name

Size

Description

Function Code

1 Byte

Function Code Identifier (0x05).

Coil Address

2 Bytes

The data address of the Coil to which to write.

Coil Value

2 Bytes

The value to write to the Coil (0xFF00 = On, 0x0000 = Off).

Write Single Coil Response PDU

Name

Size

Description

Function Code

1 Byte

Function Code Identifier (0x05).

Coil Address

2 Bytes

The data address of the Coil written.

Coil Value

2 Bytes

The value written to the Coil (0xFF00 = On, 0x0000 = Off).

Write Single Coil Exception PDU

Name

Size

Description

Error Code

1 Byte

0x80 plus Function Code Identifier (0x85).

Exception Code

1 Byte

See 4.1.4 Modbus/TCP Exception Error Codes

Write Single Holding Register Request PDU

Name

Size

Description

Function Code

1 Byte

Function Code Identifier (0x06).

Holding Register

Address

Holding Register

Value

Write Single Holding Register Response PDU

Name

Size

Description

Function Code

1 Byte

Function Code Identifier (0x06).

Holding Register

Address

Holding Register

Value

Write Single Holding Register Exception PDU

Name

Size

Description

Error Code

1 Byte

0x80 plus Function Code Identifier (0x86).

Exception Code

1 Byte

See 4.1.4 Modbus/TCP Exception Error Codes

4.1.3.6 Function Code 6, Write Single Holding Register

2 Bytes The data address of the Holding Register to which to write.

2 Bytes The value to write to the Holding Register.

2 Bytes The data address of the Holding Register written.

2 Bytes The value written to the Holding Register.

6

4.1.3.7 Function Code 16, Write Multiple Holding Registers

Write Multiple Holding Registers Request PDU

Name

Size

Description

Function Code

1 Byte

Function Code Identifier (0x10).

Starting Address

2 Bytes

The data address of the first Holding Register to which to write.

Quantity of

Holding Registers

Byte Count

1 Byte

The number of data bytes to follow.

Holding Register

Values

2 bytes for every Holding Register, maximum of 125 Holding
Registers per message. Write Multiple Holding Registers Response PDU

Name

Size

Description

Function Code

1 Byte

Function Code Identifier (0x10).

Starting Address

2 Bytes

The data address of the Holding Register written.

Quantity of

Holding Registers

Write Multiple Holding Registers Exception PDU

Name

Size

Description

Error Code

1 Byte

0x80 plus Function Code Identifier (0x90).

Exception Code

1 Byte

See 4.1.4 Modbus/TCP Exception Error Codes

Supported Exception Codes

Exception Code

Name

Description

The function code received is not supported in the
controller.

The data address received is not an allowable address within

register requested is not valid for the function.

A value contained in the query data field for a Write

for the function.

An unrecoverable error occurred while the controller was

but the controller could provide a response.

2 Bytes Number of Holding Registers to write.

1-250 Bytes

2 Bytes Number of Holding Registers written.

4.1.4 Modbus/TCP Exception Error Codes

The Modbus/TCP feature supports the following Exception (Error) Codes:

0x01 Illegal Function

0x02 Illegal Data Address

0x03 Illegal Data Value

0x04 Slave Device Failure

When an exception occurs, the Response PDU contains a Function Code of 0x80 plus the original
hexadecimal Function Code.

the controller. This error will only be generated if the first

command is not an allowable value for field. This error will
only be generated if the first register requested is not valid

attempting to perform the requested action. This is a
general exception code indicating that the request was valid,

7

4.2 TCP/IP Interface

Byte Value

Coil 1

Coil 2

6 unused bits

0x02

(00000010)

Word Value

Coil Value

Most Significant Byte

Least Significant Byte

0xFF00

(1111111100000000)

0xFF

(11111111)

0x00

(00000000)

Word Value

Bit Value

Most Significant Byte

Least Significant Byte

0x0001

(0000000000000001)

0x00

(00000000)

0x01

(00000001)

The Modbus/TCP interface is attached to the TCP/IP stack that is implemented within the Walchem
controller. When the Modbus feature is Enabled, the controller will listen to all communications that
come in on the Modbus/TCP registered port 502. This port can be changed in the Remote
Communications Menu.

4.3 Data Refresh

To ensure continued connectivity, the Modbus/TCP client should not request data more frequently than
once every 5000 msec. Faster refresh rates are unsupported and may result in unexpected behavior.

4.4 Data Encoding

Modbus uses a ‘big-endian’ representation for addresses and data items. This means that within each
register, when a numerical quantity larger than a single byte is transmitted, the MOST significant byte is
sent first. The following topics describe the different types of encoding and show how the data is
encoded within the Modbus/TCP packet. Most client drivers will extract the data from the packet in the
correct format for use/display within the client environment.

4.4.1 Coils and Discrete Inputs

4.4.1.1 Boolean

Coils and Discrete Inputs can be used for digital input states, relay states, alarm states, and reset buttons
that are representable as a 1 or a 0. All binary data is packed from least significant bit to most significant
bit into a byte containing up to 8 Coils or Discrete Inputs. Bits not containing the value of a Coil or
Discrete Input are space holders and have a value of 0.

0 1 000000

Reset buttons may also be packed as a 16-bit word when using the Write Single Coil function code.
(0xFF00 = On, 0x0000 = Off)

1

4.4.2 Holding Register and Input Registers

4.4.2.1 16-Bit Word (Boolean)

Holding Registers and Input Registers can be used for digital input states, relay states, alarm states, and
reset buttons that are representable as a 1 or a 0. All binary data can be packed into a 16-Bit register,
with the least significant bit of the least significant byte being occupied by the 1-bit value. This is
functionally identical to a 16-bit integer.

1

8

4.4.2.2 16-Bit Word (Bitfield)

Word Value

Alarm Bitfield Value

Most Significant Byte

Least Significant Byte

0x00AA

(0000000010101010)

0x00

(00000000)

0xAA

(10101010)

Word Value

Alarm Bitfield Value

Most Significant Byte

Least Significant Byte

0x00AA

(0000000010101010)

0x00

(00000000)

0xAA

(10101010)

Word Value

Most Significant Byte

Least Significant Byte

0x1234

0x12

0x34

Register 1

Register 2

Most Significant

Least Significant

Most Significant

Least Significant

Least Significant Word

Most Significant Word

0x12345678

0x56

0x78

0x12

0x34

Register 1

Register 2

Most Significant

Least Significant

Most Significant

Least Significant

Least Significant Word

Most Significant Word

0x12345678

0x56

0x78

0x12

0x34

Holding Registers and Input Registers can be used for Alarm Bitfields. An 8-Bit Alarm bitfield is packed
into the least significant byte of a 16-bit register. This is offered as a single-register alternative to
accessing alarm states individually. Bitfields can be decoded in section 5.5 Alarm Bitfields

0xAA

.

4.4.2.3 16-Bit Word (Status)

Holding Registers and Input Registers can be used for enumerated values such as status codes. An 8-Bit
status code is packed into the least significant byte of a 16-bit register. This is functionally identical to
the 16-bit integer. Status codes are defined in section 5.4 Status Register Codes

0xAA

.

4.4.2.4 16-Bit Word (Integer)

Holding Registers and Input Registers can be used for 16-bit integers containing HOA settings, and time
data that don’t require 32-bit integers. All 16-bit integers are unsigned.

4.4.2.5 32-Bit Value (Integer)

Holding Registers and Input Registers can be used for 32-bit integer data containing elapsed time values
and timestamps. The system clock register and all registers containing timestamps use the Unix Time
format, that counts the seconds passed since 12:00:00 am, January 1
wide; therefore, a request message must include 2 consecutive registers to read or write a 32-bit
integer. The 32-bit value is transmitted with the least significant word first, then the most significant
word. All 32-bit integers are unsigned.

Word Value

st

, 1970. Registers are only 16 bits

4.4.2.6 32-Bit Value (Float)

Holding Registers and Input Registers can be used for 32-bit floating point data containing set points,
sensor readings, percentages, deadbands, etc. Registers are only 16 bits wide; therefore, a request
message must include 2 consecutive registers to read or write a 32-bit float. The 32-bit value is
transmitted with the least significant word first, then the most significant word.

Word Value

9

4.4.2.7 32-Bit Inverse Data Format (Integer or Float)

Register 1

Register 2

Most Significant

Least Significant

Most Significant

Least Significant

Most Significant Word

Least Significant Word

0x12345678

0x12

0x34

0x56

0x78

32-bit integers and floats can use an inverse data format, where the contents of registers 1 and 2 are
switched. When inverse data format is selected, the 32-bit value is transmitted with the most significant
word first, then the least significant word. The data format setting can be modified in the Remote
Communications Settings Menu.

Word Value

5.0 DATA DICTIONARY

5.1 Addressing (0- or 1-Based)

The addressing within the Modbus/TCP protocol (that is, the data within the physical packet) is 0-based,
meaning the first element/item to be accessed is referenced by address 0. The Modbus standard for
handling and displaying data is 1-based, meaning the first element/data item to be accessed is
referenced by address 1.

For most client applications, users enter the 1-based number which is converted to 0-based addressing
at the protocol level. The addresses defined in the following address maps below are 1-based, as most
of the client applications work with this method. Register addresses for individual elements are derived
by adding the address offset in the appropriate Type-Specific Address Map
I/O Channel Address Map below.

to the starting address in the

5.2 Address Maps

The address map is a function code-agnostic map that contains all data values that can be accessed as
Coils (0xxxx), Discrete Inputs (1xxxx), Holding Registers (4xxxx), and Input Registers (3xxxx).

The Address Map of the Modbus/TCP feature is modular; valid addresses are determined by the add-on
card configuration of the controller and the task being performed by each Input or Output. Each object
has a block of 36 addresses.

The Modbus/TCP feature allows all addresses to be accessed as registers. On the following address map
tables, values in BOLD can also be accessed as a Coil or Discrete Input.

As examples, to read the ‘Controller Firmware Version’ from the System Address Map
x0037) as an Input Register (FC4), the address indices 2 and 3 must be requested together: Addresses
30039 and 30040.

To read the ‘Low Alarm’ status for Sensor 2-1 in a W600 Controller as a Coil (FC1), the

Address Map indicates the starting address is x0865. Address index 28 must be requested: Address

00893. For the W900 Controller, the ‘Low Alarm’ status for Sensor 2-1 is x1729 + 28 = Address 01757.

To write the ‘Setpoint’ for Relay 3 (set to On/Off control mode) in the

Address Map (staring address x9001) as a Holding Register (FC6), the address indices 6 and 7 must be

used together: Addresses 49007 and 49008.

Relay On/Off Control Mode

(starting address

Sensor Input

10

5.2.1 W600 Controller – I/O Channel Address Maps

W600 Controller – I/O Channel Address Map

Starting
Address

Ending

Address

Type-Specific Address Maps

System

Network

Sensor Input 1-1

Sensor Input 1-2

Sensor Input 1-3

Sensor Input 2-1

x0865

x0900

Sensor Input 2-2

x0901

x0936

Sensor Input 2-3

x0937

x0972

Digital Input 1

x0289

x0324

Digital Input 2

Digital Input 3

Digital Input 4

Digital Input 5

Digital Input 6

Virtual Input 1

Virtual Input 2

x5797

x5832

Relay Output 1

x8929

x8964

Relay Output 2

x8965

x9000

Relay Output 3

Relay Output 4

Relay Output 5

Relay Output 6

Analog Output 1

Analog Output 2

The address ranges for each input/output channel in the W600 controller are as follows:

Object

x0037 x0072 See 5.3.1 System Address Map

x0145 x0180 See 5.3.2 Network Address Map

x0577 x0612

x0613 x0648

x0649 x0684

x0325 x0360

x0361 x0396

x0397 x0432

x0433 x0468

x0469 x0504

x5761 x5796

See 5.3.3 Sensor Input Address Maps

See 5.3.4 Digital Input Address Maps

See 5.3.5 Virtual Input Address Maps

See 5.3.6 Relay Output Address Maps

x9001 x9036

x9037 x9072

x9073 x9108

x9109 x9144

x1153 x1188

x1189 x1224

5.3.7 Pulse Relay Output Address Maps

See 5.3.8 Analog Output Address Maps

Or

11

5.2.2 W900 Controller – I/O Channel Address Maps

W900 Controller – I/O Channel Address Map

Type-Specific Address Maps

System

Network

Sensor Input 1-1

Sensor Input 1-2

Sensor Input 1-3

Sensor Input 1-4

x1261

x1296

Sensor Input 1-5

x1297

x1332

Sensor Input 1-6

x1333

x1368

Sensor Input 2-1

Sensor Input 2-2

Sensor Input 2-3

Sensor Input 2-4

Sensor Input 2-5

Sensor Input 2-6

Sensor Input 3-1

Sensor Input 3-2

Sensor Input 3-3

x2377

x2412

Sensor Input 3-4

x2413

x2448

Sensor Input 3-5

x2449

x2484

Sensor Input 3-6

Sensor Input 4-1

Sensor Input 4-2

Sensor Input 4-3

Sensor Input 4-4

Sensor Input 4-5

Sensor Input 4-6

x3061

x3096

Digital Input 1

x0577

x0612

Digital Input 2

x0613

x0648

Digital Input 3

x0649

x0684

Digital Input 4

Digital Input 5

Digital Input 6

Digital Input 7

Digital Input 8

Digital Input 9

Digital Input 10

x0901

x0936

Digital Input 11

x0937

x0972

Digital Input 12

x0973

x1008

The address ranges for each input/output channel in the W900 controller are as follows:

Object Starting Address Ending Address

x0037 x0072 See 5.3.1 System Address Map

x0145 x0180 See 5.3.2 Network Address Map

x1153 x1188

x1189 x1224

x1225 x1260

x1729 x1764

x1765 x1800

x1801 x1836

x1837 x1872

x1873 x1908

x1909 x1944

x2305 x2340

x2341 x2376

x2485 x2520

x2881 x2916

x2917 x2952

x2953 x2988

x2989 x3024

x3025 x3060

See 5.3.3 Sensor Input Address Maps

Note: When using P/N 191918 I/O card with

2 Analog Input + 4 Analog Output channels,
the two (4-20 mA) Sensor Inputs are mapped
from channels 1 and 2 into channels 5 and 6.

For example, if the card is installed in the third

I/O slot, the register address mapping is:

Analog Output 3-1: x2305 to x2340
Analog Output 3-2: x2341 to x2376
Analog Output 3-3: x2377 to x2412
Analog Output 3-4: x2413 to x2448
Sensor Input 3-1: x2449 to x2484
Sensor Input 3-2: x2485 to x2520

x0685 x0720

x0721 x0756

x0757 x0792

x0793 x0828

x0829 x0864

x0865 x0900

12

See 5.3.4 Digital Input Address Maps

W900 Controller – I/O Channel Address Map

Object

Starting Address

Ending Address

Type-Specific Address Maps

Virtual Input 1

x5761

x5796

Virtual Input 2

x5797

x5832

Virtual Input 3

Virtual Input 4

Virtual Input 5

Virtual Input 6

Virtual Input 7

Virtual Input 8

Relay Output 1

Relay Output 2

x8965

x9000

Relay Output 3

x9001

x9036

Relay Output 4

x9037

x9072

Relay Output 5

Relay Output 6

Relay Output 7

Relay Output 8

x9181

x9144

Analog Output 1-1

Analog Output 1-2

Analog Output 1-3

Analog Output 1-4

x1261

x1296

Analog Output 2-1

x1729

x1764

Analog Output 2-2

x1765

x1800

Analog Output 2-3

x1801

x1836

Analog Output 2-4

Analog Output 3-1

Analog Output 3-2

Analog Output 3-3

Analog Output 3-4

Analog Output 4-1

Analog Output 4-2

x2917

x2952

Analog Output 4-3

x2953

x2988

Analog Output 4-4

x2989

x3024

Control Output 1

Control Output 2

Control Output 3

Control Output 4

Control Output 5

Control Output 6

Control Output 7

x7129

x7164

Control Output 8

x7165

x7200

x5833 x5868

x5869 x5904

x5905 x5940

x5941 x5976

x5977 x6012

x6013 x6048

x8929 x8964

See 5.3.5 Virtual Input Address Maps

x9073 x9108

x9109 x9144

x9145 x9180

x1153 x1188

x1189 x1224

x1225 x1260

x1837 x1872

x2305 x2340

x2341 x2376

x2377 x2412

x2413 x2448

x2881 x2916

See 5.3.6 Relay Output Address Maps

Or

5.3.7 Pulse Relay Output Address Maps

See 5.3.8 Analog Output Address Maps

x6913 x6948

x6949 x6984

x6985 x7020

x7021 x7056

x7057 x7092

x7093 x7128

See 5.3.6 Relay Output Address Maps

Or

5.3.7 Pulse Relay Output Address Maps

Note: Control Outputs share address maps

and alarm bitfields with Relay control modes

13

5.2.3 Alternate Address Maps

Primary Value; Status

Calibration Required

DI State; Interlock State

Low, High Alarms

Primary Value; Status

Alarm Bitfield

Relay State

Alarm Bitfield

Output Percent

Alarm Bitfield

Output State

Alarm Bitfield

Scenario #1: I/O Slot 2 Not Populated

Scenario #2: I/O Slot 2 Populated

Channel

Address

Alternate

Address

Channel

Address

Alternate

Address

I/O Slot 1: Dual Sensor Input Card

I/O Slot 1: Dual Sensor Input Card

Sensor Input 1-1

x1153

Sensor 1

x9217

Sensor Input 1-1

x1153

Sensor 1

x9217

Sensor Input 1-2

x1189

Sensor 2

x9219

Sensor Input 1-2

x1189

Sensor 2

x9219

Sensor Input 1-3

x1225

Sensor 3

x9221

Sensor Input 1-3

x1225

Sensor 3

x9221

Sensor Input 1-4

x1261

Sensor 4

x9223

Sensor Input 1-4

x1261

Sensor 4

x9223

I/O Slot 2: Not Populated

I/O Slot 2: Single Sensor Input Card

Sensor Input 2-1

x1729

Sensor 5

x9225

Sensor Input 2-2

x1765

Sensor 6

x9227

I/O Slot 3: Dual Analog Input Card

I/O Slot 3: Dual Analog Input Card

Sensor Input 3-1

x2305

Sensor 5

x9225

Sensor Input 3-1

x2305

Sensor 7

x9229

Sensor Input 3-2

x2341

Sensor 6

x9227

Sensor Input 3-2

x2341

Sensor 8

x9231

The I/O Address Maps in the previous sections are based on the hardware position/slot within the
controller. Alternate Address Maps use software-based, dynamic addressing to provide a more efficient
way to access similar data from different objects. Using these address tables, the same field type is
accessible using consecutive addresses. For example, the primary values for all sensors installed in the
controller can be accessed in a single Modbus FC4 request/response cycle starting at address 39217.

I/O Type Available Objects Type-Specific Alternate Address Map

Sensor Inputs

Digital Inputs

Virtual Inputs

Relay Outputs

Analog Outputs

Control Outputs

Alarm Bitfield

Low, High Alarms

LoLo, HiHi Alarms

Total Time

Flowrate;

Pulse Output Percent

Flow Total

Alarm Bitfield

Time On;

Time On; Status

Output Percent
Time On;

Status

Status

See 5.3.9.1 Alternate Sensor Input / Temperature Input /

Analog Input Address Map

See 5.3.9.2 Alternate Digital Input Address Map

See 5.3.9.3 Alternate Virtual Input Address Map

See 5.3.9.4 Alternate Relay Output Address Map

See 5.3.9.5 Alternate Analog Output Address Map

See 5.3.9.6 Alternate Control Output Address Map

Note that changing I/O card locations can affect the address used to access individual objects. For
example, if a W900 is configured with a Dual SI card in slot 1 and a Dual AI card in slot 3, the alternate
address mappings for the primary values are different if a Single SI card is inserted into slot 2:

14

5.3 Type-Specific Address Maps

System Address Map

Address

Name

Data Encoding

Permissions

Value

0

1

2

Controller Firmware

Version

3

4

5

6

Controller Processor

Temperature

7

8

Network Card

Temperature

9

10

Digital Input Card

Temperature (W900 Only)

11

12

13

14

15

16

I/O Card 3 Temperature

(W900 Only)

17

18

I/O Card 4 Temperature

(W900 Only)

19

20

21

22

23

24

25

26

27

28

29

30

31

32

+12 V Supply

(W900 Only)

33

34

35

Alarm Bitfield

16-Bit Bitfield

Read

See 5.5.1 System Alarm Bitfield

5.3.1 System Address Map

Controller Time 32-Bit Integer Read Unix Time

32-Bit Float Read

Date of Last Data Log 32-Bit Integer Read Unix Time

32-Bit Float Read °C

32-Bit Float Read °C

32-Bit Float Read °C

I/O Card 1 Temperature 32-Bit Float Read °C

I/O Card 2 Temperature 32-Bit Float Read °C

32-Bit Float Read °C

32-Bit Float Read °C

Battery Power 32-Bit Float Read Volt

+3.3 V Supply 32-Bit Float Read Volt

+5 V Supply 32-Bit Float Read Volt

32-Bit Float Read Volt

15

5.3.2 Network Address Map

Network Address Map

Address

Name

Data Encoding

Permissions

Value

0

1

2

VTouch Last

Configuration Time

3

4

5

VTouch LiveConnect

Status

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

WiFi Channel

(W900 Only)

23

WiFi Security

(W900 Only)

25

WiFi Status (W900 Only)

16-Bit Status

Read

See 5.4 Status Register Codes

Begin Temporary

(W900 Only)

27

28

29

30

31

32

33

34

See 5.5.2 Network Alarm

Bitfield

VTouch Last Data Time 32-Bit Integer Read Unix Time

VTouch Refresh Rate 32-Bit Float Read/Write 1 – 1440 Minutes

32-Bit Integer Read Unix Time

24

6

WiFi Signal Strength

(W900 Only)

WiFi RSSI

(W900 Only)

16-Bit Status Read See 5.4 Status Register Codes

32-Bit Float Read -30 – -100 dBm

32-Bit Float Read 0 – 100%

32-Bit Float Read 1 – 14

16-Bit Status Read See 5.4 Status Register Codes

26

Ad-Hoc Mode Session

Ad-Hoc Mode Time Limit

35 Alarm Bitfield 16-Bit Bitfield Read

(W900 Only)

Boolean Read/Write

32-Bit Float Read/Write

16

Write 1 to Begin Temporary

Ad-Hoc Mode Session

1 – 1440 minutes

5.3.3 Sensor Input Address Maps

Sensor Input (all types except Analog Input Flowmeter) Address Map

Address

Name

Data Encoding

Permissions

Value

0

1

Cond: µS/cm before ATC

Temperature: Ω

Corrosion Rate: mpy (Mild Steel)

Imbalance

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

Low Alarm

Boolean

Read

1 = Alarm Active

29

High Alarm

Boolean

Read

1 = Alarm Active

30

LoLo Alarm

Boolean

Read

1 = Alarm Active

31

HiHi Alarm

Boolean

Read

1 = Alarm Active

32

Cal Required

Boolean

Read

1 = Alarm Active

33

Input Failure

Boolean

Read

1 = Alarm Active

34

Status

16-Bit Status

Read

See 5.4 Status Register Codes

35

Alarm Bitfield

16-Bit Bitfield

Read

See 5.5.3 Sensor Input Alarm Bitfield

5.3.3.1 Sensor Input (all types except Analog Input Flowmeter) Address Map

Primary Value 32-Bit Float Read Sensor Units

2

Active, Cu/Ni: mV
4-20 mA Input: mA

Primary Raw Value 32-Bit Float Read

3

Imbalance: Corrosion Rate

Last Calibration Date 32-Bit Integer Read Unix Time

Deadband 32-Bit Float Read/Write Sensor Units

Smoothing Factor 32-Bit Float Read/Write 0 – 90%

LoLo Alarm Setpoint 32-Bit Float Read/Write Sensor Units

Low Alarm Setpoint 32-Bit Float Read/Write Sensor Units

High Alarm Setpoint 32-Bit Float Read/Write Sensor Units

HiHi Alarm Setpoint 32-Bit Float Read/Write Sensor Units

17

5.3.3.2 Analog Input Flowmeter Address Map

Analog Input Flowmeter Address Map (W900 Controller Only)

Address

Name

Data Encoding

Permissions

Value

0

Flow Units

Rate Units

1

2

3

4

5

6

7

8

9

10

Flow Units

Rate Units

11

12

13

14

15

16

17

18

Rate Units

19

20

Flow Units

Rate Units

21

22

23

24

25

Reset Total Flow

Boolean

Read/Write

Write 1 to Reset Flow Total

26

27

28

Low Alarm

Boolean

Read

1 = Alarm Active

29

High Alarm

Boolean

Read

1 = Alarm Active

30

LoLo Alarm

Boolean

Read

1 = Alarm Active

31

HiHi Alarm

Boolean

Read

1 = Alarm Active

32

Cal Required

Boolean

Read

1 = Alarm Active

33

Input Failure

Boolean

Read

1 = Alarm Active

34

Status

16-Bit Status

Read

See 5.4 Status Register Codes

35

Alarm Bitfield

16-Bit Bitfield

Read

See 5.5.3 Sensor Input Alarm Bitfield

Primary Value 32-Bit Float Read

Primary Raw Value 32-Bit Float Read mA

Last Calibration Date 32-Bit Integer Read Unix Time

Flow Total 32-Bit Float Read Flow Units

Input Filter 32-Bit Float Read/Write mA

Deadband 32-Bit Float Read/Write

Smoothing Factor 32-Bit Float Read/Write 0 – 90%

LoLo Alarm Setpoint 32-Bit Float Read/Write

Low Alarm Setpoint 32-Bit Float Read/Write

High Alarm Setpoint 32-Bit Float Read/Write

HiHi Alarm Setpoint 32-Bit Float Read/Write

Flow Units
Rate Units

Flow Units
Rate Units

Flow Units

18

5.3.4 Digital Input Address Maps

Digital Input / DI State Type Address Map

Address

Name

Data Encoding

Permissions

Value

0

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

32

Reset Total Time

Boolean

Read/Write

Write 1 to Reset Time

33

DI State

Boolean

Read

0 = Open, 1 = Closed

0 = Inactive

1 = Active Interlock

See 5.5.4 Digital Input Alarm Bitfield

Returns 1 if any alarm is active

5.3.4.1 Digital Input / DI State Type Address Map

Last Reset Date 32-Bit Integer Read Unix Time

Total Time 32-Bit Integer Read Seconds

Cycle Time 32-Bit Integer Read Seconds

34 Interlock State Boolean Read

35 Alarm Bitfield 16-Bit Bitfield Read

When accessed as a Coil,

19

5.3.4.2 Digital Input / Contacting Flow Meter Type Address Map

Digital Input / Contacting Flow Meter Address Map

Data

Encoding

0

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

32

Reset Total Flow

Boolean

Read/Write

Write 1 to Reset Flow Total

33

34

See 5.5.4 Digital Input Alarm Bitfield

Returns 1 if any alarm is active

Address Name

Last Reset Date 32-Bit Integer Read Unix Time

Total Flow 32-Bit Float Read Flow Units

Total Flow Alarm

Setpoint

Permissions Value

32-Bit Float Read/Write

0 – 1,000,000,000

Flow Units

35 Alarm Bitfield 16-Bit Bitfield Read

When accessed as a Coil,

20

5.3.4.3 Digital Input / Paddlewheel Flow Meter Type Address Map

Digital Input / Paddlewheel Flow Meter Address Map

Data

Encoding

0

1

2

3

4

Flow Units
Rate Units

5

6

7

8

9

10

Rate Units

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

32

Reset Total Flow

Boolean

Read/Write

Write 1 to Reset Flow Total

33

34

See 5.5.4 Digital Input Alarm Bitfield

Returns 1 if any alarm is active

Address Name

Last Reset Date 32-Bit Integer Read Unix Time

Total Flow 32-Bit Float Read Flow Units

Current Flowrate 32-Bit Float Read

Total Flow Alarm

Setpoint

Deadband 32-Bit Float Read/Write

Smoothing Factor 32-Bit Float Read/Write 0 – 90%

Low Alarm Setpoint 32-Bit Float Read/Write

High Alarm Setpoint 32-Bit Float Read/Write

Permissions Value

32-Bit Float Read/Write

0 – 1,000,000,000

Flow Units

Flow Units

Flow Units

Rate Units

Flow Units

Rate Units

35 Alarm Bitfield 16-Bit Bitfield Read

When accessed as a Coil,

21

5.3.4.4 Digital Input / DI Counter Type Address Map

Digital Input / DI Counter Address Map (W900 Controller Only)

Data

Encoding

0

1

2

3

4

Units

Rate Units

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

32

Reset Total

Boolean

Read/Write

Write 1 to Reset Total

33

34

See 5.5.4 Digital Input Alarm Bitfield

Returns 1 if any alarm is active

Address Name

Last Reset Date 32-Bit Integer Read Unix Time

Total Count 32-Bit Float Read Units

Current Rate 32-Bit Float Read

Total Alarm

Setpoint

Smoothing Factor 32-Bit Float Read/Write 0 – 90%

Permissions Value

32-Bit Float Read/Write

0 – 1,000,000,000

Units

35 Alarm Bitfield 16-Bit Bitfield Read

When accessed as a Coil,

22

5.3.4.5 Digital Input / Flow Monitor Type Address Map

Digital Input / Flow Monitor Address Map

Addres

s

0

1

2

3

4

Flow Units
Rate Units

5

6

7

8

9

10

11

12

13

14

Reprime Time

16-Bit Integer

Read/Write

0 – 3599 Seconds

15

Flow Alarm Delay

16-Bit Integer

Read/Write

10 – 3599 Seconds

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

32

Reset Total Flow

Boolean

Read/Write

Write 1 to Reset Flow Total

33

34

See 5.5.4 Digital Input Alarm Bitfield

Returns 1 if any alarm is active

Name Data Encoding Permissions Value

Last Reset Date 32-Bit Integer Read Unix Time

Total Feed 32-Bit Float Read Flow Units

Current Flowrate 32-Bit Float Read

Totalizer Alarm

Setpoint

32-Bit Float Read/Write

Volume/Contact 32-Bit Float Read/Write

0 – 1,000,000

Flow Units

0.001 – 1000.000

Flow Units / Pulse

Smoothing Factor 32-Bit Float Read/Write 0 – 90%

Flow Alarm Clear 32-Bit Float Read/Write 1 – 100,000 Pulses

35 Alarm Bitfield 16-Bit Bitfield Read

When accessed as a Coil,

23

5.3.5 Virtual Input Address Maps

Virtual Input / Calculation & Raw Value Type Address Map

Address

Name

Data Encoding

Permissions

Value

0

1

2

3

4

5 6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

Low Alarm

Boolean

Read

1 = Alarm Active

29

High Alarm

Boolean

Read

1 = Alarm Active

30

LoLo Alarm

Boolean

Read

1 = Alarm Active

31

HiHi Alarm

Boolean

Read

1 = Alarm Active

32

1 = Out-Of-Range or

Input Failure Alarm Active

34

Status

16-Bit Status

Read

See 5.4 Status Register Codes

See 5.5.5 Virtual Input Alarm

Bitfield

5.3.5.1 Virtual Input / Calculation & Raw Value Type Address Map

Primary Value 32-Bit Float Read Virtual Input Units

Deadband 32-Bit Float Read/Write Virtual Input Units

Smoothing Factor 32-Bit Float Read/Write 0 – 90%

LoLo Alarm Setpoint 32-Bit Float Read/Write Virtual Input Units

Low Alarm Setpoint 32-Bit Float Read/Write Virtual Input Units

High Alarm Setpoint 32-Bit Float Read/Write Virtual Input Units

HiHi Alarm Setpoint 32-Bit Float Read/Write Virtual Input Units

33 Misc. Alarm Boolean Read

35 Alarm Bitfield 16-Bit Bitfield Read

24

5.3.5.2 Virtual Input / Redundant Sensor Type Address Map

Virtual Input / Redundant Sensor Type Address Map (W900 Controller Only)

Address

Name

Data Encoding

Permissions

Value

0

1

2

3

4

5 6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

32

Deviation Alarm

Boolean

Read

1 = Alarm Active

33

Misc. Alarm

Boolean

Read

1 = Input Failure Alarm Active

34

Status

16-Bit Status

Read

See 5.4 Status Register Codes

See 5.5.5 Virtual Input Alarm

Bitfield

Primary Value 32-Bit Float Read Virtual Input Units

Deadband 32-Bit Float Read/Write Virtual Input Units

Deviation Alarm

Setpoint

35 Alarm Bitfield 16-Bit Bitfield Read

32-Bit Float Read/Write Virtual Input Units

25

5.3.5.3 Virtual Input / Disturbance Type Address Map

Virtual Input / Disturbance Type Address Map (W900 Controller Only)

Address

Name

Data Encoding

Permissions

Value

0

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

32

33

34

Status

16-Bit Status

Read

See 5.4 Status Register Codes

See 5.5.5 Virtual Input Alarm

Bitfield

Primary Value 32-Bit Float Read Unitless

Minimum Value 32-Bit Float Read/Write Unitless

Maximum Value 32-Bit Float Read/Write Unitless

Smoothing Factor 32-Bit Float Read/Write 0 – 90%

Disturbance Setpoint 32-Bit Float Read/Write Disturbance Input Units

Max Disturbance 32-Bit Float Read/Write Disturbance Input Units

35 Alarm Bitfield 16-Bit Bitfield Read

26

5.3.6 Relay Output Address Maps

Relay Output / Manual Control Address Map

Address

Name

Data Encoding

Permissions

Value

0

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Relay State

Boolean

Read

0 = Off, 1 = On

32

Reset Time Total

Boolean

Read/Write

Write 1 to Reset Time Total

0 = Hand, 1 = Off,

2 = Auto Mode

34

Status

16-Bit Status

Read

See 5.4 Status Register Codes

See 5.5.6 Relay Output Alarm Bitfield

Returns 1 if any alarm is active

5.3.6.1 Relay Output / Manual Control Mode Address Map

Time On 32-Bit Integer Read Seconds

Total Time 32-Bit Integer Read Seconds

On Time Delay 32-Bit Integer Read/Write 0 – 86,399 Seconds

Off Time Delay 32-Bit Integer Read/Write 0 – 86,399 Seconds

Hand Time Limit 32-Bit Integer Read/Write 0 – 86,399 Seconds

33 HOA Setting 16-Bit Integer Read/Write

35 Alarm Bitfield 16-Bit Bitfield Read

When accessed as a Coil,

27

5.3.6.2 Relay Output / On/Off & On/Off Disturbance Control Mode Address Map

Relay Output / On/Off & On/Off Disturbance Control Address Map

Data

Encoding

0

1

2

3

4

5

6

7

8

9

10

11

12

13

14

Duty Cycle Period

16-Bit Integer

Read/Write

0 – 3599 Seconds

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

Reset Output Timeout

Boolean

Read/Write

Write 1 to Reset Output Timeout

31

Relay State

Boolean

Read

0 = Off, 1 = On

32

Reset Time Total

Boolean

Read/Write

Write 1 to Reset Time Total

0 = Hand, 1 = Off,

2 = Auto Mode

34

Status

16-Bit Status

Read

See 5.4 Status Register Codes

See 5.5.6 Relay Output Alarm Bitfield

Returns 1 if any alarm is active

Address Name

Time On 32-Bit Integer Read Seconds

Total Time 32-Bit Integer Read Seconds

Setpoint 32-Bit Float Read/Write Input Sensor Units

Deadband 32-Bit Float Read/Write Input Sensor Units

Duty Cycle 32-Bit Float Read/Write 0 – 100%

Permissions Value

On Time Delay 32-Bit Integer Read/Write 0 – 86,399 Seconds

Off Time Delay 32-Bit Integer Read/Write 0 – 86,399 Seconds

Output Time Limit 32-Bit Integer Read/Write 0 – 86,399 Seconds

Hand Time Limit 32-Bit Integer Read/Write 0 – 86,399 Seconds

33 HOA Setting 16-Bit Integer Read/Write

35 Alarm Bitfield 16-Bit Bitfield Read

When accessed as a Coil,

28

5.3.6.3 Relay Output / Dual Setpoint Control Mode Address Map

Relay Output / Dual Setpoint Control Address Map

Data

Encoding

0

1

2

3

4

5

6

7

8

9

10

11

12

13

14

Duty Cycle Period

16-Bit Integer

Read/Write

0 – 3599 Seconds

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

Reset Output Timeout

Boolean

Read/Write

Write 1 to Reset Output Timeout

31

Relay State

Boolean

Read

0 = Off, 1 = On

32

Reset Time Total

Boolean

Read/Write

Write 1 to Reset Time Total

0 = Hand, 1 = Off,

2 = Auto Mode

34

Status

16-Bit Status

Read

See 5.4 Status Register Codes

See 5.5.6 Relay Output Alarm Bitfield

Returns 1 if any alarm is active

Address Name

Time On 32-Bit Integer Read Seconds

Total Time 32-Bit Integer Read Seconds

Setpoint 1 32-Bit Float Read/Write Input Sensor Units

Setpoint 2 32-Bit Float Read/Write Input Sensor Units

Deadband 32-Bit Float Read/Write Input Sensor Units

Duty Cycle 32-Bit Float Read/Write 0 – 100%

Permissions Value

On Time Delay 32-Bit Integer Read/Write 0 – 86,399 Seconds

Off Time Delay 32-Bit Integer Read/Write 0 – 86,399 Seconds

Output Time Limit 32-Bit Integer Read/Write 0 – 86,399 Seconds

Hand Time Limit 32-Bit Integer Read/Write 0 – 86,399 Seconds

33 HOA Setting 16-Bit Integer Read/Write

35 Alarm Bitfield 16-Bit Bitfield Read

When accessed as a Coil,

29

5.3.6.4 Relay Output / Time Proportional Control Mode Address Map

Relay Output / Time Proportional Control Address Map

Data

Encoding

0

1

2

32-Bit

Integer

3

4

32-Bit

Integer

5

6

7

8

9

10

11

12

13

14

32-Bit

Integer

15

16

17

18

19

20

21

22

32-Bit

Integer

23

24

25

26

27

28

29

Reset Output

Timeout

31

Relay State

Boolean

Read

0 = Off, 1 = On

32

Reset Time Total

Boolean

Read/Write

Write 1 to Reset Time Total

16-Bit

Integer

0 = Hand, 1 = Off,

2 = Auto Mode

16-Bit
Status

See 5.5.6 Relay Output Alarm Bitfield

Returns 1 if any alarm is active

Address Name

Time On

Total Time

Cycle Time

Setpoint 32-Bit Float Read/Write Input Sensor Units

Proportional Band 32-Bit Float Read/Write Input Sensor Units

Current Cycle 32-Bit Float Read Seconds

Sample Period

32-Bit

Integer

Permissions Value

Read Seconds

Read Seconds

Read Seconds

Read/Write 10 – 86,399 Seconds

Output Time Limit

Hand Time Limit

30

33 HOA Setting

34 Status

35 Alarm Bitfield

Read/Write 0 – 86,399 Seconds

32-Bit

Integer

Read/Write 0 – 86,399 Seconds

Boolean Read/Write Write 1 to Reset Output Timeout

Read/Write

Read See 5.4 Status Register Codes

16-Bit

Bitfield

Read

When accessed as a Coil,

30

5.3.6.5 Relay Output / Intermittent Sampling Control Mode Address Map

Relay Output / Intermittent Sampling Control Address Map

Data

Encoding

0

1

2

3

4

5

6

7

8

9

10

11

12

13

14

Sample Time

16-Bit Integer

Read/Write

10 – 3599 Seconds

15

Hold Time

16-Bit Integer

Read/Write

10 – 3599 Seconds

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

Reset Output Timeout

Boolean

Read/Write

Write 1 to Reset Output Timeout

31

Relay State

Boolean

Read

0 = Off, 1 = On

32

Reset Time Total

Boolean

Read/Write

Write 1 to Reset Time Total

0 = Hand, 1 = Off,

2 = Auto Mode

34

Status

16-Bit Status

Read

See 5.4 Status Register Codes

See 5.5.6 Relay Output Alarm Bitfield

Returns 1 if any alarm is active

Address Name

Time On 32-Bit Integer Read Seconds

Total Time 32-Bit Integer Read Seconds

Cycle Time 32-Bit Integer Read Seconds

Setpoint 32-Bit Float Read/Write Input Sensor Units

Proportional Band 32-Bit Float Read/Write Input Sensor Units

Max Blowdown 32-Bit Integer Read/Write 0 – 86,399 Seconds

Permissions Value

Wait Time 32-Bit Integer Read/Write 0 – 86,399 Seconds

Output Time Limit 32-Bit Integer Read/Write 0 – 86,399 Seconds

Hand Time Limit 32-Bit Integer Read/Write 0 – 86,399 Seconds

33 HOA Setting 16-Bit Integer Read/Write

35 Alarm Bitfield 16-Bit Bitfield Read

When accessed as a Coil,

31

5.3.6.6 Relay Output / Bleed And Feed Control Mode Address Map

Relay Output / Bleed And Feed Control Address Map

Data

Encoding

0

1

2

3

4

5

6 7

8

9 10

11

12 13

14

15 16

17

18 19

20

21 22

23

24 25

26

27 28

29

30

Reset Output Timeout

Boolean

Read/Write

Write 1 to Reset Output Timeout

31

Relay State

Boolean

Read

0 = Off, 1 = On

32

Reset Time Total

Boolean

Read/Write

Write 1 to Reset Time Total

0 = Hand, 1 = Off,

2 = Auto Mode

34

Status

16-Bit Status

Read

See 5.4 Status Register Codes

See 5.5.6 Relay Output Alarm Bitfield

Returns 1 if any alarm is active

Address Name

Time On 32-Bit Integer Read Seconds

Total Time 32-Bit Integer Read Seconds

Permissions Value

Feed Time Limit 32-Bit Integer Read/Write 0 – 86,399 Seconds

Hand Time Limit 32-Bit Integer Read/Write 0 – 86,399 Seconds

33 HOA Setting 16-Bit Integer Read/Write

35 Alarm Bitfield 16-Bit Bitfield Read

When accessed as a Coil,

32

5.3.6.7 Relay Output / Bleed Then Feed Control Mode Address Map

Relay Output / Bleed Then Feed Control Mode Address Map

Data

Encoding

0

1

2

3

4

5

6

7

8 9 10 11 12 13 14 15 16 17 18 19 20

21

22

23

24 25 26 27

Reset Timer

Boolean

Read/Write

Write 1 to Reset Feed Timer

28

29

30

Reset Output Timeout

Boolean

Read/Write

Write 1 to Reset Output Timeout

31

Relay State

Boolean

Read

0 = Off, 1 = On

32

Reset Time Total

Boolean

Read/Write

Write 1 to Reset Time Total

0 = Hand, 1 = Off,

2 = Auto Mode

34

Status

16-Bit Integer

Read

See 5.4 Status Register Codes

See 5.5.6 Relay Output Alarm Bitfield

Returns 1 if any alarm is active

Address Name

Time On 32-Bit Integer Read Seconds

Total Time 32-Bit Integer Read Seconds

Remaining Feed Time 32-Bit Integer Read Seconds

Bleed Time 32-Bit Integer Read Seconds

Permissions Value

Feed Percentage 32-Bit Float Read/Write 0 – 100%

Feed Time Limit 32-Bit Integer Read/Write 0 – 86,399 Seconds

Hand Time Limit 32-Bit Integer Read/Write 0 – 86,399 Seconds

33 HOA Setting 16-Bit Integer Read/Write

35 Alarm Bitfield 16-Bit Bitfield Read

When accessed as a Coil,

33

5.3.6.8 Relay Output / Flow Timer Control Mode Address Map

Relay Output / Flow Timer Control Mode Address Map

Data

Encoding

0

1

2

32-Bit

Integer

3

4

32-Bit

Integer

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

32-Bit

Integer

23

24

25

26

27

Reset Timer

Boolean

Read/Write

Write 1 to Reset Feed Timer

28

29

30

Reset Output Timeout

Boolean

Read/Write

Write 1 to Reset Output Timeout

31

Relay State

Boolean

Read

0 = Off, 1 = On

32

Reset Time Total

Boolean

Read/Write

Write 1 to Reset Time Total

16-Bit

Integer

0 = Hand, 1 = Off,

2 = Auto Mode

16-Bit

Integer

See 5.5.6 Relay Output Alarm Bitfield

Returns 1 if any alarm is active

Address Name

Time On

Total Time

Remaining Feed Time

Accumulator Volume

Setpoint

Accumulator Total 32-Bit Float Read Flow Units

Permissions Value

32-Bit

Integer

Read Seconds

Read Seconds

Read Seconds

32-Bit Float Read/Write 1 – 1,000,000 Flow Units

Feed Duration

Output Time Limit

Hand Time Limit

33 HOA Setting

34 Status

35 Alarm Bitfield

32-Bit

Integer

32-Bit

Integer

16-Bit

Bitfield

Read/Write 0 – 86,399 Seconds

Read/Write 0 – 86,399 Seconds

Read/Write 0 – 86,399 Seconds

Read/Write

Read See 5.4 Status Register Codes

Read

When accessed as a Coil,

34

5.3.6.9 Relay Output / Counter Timer Control Mode Address Map

Relay Output / Counter Timer Control Mode Address Map (W900 Controller Only)

Data

Encoding

0

1

2

32-Bit

Integer

3

4

32-Bit

Integer

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

32-Bit

Integer

23

24

25

26

27

Reset Timer

Boolean

Read/Write

Write 1 to Reset Feed Timer

28

29

30

Reset Output Timeout

Boolean

Read/Write

Write 1 to Reset Output Timeout

31

Relay State

Boolean

Read

0 = Off, 1 = On

32

Reset Time Total

Boolean

Read/Write

Write 1 to Reset Time Total

16-Bit

Integer

0 = Hand, 1 = Off,

2 = Auto Mode

16-Bit

Integer

See 5.5.6 Relay Output Alarm Bitfield

Returns 1 if any alarm is active

Address Name

Time On

Total Time

Remaining Feed Time

Accumulator Setpoint 32-Bit Float Read/Write 1 – 1,000,000 Units

Accumulator Total 32-Bit Float Read Units

32-Bit

Integer

Permissions Value

Read Seconds

Read Seconds

Read Seconds

Feed Duration

Output Time Limit

Hand Time Limit

33 HOA Setting

34 Status

35 Alarm Bitfield

32-Bit

Integer

32-Bit

Integer

16-Bit

Bitfield

Read/Write 0 – 86,399 Seconds

Read/Write 0 – 86,399 Seconds

Read/Write 0 – 86,399 Seconds

Read/Write

Read See 5.4 Status Register Codes

Read

When accessed as a Coil,

35

5.3.6.10 Relay Output / Target PPM Control Mode Address Map

Relay Output / Target PPM Control Mode Address Map (W900 Controller Only)

Address

Name

Data Encoding

Permissions

Value

0

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

Hour

19

20

21

22

23

24

25

26

27

Reset Timer

Boolean

Read/Write

Write 1 to Reset Feed Timer

28

29

30

Reset Output Timeout

Boolean

Read/Write

Write 1 to Reset Output Timeout

31

Relay State

Boolean

Read

0 = Off, 1 = On

32

Reset Time Total

Boolean

Read/Write

Write 1 to Reset Time Total

0 = Hand, 1 = Off,

2 = Auto Mode

34

Status

16-Bit Integer

Read

See 5.4 Status Register Codes

See 5.5.6 Relay Output Alarm Bitfield

Returns 1 if any alarm is active

Time On 32-Bit Integer Read Seconds

Total Time 32-Bit Integer Read Seconds

Remaining Feed Time 32-Bit Integer Read Seconds

Accumulator Volume

Setpoint

32-Bit Float Read/Write 1 – 1,000,000 Flow Units

Accumulator Total 32-Bit Float Read Flow Units

Target PPM 32-Bit Float Read/Write 1 – 1,000,000 ppm

Specific Gravity

Of Product

32-Bit Float Read/Write

Pump Capacity 32-Bit Float Read/Write

0 – 9.999 mg/l

0 – 10,000 Volume Units

Pump Setting 32-Bit Float Read/Write 0 – 100%

Output Time Limit 32-Bit Integer Read/Write 0 – 86,399 Seconds

Low Cycles Limit 32-Bit Float Read/Write 0.00 – 100.00

Hand Time Limit 32-Bit Integer Read/Write 0 – 86,399 Seconds

33 HOA Setting 16-Bit Integer Read/Write

35 Alarm Bitfield 16-Bit Bitfield Read

When accessed as a Coil,

36

5.3.6.11 Relay Output / PPM By Volume Control Mode Address Map

Relay Output / PPM By Volume Control Mode Address Map (W900 Controller Only)

Address

Name

Data Encoding

Permissions

Value

0

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

Reset Timer

Boolean

Read/Write

Write 1 to Reset Feed Timer

28

29

30

Reset Output Timeout

Boolean

Read/Write

Write 1 to Reset Output Timeout

31

Relay State

Boolean

Read

0 = Off, 1 = On

32

Reset Time Total

Boolean

Read/Write

Write 1 to Reset Time Total

0 = Hand, 1 = Off,

2 = Auto Mode

34

Status

16-Bit Integer

Read

See 5.4 Status Register Codes

See 5.5.6 Relay Output Alarm Bitfield

Returns 1 if any alarm is active

Time On 32-Bit Integer Read Seconds

Total Time 32-Bit Integer Read Seconds

Remaining Feed

Volume

Accumulator Volume

Setpoint

32-Bit Float Read Volume Units

32-Bit Float Read/Write 1 – 1,000,000 Flow Units

Accumulator Total 32-Bit Float Read Flow Units

Target PPM 32-Bit Float Read/Write 1 – 1,000,000 ppm

Specific Gravity

Of Product

32-Bit Float Read/Write

0 – 9.999 mg/l

Output Time Limit 32-Bit Integer Read/Write 0 – 86,399 Seconds

Low Cycles Limit 32-Bit Float Read/Write 0.00 – 100.00

Hand Time Limit 32-Bit Integer Read/Write 0 – 86,399 Seconds

33 HOA Setting 16-Bit Integer Read/Write

35 Alarm Bitfield 16-Bit Bitfield Read

When accessed as a Coil,

37

5.3.6.12 Relay Output / Flow Meter Ratio Control Mode Address Map

Relay Output / Flow Meter Ratio Control Mode Address Map (W900 Controller Only)

Data

Encoding

0

1

2

32-Bit

Integer

3

4

5

6

7

8

9

10

Setpoint

11

12

13

14

15

16

17

18

19

20

21

22

32-Bit

Integer

23

24

25

26

27

Reset Timer

Boolean

Read/Write

Write 1 to Reset Feed Timer

28

29

30

Reset Output Timeout

Boolean

Read/Write

Write 1 to Reset Output Timeout

31

Relay State

Boolean

Read

0 = Off, 1 = On

32

Reset Time Total

Boolean

Read/Write

Write 1 to Reset Time Total

16-Bit

Integer

0 = Hand, 1 = Off,

2 = Auto Mode

16-Bit

Integer

See 5.5.6 Relay Output Alarm Bitfield

Returns 1 if any alarm is active

Address Name

Time On

Total Time

Remaining Volume 32-Bit Float Read Flow Units

Accumulator Volume

Setpoint

Accumulator Total 32-Bit Float Read Flow Units

Bleed Volume

Bleed Cycle Volume 32-Bit Float Read Flow Units

Permissions Value

32-Bit

Integer

Read Seconds

Read Seconds

32-Bit Float Read/Write 1 – 1,000,000 Flow Units

32-Bit Float Read/Write 1 – 1,000,000 Flow Units

Output Time Limit

Hand Time Limit

33 HOA Setting

34 Status

35 Alarm Bitfield

32-Bit

Integer

16-Bit

Bitfield

Read/Write 0 – 86,399 Seconds

Read/Write 0 – 86,399 Seconds

Read/Write

Read See 5.4 Status Register Codes

Read

When accessed as a Coil,

38

5.3.6.13 Relay Output / Volumetric Blend Control Mode Address Map

Relay Output / Volumetric Blend Control Mode Address Map (W900 Controller Only)

Data

Encoding

0

1

2

32-Bit

Integer

3

4

5

6

7

8

9

10

Setpoint

11

12

13

14

15

16

17

18

19

20

21

22

32-Bit

Integer

23

24

25

26

27

Reset Timer

Boolean

Read/Write

Write 1 to Reset Feed Timer

28

29

30

Reset Output Timeout

Boolean

Read/Write

Write 1 to Reset Output Timeout

31

Relay State

Boolean

Read

0 = Off, 1 = On

32

Reset Time Total

Boolean

Read/Write

Write 1 to Reset Time Total

16-Bit

Integer

0 = Hand, 1 = Off,

2 = Auto Mode

16-Bit

Integer

See 5.5.6 Relay Output Alarm Bitfield

Returns 1 if any alarm is active

Address Name

Time On

Total Time

Remaining Volume 32-Bit Float Read Flow Units

Accumulator Volume

Setpoint

Cycle Volume 32-Bit Float Read Flow Units

Bleed Volume

Permissions Value

32-Bit

Integer

Read Seconds

Read Seconds

32-Bit Float Read/Write 1 – 1,000,000 Flow Units

32-Bit Float Read/Write 1 – 1,000,000 Flow Units

Output Time Limit

Hand Time Limit

33 HOA Setting

34 Status

35 Alarm Bitfield

32-Bit

Integer

16-Bit

Bitfield

Read/Write 0 – 86,399 Seconds

Read/Write 0 – 86,399 Seconds

Read/Write

Read See 5.4 Status Register Codes

Read

When accessed as a Coil,

39

5.3.6.14 Relay Output / Percent Timer Control Mode Address Map

Relay Output / Percent Timer Control Mode Address Map

Address

Name

Data Encoding

Permissions

Value

0

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Relay State

Boolean

Read

0 = Off, 1 = On

32

Reset Time Total

Boolean

Read/Write

Write 1 to Reset Time Total

0 = Hand, 1 = Off,

2 = Auto Mode

34

Status

16-Bit Integer

Read

See 5.4 Status Register Codes

See 5.5.6 Relay Output Alarm Bitfield

Returns 1 if any alarm is active

Time On 32-Bit Integer Read Seconds

Total Time 32-Bit Integer Read Seconds

Cycle Time 32-Bit Integer Read Seconds

Feed Percentage 32-Bit Float Read/Write 0 – 100%

Feed Time Limit 32-Bit Integer Read/Write 0 – 86,399 Seconds

Hand Time Limit 32-Bit Integer Read/Write 0 – 86,399 Seconds

33 HOA Setting 16-Bit Integer Read/Write

35 Alarm Bitfield 16-Bit Bitfield Read

When accessed as a Coil,

40

5.3.6.15 Relay Output / Event Timer Control Mode Address Map

Relay Output / Event Timer Address Map

Data

Encoding

0

1

2

3

4

5

6

7

8

9

10

11

12

0 – 86,399

Seconds Since Midnight

13

14

15

16

17

18

19

20

21

22

23

24

0 – 86,399

Seconds Since Midnight

25

26

27

28

29

30

Active Timer Event

16-Bit Integer

Read

Event Number

31

Relay State

Boolean

Read

0 = Off, 1 = On

32

Reset Time Total

Boolean

Read/Write

Write 1 to Reset Time Total

0 = Hand, 1 = Off,

2 = Auto Mode

34

Status

16-Bit Integer

Read

See 5.4 Status Register Codes

See 5.5.6 Relay Output Alarm Bitfield

Returns 1 if any alarm is active

Address Name

Time On 32-Bit Integer Read Seconds

Total Time 32-Bit Integer Read Seconds

Cycle Time 32-Bit Integer Read Seconds

Event 5 Start Time 32-Bit Integer Read/Write

Event 5 Duration 32-Bit Integer Read/Write 0 – 86,399 Seconds

Event 4 Start Time 32-Bit Integer Read/Write

Event 4 Duration 32-Bit Integer Read/Write 0 – 86,399 Seconds

Event 3 Start Time 32-Bit Integer Read/Write

Permissions Value

0 – 86,399

Seconds Since Midnight

0 – 86,399

Seconds Since Midnight

Event 3 Duration 32-Bit Integer Read/Write 0 – 86,399 Seconds

Event 2 Start Time 32-Bit Integer Read/Write

0 – 86,399

Seconds Since Midnight

Event 2 Duration 32-Bit Integer Read/Write 0 – 86,399 Seconds

Event 1 Start Time 32-Bit Integer Read/Write

Event 1 Duration 32-Bit Integer Read/Write 0 – 86,399 Seconds

Hand Time Limit 32-Bit Integer Read/Write 0 – 86,399 Seconds

33 HOA Setting 16-Bit Integer Read/Write

35 Alarm Bitfield 16-Bit Bitfield Read

When accessed as a Coil,

41

5.3.6.16 Relay Output / Biocide Timer Control Mode Address Map

Relay Output / Biocide Timer Control Mode Address Map

Address

Name

Data Encoding

Permissions

Value

0

1

2

3

4

5

6

7

8

Setpoint

9

10

11

12

0 – 86,399

Seconds Since Midnight

13

14

15

16

17

18

19

20

0 – 86,399

Seconds Since Midnight

21

22

23

24

25

26

27

28

29

30

Active Timer Event

16-Bit Integer

Read

Event Number

31

Relay State

Boolean

Read

0 = Off, 1 = On

32

Reset Time Total

Boolean

Read/Write

Write 1 to Reset Time Total

0 = Hand, 1 = Off,

2 = Auto Mode

34

Status

16-Bit Integer

Read

See 5.4 Status Register Codes

See 5.5.6 Relay Output Alarm Bitfield

Returns 1 if any alarm is active

Time On 32-Bit Integer Read Seconds

Total Time 32-Bit Integer Read Seconds

Cycle Time 32-Bit Integer Read Seconds

Bleed Lockout 32-Bit Integer Read/Write 0 – 86,399 Seconds

Prebleed To

Prebleed Time 32-Bit Integer Read/Write 0 – 86,399 Seconds

Event 4 Start Time 32-Bit Integer Read/Write

Event 4 Duration 32-Bit Integer Read/Write 0 – 86,399 Seconds

Event 3 Start Time 32-Bit Integer Read/Write

Event 3 Duration 32-Bit Integer Read/Write 0 – 86,399 Seconds

Event 2 Start Time 32-Bit Integer Read/Write

Event 2 Duration 32-Bit Integer Read/Write 0 – 86,399 Seconds

Event 1 Start Time 32-Bit Integer Read/Write

Event 1 Duration 32-Bit Integer Read/Write 0 – 86,399 Seconds

32-Bit Float Read/Write Input Sensor Units

0 – 86,399

Seconds Since Midnight

0 – 86,399

Seconds Since Midnight

Hand Time Limit 32-Bit Integer Read/Write 0 – 86,399 Seconds

33 HOA Setting 16-Bit Integer Read/Write

35 Alarm Bitfield 16-Bit Bitfield Read

When accessed as a Coil,

42

5.3.6.17 Relay Output / Spike Control Mode Address Map

Relay Output / Spike Control Mode Address Map

Address

Name

Data Encoding

Permissions

Value

0

1

2

3

4

5

6

7

8

9

10

11

12

13

14

Duty Cycle Period

16-Bit Integer

Read/Write

0 – 3599 Seconds

15

16

17

18

19

20

0 – 86,399

Seconds Since Midnight

21

22

23

24

25

26

27

28

29

30

Active Timer Event

16-Bit Integer

Read

Event Number

31

Relay State

Boolean

Read

0 = Off, 1 = On

32

Reset Time Total

Boolean

Read/Write

Write 1 to Reset Time Total

0 = Hand, 1 = Off,

2 = Auto Mode

34

Status

16-Bit Integer

Read

See 5.4 Status Register Codes

See 5.5.6 Relay Output Alarm Bitfield

Returns 1 if any alarm is active

Time On 32-Bit Integer Read Seconds

Total Time 32-Bit Integer Read Seconds

Spike Event Time 32-Bit Integer Read Seconds

Setpoint 32-Bit Float Read/Write Input Sensor Units

Spike Setpoint 32-Bit Float Read/Write Input Sensor Units

Deadband 32-Bit Float Read/Write Input Sensor Units

Duty Cycle 32-Bit Float Read/Write 0 – 100%

Event 3 Start Time 32-Bit Integer Read/Write

Event 3 Duration 32-Bit Integer Read/Write 0 – 86,399 Seconds

Event 2 Start Time 32-Bit Integer Read/Write

Event 2 Duration 32-Bit Integer Read/Write 0 – 86,399 Seconds

Event 1 Start Time 32-Bit Integer Read/Write

Event 1 Duration 32-Bit Integer Read/Write 0 – 86,399 Seconds

Hand Time Limit 32-Bit Integer Read/Write 0 – 86,399 Seconds

33 HOA Setting 16-Bit Integer Read/Write

0 – 86,399

Seconds Since Midnight

0 – 86,399

Seconds Since Midnight

35 Alarm Bitfield 16-Bit Bitfield Read

When accessed as a Coil,

43

5.3.6.18 Relay Output / Probe Wash Control Mode Address Map

Relay Output / Probe Wash Control Mode Address Map

Address

Name

Data Encoding

Permissions

Value

0

1

2

3

4

5

6

7

8

Seconds Since Midnight

9

10

11

12

0 – 86,399

Seconds Since Midnight

13

14

15

16

17

18

19

20

0 – 86,399

Seconds Since Midnight

21

22

23

24

25

26

27

28

29

30

Active Timer Event

16-Bit Integer

Read

Event Number

31

Relay State

Boolean

Read

0 = Off, 1 = On

32

Reset Time Total

Boolean

Read/Write

Write 1 to Reset Time Total

0 = Hand, 1 = Off,

2 = Auto Mode

34

Status

16-Bit Integer

Read

See 5.4 Status Register Codes

See 5.5.6 Relay Output Alarm Bitfield

Returns 1 if any alarm is active

Time On 32-Bit Integer Read Seconds

Total Time 32-Bit Integer Read Seconds

Cycle Time 32-Bit Integer Read Seconds

Hold Time Limit 32-Bit Integer Read/Write 0 – 3599 Seconds

Event 5 Start Time 32-Bit Integer Read/Write

Event 5 Duration 32-Bit Integer Read/Write 0 – 86,399 Seconds

Event 4 Start Time 32-Bit Integer Read/Write

Event 4 Duration 32-Bit Integer Read/Write 0 – 86,399 Seconds

Event 3 Start Time 32-Bit Integer Read/Write

Event 3 Duration 32-Bit Integer Read/Write 0 – 86,399 Seconds

Event 2 Start Time 32-Bit Integer Read/Write

Event 2 Duration 32-Bit Integer Read/Write 0 – 86,399 Seconds

Event 1 Start Time 32-Bit Integer Read/Write

Event 1 Duration 32-Bit Integer Read/Write 0 – 86,399 Seconds

0 – 86,399

0 – 86,399

Seconds Since Midnight

0 – 86,399

Seconds Since Midnight

Hand Time Limit 32-Bit Integer Read/Write 0 – 86,399 Seconds

33 HOA Setting 16-Bit Integer Read/Write

35 Alarm Bitfield 16-Bit Bitfield Read

When accessed as a Coil,

44

5.3.6.19 Relay Output / Plating Control Mode Address Map

Relay Output / Plating Control Address Map (W600 Controller Only)

Data

Encoding

0

1

2

3

4

5

6

7

8

9

10

11

12

13

14

Duty Cycle Period

16-Bit Integer

Read/Write

0 – 3599 Seconds

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

Reset Output Timeout

Boolean

Read/Write

Write 1 to Reset Output Timeout

31

Relay State

Boolean

Read

0 = Off, 1 = On

32

Reset Total

Boolean

Read/Write

Write 1 to Reset Total

0 = Hand, 1 = Off,

2 = Auto Mode

34

Status

16-Bit Status

Read

See 5.4 Status Register Codes

See 5.5.6 Relay Output Alarm Bitfield

Returns 1 if any alarm is active

Address Name

Time On 32-Bit Integer Read Seconds

Total Time 32-Bit Integer Read Seconds

Total Feed Volume 32-Bit Float Read Volume Units

Setpoint 32-Bit Float Read/Write Input Sensor Units

Deadband 32-Bit Float Read/Write Input Sensor Units

Duty Cycle 32-Bit Float Read/Write 0 – 100%

Pump Setting 32-Bit Float Read/Write 0 – 100%

Permissions Value

On Time Delay 32-Bit Integer Read/Write 0 – 86,399 Seconds

Off Time Delay 32-Bit Integer Read/Write 0 – 86,399 Seconds

Output Time Limit 32-Bit Integer Read/Write 0 – 86,399 Seconds

Total Turns 32-Bit Float Read Turns

Turnover Limit 32-Bit Float Read/Write 0 – 100 Turns

Hand Time Limit 32-Bit Integer Read/Write 0 – 86,399 Seconds

33 HOA Setting 16-Bit Integer Read/Write

35 Alarm Bitfield 16-Bit Bitfield Read

When accessed as a Coil,

45

5.3.6.20 Relay Output / Plating Follow Control Mode Address Map

Relay Output / Plating Follow Control Address Map (W600 Controller Only)

Address

Name

Data Encoding

Permissions

Value

0

1

2

3

4

5

6

7

8 9

10

11 12

13

14 15

16

17

18

19

20 21

22

23

24

25

26 27

28

29

30

31

Relay State

Boolean

Read

0 = Off, 1 = On

32

Reset Time Total

Boolean

Read/Write

Write 1 to Reset Time Total

0 = Hand, 1 = Off,

2 = Auto Mode

34

Status

16-Bit Status

Read

See 5.4 Status Register Codes

See 5.5.6 Relay Output Alarm Bitfield

Returns 1 if any alarm is active

Time On 32-Bit Integer Read Seconds

Total Time 32-Bit Integer Read Seconds

Total Feed Volume 32-Bit Float Read Volume Units

Pump Setting 32-Bit Float Read/Write 0 – 100%

Hand Time Limit 32-Bit Integer Read/Write 0 – 86,399 Seconds

33 HOA Setting 16-Bit Integer Read/Write

35 Alarm Bitfield 16-Bit Bitfield Read

When accessed as a Coil,

46

5.3.6.21 Relay Output / Lag Output Control Mode Address Map

Relay Output / Lag Output Address Map

Address

Field

Data Encoding

Permissions

Value

0

1

2

3

4

5

6

7

8

9

10

11

12

Activation

Delay Time †‡

13

14

15

16

17

18

Cycle Time †‡

19

No. of Activated

Outputs †‡

21

22

23

24

25

26

27

28

29

Reset Output

Timeout

31

Relay State

Boolean

Read

1 = Relay On

32

Reset Time Total

Boolean

Read/Write

Write 1 to Reset Time Total

0 = Hand, 1 = Off,

2 = Auto Mode

34

Status

16-Bit Status

Read

See 5.4 Status Register Codes

See 5.5.6 Relay Output Alarm Bitfield

Returns 1 if any alarm is active

Time On 32-Bit Integer Read Seconds

Total Time 32-Bit Integer Read Seconds

Setpoint 1 ‡ 32-Bit Float Read/Write Input Sensor Units

Setpoint 2 ‡ 32-Bit Float Read/Write Input Sensor Units

Deadband ‡ 32-Bit Float Read/Write Input Sensor Units

32-Bit Integer Read/Write 0 – 86,399 Seconds

Wear Level

Cycle Time †‡

Current

Activation Time †‡

Current Wear Level

20

32-Bit Integer Read/Write 10 – 86,399 Seconds

32-Bit Integer Read Seconds

32-Bit Integer Read Seconds

16-Bit Integer Read Count

Output Time Limit 32-Bit Integer Read/Write 0 – 86,399 Seconds

30

Boolean Read/Write Write 1 to Reset Output Timeout

33 HOA Setting 16-Bit Integer Read/Write

35 Alarm Bitfield 16-Bit Bitfield Read

† Field is only defined for Lag Outputs configured as the “Last Lag” in the chain.
‡ Field is only meaningful for certain configurations of Lead-Lag chains.

When accessed as a Coil,

47

5.3.6.22 Relay Output / Alarm Control Mode Address Map

Relay Output / Alarm Control Mode Address Map

Address

Name

Data Encoding

Permissions

Value

0

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

Relay State

Boolean

Read

0 = Off, 1 = On

32

Reset Time Total

Boolean

Read/Write

Write 1 to Reset Time Total

0 = Hand, 1 = Off,

2 = Auto Mode

34

Status

16-Bit Integer

Read

See 5.4 Status Register Codes

See 5.5.6 Relay Output Alarm Bitfield

Returns 1 if any alarm is active

Time On 32-Bit Integer Read Seconds

Total Time 32-Bit Integer Read Seconds

Hand Time Limit 32-Bit Integer Read/Write 0 – 86,399 Seconds

33 HOA Setting 16-Bit Integer Read/Write

35 Alarm Bitfield 16-Bit Bitfield Read

When accessed as a Coil,

48

5.3.7 Pulse Relay Output Address Maps

Pulse Relay Output / Manual Control Address Map

Address

Name

Data Encoding

Permissions

Value

0

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

32

Reset Time Total

Boolean

Read/Write

Write 1 to Reset Time Total

0 = Hand, 1 = Off,

2 = Auto Mode

34

Status

16-Bit Status

Read

See 5.4 Status Register Codes

See 5.5.6 Relay Output Alarm Bitfield

Returns 1 if any alarm is active

5.3.7.1 Pulse Relay Output / Manual Control Mode Address Map

Time On 32-Bit Integer Read Seconds

Total Time 32-Bit Integer Read Seconds

Output 32-Bit Float Read Percent

On Time Delay 32-Bit Integer Read/Write 0 – 86,399 Seconds

Off Time Delay 32-Bit Integer Read/Write 0 – 86,399 Seconds

Hand Output 32-Bit Float Read/Write 0 – 100%

Hand Time Limit 32-Bit Integer Read/Write 0 – 86,399 Seconds

33 HOA Setting 16-Bit Integer Read/Write

35 Alarm Bitfield 16-Bit Bitfield Read

When accessed as a Coil,

49

5.3.7.2 Pulse Relay Output / Pulse Proportional Control Mode Address Map

Pulse Relay Output / Pulse Proportional Control Mode Address Map

Data

Encoding

0

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

Reset Output Timeout

Boolean

Read/Write

Write 1 to Reset Output Timeout

31

32

Reset Time Total

Boolean

Read/Write

Write 1 to Reset Time Total

0 = Hand, 1 = Off,

2 = Auto Mode

34

Status

16-Bit Status

Read

See 5.4 Status Register Codes

See 5.5.6 Relay Output Alarm Bitfield

Returns 1 if any alarm is active

Address Name

Time On 32-Bit Integer Read Seconds

Total Time 32-Bit Integer Read Seconds

Output 32-Bit Float Read Percent

Setpoint 32-Bit Float Read/Write Input Sensor Units

Proportional Band 32-Bit Float Read/Write Input Sensor Units

Permissions Value

Minimum Output 32-Bit Float Read/Write 0 – 100%

Maximum Output 32-Bit Float Read/Write 0 – 100%

Output Time Limit 32-Bit Integer Read/Write 0 – 86,399 Seconds

Hand Output 32-Bit Float Read/Write 0 – 100%

Hand Time Limit 32-Bit Integer Read/Write 0 – 86,399 Seconds

33 HOA Setting 16-Bit Integer Read/Write

35 Alarm Bitfield 16-Bit Bitfield Read

When accessed as a Coil,

50

5.3.7.3 Pulse Relay Output / Flow Proportional Control Mode Address Map

Pulse Relay Output / Flow Proportional Control Mode Address Map

Address

Name

Data Encoding

Permissions

Value

0

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

Hour

19

20

21

22

23

24

25

26

27

28

29

30

Reset Output Timeout

Boolean

Read/Write

Write 1 to Reset Output Timeout

31

32

Reset Time Total

Boolean

Read/Write

Write 1 to Reset Time Total

0 = Hand, 1 = Off,

2 = Auto Mode

34

Status

16-Bit Status

Read

See 5.4 Status Register Codes

See 5.5.6 Relay Output Alarm Bitfield

Returns 1 if any alarm is active

Time On 32-Bit Integer Read Seconds

Total Time 32-Bit Integer Read Seconds

Output 32-Bit Float Read Percent

Target PPM 32-Bit Float Read/Write 1 – 1,000,000 ppm

Specific Gravity

Of Product

32-Bit Float Read/Write

Pump Capacity 32-Bit Float Read/Write

Pump Setting 32-Bit Float Read/Write 0 – 100%

Output Time Limit 32-Bit Integer Read/Write 0 – 86,399 Seconds

Low Cycles Limit 32-Bit Float Read/Write 0.00 – 100.00

Hand Output 32-Bit Float Read/Write 0 – 100%

Hand Time Limit 32-Bit Integer Read/Write 0 – 86,399 Seconds

33 HOA Setting 16-Bit Integer Read/Write

0 – 9.999 mg/l

0 – 10,000 Volume Units

35 Alarm Bitfield 16-Bit Bitfield Read

When accessed as a Coil,

51

5.3.7.4 Pulse Relay Output / Pulse PID Control Mode Address Map

Pulse Relay Output / Pulse PID Control Mode Address Map

Data

Encoding

0

1

2

3

4

5

6

7

8

9

10

Proportional Gain ‡

11

12

Integral Time or

Integral Gain ‡

13

14

Derivative Time or

Derivative Gain ‡

15

16

17

18

19

20

21

22

23

24

25

Reset PID Integral

Boolean

Read/Write

Write 1 to Reset PID Integral

26

27

28

29

Reset Output

Timeout

31

32

Reset Time Total

Boolean

Read/Write

Write 1 to Reset Time Total

0 = Hand, 1 = Off,

2 = Auto Mode

34

Status

16-Bit Status

Read

See 5.4 Status Register Codes

See 5.5.6 Relay Output Alarm Bitfield

Returns 1 if any alarm is active

Address Name

Time On 32-Bit Integer Read Seconds

Total Time 32-Bit Integer Read Seconds

Output 32-Bit Float Read Percent

Setpoint 32-Bit Float Read/Write Input Sensor Units

Current Integral 32-Bit Float Read Seconds

Gain or

Permissions Value

32-Bit Float Read/Write 0.001 – 1000

32-Bit Float Read/Write 0.001 – 1000

32-Bit Float Read/Write 0 – 1000

Minimum Output 32-Bit Float Read/Write 0 – 100%

Maximum Output 32-Bit Float Read/Write 0 – 100%

Output Time Limit 32-Bit Integer Read/Write 0 – 86,399 seconds

Hand Output 32-Bit Float Read/Write 0 – 100%

Hand Time Limit 32-Bit Integer Read/Write 0 – 86,399 Seconds

30

Boolean Read/Write Write 1 to Reset Output Timeout

33 HOA Setting 16-Bit Integer Read/Write

35 Alarm Bitfield 16-Bit Bitfield Read

When accessed as a Coil,

‡ Setting is dependent on current selection for “PID Gain Form” (see Controller Instruction Manual)

52

5.3.7.5 Pulse Relay Output / Pulse Disturbance Control Mode Address Map

Pulse Relay Output / Pulse Disturbance Control Mode Address Map (W900 Controller Only)

Data

Encoding

0

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

Reset Output Timeout

Boolean

Read/Write

Write 1 to Reset Output Timeout

31

32

Reset Time Total

Boolean

Read/Write

Write 1 to Reset Time Total

0 = Hand, 1 = Off,

2 = Auto Mode

34

Status

16-Bit Status

Read

See 5.4 Status Register Codes

See 5.5.6 Relay Output Alarm Bitfield

Returns 1 if any alarm is active

Address Name

Time On 32-Bit Integer Read Seconds

Total Time 32-Bit Integer Read Seconds

Output 32-Bit Float Read Percent

Permissions Value

Minimum Output 32-Bit Float Read/Write 0 – 100%

Maximum Output 32-Bit Float Read/Write 0 – 100%

Output Time Limit 32-Bit Integer Read/Write 0 – 86,399 Seconds

Hand Output 32-Bit Float Read/Write 0 – 100%

Hand Time Limit 32-Bit Integer Read/Write 0 – 86,399 Seconds

33 HOA Setting 16-Bit Integer Read/Write

35 Alarm Bitfield 16-Bit Bitfield Read

When accessed as a Coil,

53

5.3.7.6 Pulse Relay Output / Lag Output Control Mode Address Map

Pulse Relay Output / Lag Output Control Mode Address Map

Address

Field

Data Encoding

Permissions

Value

0

1

2

3

4

5

6

7

8

9

10

11

12

Activation Delay

Time †‡

13

14

15

16

17

18

Cycle Time †‡

19

No. of Activated

Outputs †‡

21

22

23

24

25

26

27

28

29

Reset Output

Timeout

31

32

Reset Time Total

Boolean

Read/Write

Write 1 to Reset Time Total

0 = Hand, 1 = Off,

2 = Auto Mode

34

Status

16-Bit Status

Read

See 5.4 Status Register Codes

See 5.5.6 Relay Output Alarm Bitfield

Returns 1 if any alarm is active

Time On 32-Bit Integer Read Seconds

Total Time 32-Bit Integer Read Seconds

Percent Output 32-Bit Float Read Percent

Setpoint 1 ‡ 32-Bit Float Read/Write Input Sensor Units

Setpoint 2 ‡ 32-Bit Float Read/Write Input Sensor Units

Deadband ‡ 32-Bit Float Read/Write Input Sensor Units

32-Bit Integer Read/Write 0 – 86,399 Seconds

Wear Level Cycle

Time †‡

Current Activation

Time †‡

Current Wear Level

20

32-Bit Integer Read/Write 10 – 86,399 Seconds

32-Bit Integer Read Seconds

32-Bit Integer Read Seconds

16-Bit Integer Read Count

Output Time Limit 32-Bit Integer Read/Write 0 – 86,399 Seconds

30

Boolean Read/Write Write 1 to Reset Output Timeout

33 HOA Setting 16-Bit Integer Read/Write

35 Alarm Bitfield 16-Bit Bitfield Read

† Field is only defined for Lag Outputs configured as the “Last Lag” in the chain.
‡ Field is only meaningful for certain configurations of Lead-Lag chains.

When accessed as a Coil,

54

5.3.8 Analog Output Address Maps

Analog Output / Manual Control Address Map

Address

Name

Data Encoding

Permissions

Value

0

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

32

Reset Time Total

Boolean

Read/Write

Write 1 to Reset Time Total

0 = Hand, 1 = Off,

2 = Auto Mode

34

Status

16-Bit Status

Read

See 5.4 Status Register Codes

See 5.5.7 Analog Output Alarm Bitfield

Returns 1 if any alarm is active

5.3.8.1 Analog Output / Manual Control Mode Address Map

Time On 32-Bit Integer Read Seconds

Total Time 32-Bit Integer Read Seconds

Output 32-Bit Float Read Percent

Hand Output 32-Bit Float Read/Write 0 – 100%

Hand Time Limit 32-Bit Integer Read/Write 0 – 86,399 Seconds

33 HOA Setting 16-Bit Integer Read/Write

35 Alarm Bitfield 16-Bit Bitfield Read

When accessed as a Coil,

55

5.3.8.2 Analog Output / Retransmit Mode Address Map

Analog Output / Retransmit Mode Address Map

Data

Encoding

0

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

32

Reset Time Total

Boolean

Read/Write

Write 1 to Reset Time Total

0 = Hand, 1 = Off,

2 = Auto Mode

34

Status

16-Bit Status

Read

See 5.4 Status Register Codes

See 5.5.7 Analog Output Alarm Bitfield

Returns 1 if any alarm is active

Address Name

Time On 32-Bit Integer Read Seconds

Total Time 32-Bit Integer Read Seconds

Output 32-Bit Float Read Percent

Permissions Value

Hand Output 32-Bit Float Read/Write 0 – 100%

33 HOA Setting 16-Bit Integer Read/Write

35 Alarm Bitfield 16-Bit Bitfield Read

When accessed as a Coil,

56

5.3.8.3 Analog Output / Proportional Control Mode Address Map

Analog Output / Proportional Control Mode Address Map

Data

Encoding

0

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

Reset Output Timeout

Boolean

Read/Write

Write 1 to Reset Output Timeout

31

32

Reset Time Total

Boolean

Read/Write

Write 1 to Reset Time Total

0 = Hand, 1 = Off,

2 = Auto Mode

34

Status

16-Bit Status

Read

See 5.4 Status Register Codes

See 5.5.7 Analog Output Alarm Bitfield

Returns 1 if any alarm is active

Address Name

Time On 32-Bit Integer Read Seconds

Total Time 32-Bit Integer Read Seconds

Output 32-Bit Float Read Percent

Setpoint 32-Bit Float Read/Write Input Sensor Units

Proportional Band 32-Bit Float Read/Write Input Sensor Units

Minimum Output 32-Bit Float Read/Write 0 – 100%

Permissions Value

Maximum Output 32-Bit Float Read/Write 0 – 100%

Output Time Limit 32-Bit Integer Read/Write 0 – 86,399 Seconds

Hand Output 32-Bit Float Read/Write 0 – 100%

Hand Time Limit 32-Bit Integer Read/Write 0 – 86,399 Seconds

33 HOA Setting 16-Bit Integer Read/Write

35 Alarm Bitfield 16-Bit Bitfield Read

When accessed as a Coil,

57

5.3.8.4 Analog Output / Flow Proportional Control Mode Address Map

Analog Output / Flow Proportional Control Mode Address Map

Address

Name

Data Encoding

Permissions

Value

0

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

Specific Gravity

Of Product

17

18

0 – 10,000 Volume Units

Hour

19

20

21

22

23

24

25

26

27

28

29

30

Reset Output Timeout

Boolean

Read/Write

Write 1 to Reset Output Timeout

31

32

Reset Time Total

Boolean

Read/Write

Write 1 to Reset Time Total

0 = Hand, 1 = Off,

2 = Auto Mode

34

Status

16-Bit Status

Read

See 5.4 Status Register Codes

See 5.5.7 Analog Output Alarm Bitfield

Returns 1 if any alarm is active

Time On 32-Bit Integer Read Seconds

Total Time 32-Bit Integer Read Seconds

Output 32-Bit Float Read Percent

Target PPM 32-Bit Float Read/Write 1 – 1,000,000 ppm

32-Bit Float Read/Write 0 – 9.999 mg/l

Pump Capacity 32-Bit Float Read/Write

Pump Setting 32-Bit Float Read/Write 0 – 100%

Output Time Limit 32-Bit Integer Read/Write 0 – 86,399 Seconds

Low Cycles Limit 32-Bit Float Read/Write 0.00 – 100.00

Hand Output 32-Bit Float Read/Write 0 – 100%

Hand Time Limit 32-Bit Integer Read/Write 0 – 86,399 Seconds

33 HOA Setting 16-Bit Integer Read/Write

35 Alarm Bitfield 16-Bit Bitfield Read

When accessed as a Coil,

58

5.3.8.5 Analog Output / PID Control Mode Address Map

Analog Output / PID Control Mode Address Map

Data

Encoding

0

1

2

32-Bit

Integer

3

4

5

6

7

8

9

10

Proportional Gain ‡

11

12

Integral Time or

Integral Gain ‡

13

14

Derivative Time or

Derivative Gain ‡

15

16

17

18

19

20

21

22

32-Bit

Integer

23

24

25

Reset PID Integral

Boolean

Read/Write

Write 1 to Reset PID Integral

26

27

28

29

30

Reset Output Timeout

Boolean

Read/Write

Write 1 to Reset Output Timeout

31

32

Reset Time Total

Boolean

Read/Write

Write 1 to Reset Time Total

16-Bit

Integer

0 = Hand, 1 = Off,

2 = Auto Mode

34

Status

16-Bit Status

Read

See 5.4 Status Register Codes

See 5.5.7 Analog Output Alarm Bitfield

Returns 1 if any alarm is active

Address Name

Time On

Total Time

Output 32-Bit Float Read Percent

Setpoint 32-Bit Float Read/Write Input Sensor Units

Current Integral 32-Bit Float Read Seconds

Gain or

Permissions Value

32-Bit

Integer

Read Seconds

Read Seconds

32-Bit Float Read/Write 0.001 – 1000

32-Bit Float Read/Write 0.001 – 1000

32-Bit Float Read/Write 0 – 1000

Minimum Output 32-Bit Float Read/Write 0 – 100%

Maximum Output 32-Bit Float Read/Write 0 – 100%

Output Time Limit

Hand Output 32-Bit Float Read/Write 0 – 100%

Hand Time Limit

33 HOA Setting

35 Alarm Bitfield

32-Bit

Integer

16-Bit

Bitfield

Read/Write 0 – 86,399 seconds

Read/Write 0 – 86,399 Seconds

Read/Write

Read

When accessed as a Coil,

‡ Setting is dependent on current selection for “PID Gain Form” (see Controller Instruction Manual)

59

5.3.8.6 Analog Output / Disturbance Control Mode Address Map

Analog Output / Disturbance Control Mode Address Map (W900 Controller Only)

Data

Encoding

0

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

Reset Output Timeout

Boolean

Read/Write

Write 1 to Reset Output Timeout

31

32

Reset Time Total

Boolean

Read/Write

Write 1 to Reset Time Total

0 = Hand, 1 = Off,

2 = Auto Mode

34

Status

16-Bit Status

Read

See 5.4 Status Register Codes

See 5.5.7 Analog Output Alarm Bitfield

Returns 1 if any alarm is active

Address Name

Time On 32-Bit Integer Read Seconds

Total Time 32-Bit Integer Read Seconds

Output 32-Bit Float Read Percent

Minimum Output 32-Bit Float Read/Write 0 – 100%

Permissions Value

Maximum Output 32-Bit Float Read/Write 0 – 100%

Output Time Limit 32-Bit Integer Read/Write 0 – 86,399 Seconds

Hand Output 32-Bit Float Read/Write 0 – 100%

Hand Time Limit 32-Bit Integer Read/Write 0 – 86,399 Seconds

33 HOA Setting 16-Bit Integer Read/Write

35 Alarm Bitfield 16-Bit Bitfield Read

When accessed as a Coil,

60

5.3.8.7 Analog Output / Lag Output Control Mode Address Map

Analog Output / Lag Output Control Mode Address Map

Address

Field

Data Encoding

Permissions

Value

0

1

2

3

4

5

6

7

8

9

10

11

12

Activation

Delay Time †‡

13

14

15

16

17

18

Cycle Time †‡

19

No. of Activated

Outputs †‡

21

22

23

24

25

26

27

28

29

Reset Output

Timeout

31

32

Reset Time Total

Boolean

Read/Write

Write 1 to Reset Time Total

0 = Hand, 1 = Off,

2 = Auto Mode

34

Status

16-Bit Status

Read

See 5.4 Status Register Codes

See 5.5.7 Analog Output Alarm Bitfield

Returns 1 if any alarm is active

Time On 32-Bit Integer Read Seconds

Total Time 32-Bit Integer Read Seconds

Output 32-Bit Float Read Percent

Setpoint 1 ‡ 32-Bit Float Read/Write Input Sensor Units

Setpoint 2 ‡ 32-Bit Float Read/Write Input Sensor Units

Deadband ‡ 32-Bit Float Read/Write Input Sensor Units

32-Bit Integer Read/Write 0 – 86,399 Seconds

Wear Level

Cycle Time †‡

Current

Activation Time †‡

Current Wear Level

20

32-Bit Integer Read/Write 10 – 86,399 Seconds

32-Bit Integer Read Seconds

32-Bit Integer Read Seconds

16-Bit Integer Read Count

Output Time Limit 32-Bit Integer Read/Write 0 – 86,399 Seconds

30

Boolean Read/Write Write 1 to Reset Output Timeout

33 HOA Setting 16-Bit Integer Read/Write

35 Alarm Bitfield 16-Bit Bitfield Read

† Field is only defined for Lag Outputs configured as the “Last Lag” in the chain.
‡ Field is only meaningful for certain configurations of Lead-Lag chains.

When accessed as a Coil,

61

62

Alternate Sensor Input Address Map

Object

Primary Value

Status

Alarm Bitfield

Low Alarm

High Alarm

LoLo Alarm

HiHi Alarm

Cal Required

Data Encoding

32-Bit Float

16-Bit Status

16-Bit Bitfield

Boolean

Boolean

Boolean

Boolean

Boolean

Permissions

Read

Read

Read

Read

Read

Read

Read

Read

See 5.4 Status

Register Codes

See 5.5.3 Sensor

Input Alarm Bitfield

1 = Alarm

Active

1 = Alarm

Active

1 = Alarm

Active

1 = Alarm

Active

1 = Alarm

Active

Sensor Number

Address

Address

Address

Address

Address

Address

Address

Address

Sensor 1

x9217

x9281

x9313

x9345

x9377

x9409

x9441

x9473

Sensor 2

x9219

x9282

x9314

x9346

x9378

x9410

x9442

x9474

Sensor 3

x9221

x9283

x9315

x9347

x9379

x9411

x9443

x9475

Sensor 4

x9223

x9284

x9316

x9348

x9380

x9412

x9444

x9476

Sensor 5

x9225

x9285

x9317

x9349

x9381

x9413

x9445

x9477

Sensor 6

x9227

x9286

x9318

x9350

x9382

x9414

x9446

x9478

Sensor 7

x9229

x9287

x9319

x9351

x9383

x9415

x9447

x9479

Sensor 8

x9231

x9288

x9320

x9352

x9384

x9416

x9448

x9480

Sensor 9

x9233

x9289

x9321

x9353

x9385

x9417

x9449

x9481

Sensor 10

x9235

x9290

x9322

x9354

x9386

x9418

x9450

x9482

Sensor 11

x9237

x9291

x9323

x9355

x9387

x9419

x9451

x9483

Sensor 12

x9239

x9292

x9324

x9356

x9388

x9420

x9452

x9484

Sensor 13

x9241

x9293

x9325

x9357

x9389

x9421

x9453

x9485

Sensor 14

x9243

x9294

x9326

x9358

x9390

x9422

x9454

x9486

Sensor 15

x9245

x9295

x9327

x9359

x9391

x9423

x9455

x9487

Sensor 16

x9247

x9296

x9328

x9360

x9392

x9424

x9456

x9488

Sensor 17

x9249

x9297

x9329

x9361

x9393

x9425

x9457

x9489

Sensor 18

x9251

x9298

x9330

x9362

x9394

x9426

x9458

x9490

Sensor 19

x9253

x9299

x9331

x9363

x9395

x9427

x9459

x9491

Sensor 20

x9255

x9300

x9332

x9364

x9396

x9428

x9460

x9492

Sensor 21

x9257

x9301

x9333

x9365

x9397

x9429

x9461

x9493

Sensor 22

x9259

x9302

x9334

x9366

x9398

x9430

x9462

x9494

Sensor 23

x9261

x9303

x9335

x9367

x9399

x9431

x9463

x9495

Sensor 24

x9263

x9304

x9336

x9368

x9400

x9432

x9464

x9496

5.3.9 Alternate Address Maps

5.3.9.1 Alternate Sensor Input Address Map

Value Sensor Units

63

Data Encoding

Boolean

Boolean

32-Bit Integer

32-Bit Float

32-Bit Float

16-Bit Bitfield

Permissions

Read

Read

Read

Read

Read

Read

Contacting FM

Feed Monitor

0 = Open

1 = Closed

0 = Inactive

1 = Active Interlock

Flow Units
Rate Units

See 5.5.4 Digital

Input Alarm Bitfield

Digital Input 1

x9681

x9697

x9649

x9617

x9649

x9713

Digital Input 2

x9682

x9698

x9651

x9619

x9651

x9714

Digital Input 3

x9683

x9699

x9653

x9621

x9653

x9715

Digital Input 4

x9684

x9700

x9655

x9623

x9655

x9716

Digital Input 5

x9685

x9701

x9657

x9625

x9657

x9717

Digital Input 6

x9686

x9702

x9659

x9627

x9659

x9718

Digital Input 7

x9687

x9703

x9661

x9629

x9661

x9719

Digital Input 8

x9688

x9704

x9663

x9631

x9663

x9720

Digital Input 9

x9689

x9705

x9665

x9633

x9665

x9721

Digital Input 10

x9690

x9706

x9667

x9635

x9667

x9722

Digital Input 11

x9691

x9707

x9669

x9637

x9669

x9723

Digital Input 12

x9692

x9708

x9671

x9639

x9671

x9724

5.3.9.2 Alternate Digital Input Address Map

Object DI State Interlock State Total Time Flowrate Flow Total Alarm Bitfield

Control Modes DI State DI State DI State

Value

Digital Input Number Address Address Address Address Address Address

Seconds

Paddlewheel FM

Feed Monitor

Paddlewheel FM

Flow Units

All

64

Alternate Virtual Input Address Map

Data Encoding

32-Bit Float

16-Bit Status

16-Bit Bitfield

Permissions

Read

Read

Read

Value

Virtual Input Units

See 5.4 Status Register Codes

See 5.5.5 Virtual Input Alarm Bitfield

Virtual Input 1

x9505

x9537

x9553

Virtual Input 2

x9507

x9538

x9554

Virtual Input 3

x9509

x9539

x9555

Virtual Input 4

x9511

x9540

x9556

Virtual Input 5

x9513

x9541

x9557

Virtual Input 6

x9515

x9542

x9558

Virtual Input 7

x9517

x9543

x9559

Virtual Input 8

x9519

x9544

x9560

5.3.9.3 Alternate Virtual Input Address Map

Object Primary Value Status Alarm Bitfield

Virtual Input Number Address Address Address

65

Data Encoding

Boolean

32-Bit Float

32-Bit Integer

16-Bit Status

16-Bit Bitfield

Permissions

Read

Read

Read

Read

Read

Control Modes

All except Pulse Outputs

Only Pulse Outputs

All

All

All

0 = Off

1 = On

See 5.4 Status Register

Codes

See 5.5.6 Relay Alarm

Bitfield

Relay 1

x9601

x9793

x9729

x9761

x9777

Relay 2

x9602

x9795

x9731

x9762

x9778

Relay 3

x9603

x9797

x9733

x9763

x9779

Relay 4

x9604

x9799

x9735

x9764

x9780

Relay 5

x9605

x9801

x9737

x9765

x9781

Relay 6

x9606

x9803

x9739

x9766

x9782

Relay 7

x9607

x9805

x9741

x9767

x9783

Relay 8

x9608

x9807

x9743

x9768

x9784

5.3.9.4 Alternate Relay Output Address Map

Object Relay State Pulse Output Time On Status Alarm Bitfield

Value

Relay Number Address Address Address Address Address

% Seconds

66

Data Encoding

32-Bit Float

32-Bit Integer

16-Bit Status

16-Bit Bitfield

Permissions

Read

Read

Read

Read

See 5.5.7 Analog Output

Alarm Bitfield

Analog Output 1

x9825

x9857

x9921

x9953

Analog Output 2

x9827

x9859

x9922

x9954

Analog Output 3

x9829

x9861

x9923

x9955

Analog Output 4

x9831

x9863

x9924

x9956

Analog Output 5

x9833

x9865

x9925

x9957

Analog Output 6

x9835

x9867

x9926

x9958

Analog Output 7

x9837

x9869

x9927

x9959

Analog Output 8

x9839

x9871

x9928

x9960

Analog Output 9

x9841

x9873

x9929

x9961

Analog Output 10

x9843

x9875

x9930

x9962

Analog Output 11

x9845

x9877

x9931

x9963

Analog Output 12

x9847

x9879

x9932

x9964

Analog Output 13

x9849

x9881

x9933

x9965

Analog Output 14

x9851

x9883

x9934

x9966

Analog Output 15

x9853

x9885

x9935

x9967

Analog Output 16

x9855

x9887

x9936

x9968

5.3.9.5 Alternate Analog Output Address Map

Object Analog Output Time On Status Alarm Bitfield

Value % Seconds See 5.4 Status Register Codes

Analog Output Number Address Address Address Address

67

Data Encoding

Boolean

32-Bit Float

32-Bit Integer

16-Bit Status

16-Bit Bitfield

Permissions

Read

Read

Read

Read

Read

Control Modes

All except Percent Outputs

Only Percent Outputs

All

All

All

0 = Off

1 = On

See 5.4 Status Register

Codes

See 5.5.6 Relay Alarm

Bitfield

Control Output 1

x9889

x9569

x9969

x9905

x9937

Control Output 2

x9890

x9571

x9971

x9906

x9938

Control Output 3

x9891

x9573

x9973

x9907

x9939

Control Output 4

x9892

x9575

x9975

x9908

x9940

Control Output 5

x9893

x9577

x9977

x9909

x9941

Control Output 6

x9894

x9579

x9979

x9910

x9942

Control Output 7

x9895

x9581

x9981

x9911

x9943

Control Output 8

x9896

x9583

x9983

x9912

x9944

5.3.9.6 Alternate Control Output Address Map

Object Output State Percent Output Time On Status Alarm Bitfield

Value

Control Output Number Address Address Address Address Address

% Seconds

Status

0

Error

Generic Error. 1 None

No status to report.

2

Sensor Auto Cal

Sensor Circuit Auto-Calibration in progress.

3

Sensor User Cal

Sensor User-Calibration in progress.

4

DI State: Open

DI State is open.

5

DI State: Closed

DI State is closed.

6

DI Interlock: Active

DI Interlock State is active

7

DI Interlock: Inactive

DI Interlock State is inactive

8

Relay: On

Relay is energized.

9

Relay: Off

Relay is not energized.

10

Unused

Unused.

11

Output Interlocked

Output is interlocked by a DI or another output.

12

Output Forced On

Output is forced on by a DI or by another output.

13

Output Timeout

Output timeout limit exceeded.

14

Output Input Error

No valid measurement could be retrieved from the input.

15

Output Error

Error occurred attempting to set the output.

16

Output Hold

Output control on hold due to calibration.

17

Output HOA: Auto On

Output control in Auto Mode, output on.

18

Output HOA: Auto Off

Output control in Auto Mode, output off.

19

Output HOA: Hand

Output control in Hand Mode.

20

Output HOA: Off

Output control in Off Mode.

21

Output Deadband

Output is on and within the deadband area.

22

Relay Timeout

Timeout alarm: output off.

23

Relay OK

Relay reports it is on.

24

Daily Max Timeout

Daily maximum feed time limit exceeded.

25

Biocide: Prebleed

Pre-Bleed active before timed biocide feed.

26

Biocide: Hold

Bio feed bleed lockout in progress.

27

Biocide: Add

Bio feed in progress.

28

Time Proportional: Off

Off period within a time proportional cycle.

29

Bleed & Feed: Bleeding

Bleed valve activated, feed time accumulating.

30

Bleed & Feed: Timeout

Feed time exceeding user-entered feed time limit.

31

Intermittent Sampling: Wait

Wait cycle between readings.

32

Intermittent Sampling: Sample

Sample cycle before new reading.

33

Intermittent Sampling: Hold

Hold cycle before new reading.

34

Intermittent Sampling: Bleed

Bleed cycle after reading.

35

Probe Wash: On

Probe Wash in progress.

36

Probe Wash: Hold

Hold Cycle after probe wash.

37-39

Unused

Unused.

40

Off-Line

Network connection status disabled.

41

N/A

Requested information is undefined in the current context.

42

Success

VTouch LiveConnect available

43

Failure

VTouch LiveConnect unavailable

44

Sensor Input Failure

Sensor input failure or sensor board alarm.

5.4 Status Register Codes

Code

Name Description

68

Status

45

Sensor Fault Error

Sensor value outside of fault limits.

46

Sensor Range Alarm

Sensor value outside of range limits.

47

Relay Cycle Delay

Relay state change delayed by minimum cycle time setting.

48

Sensor Normal

Sensor is running in normal operation.

49

Sensor Initializing

Sensor input is initializing.

50

Sensor Default Temp

Sensor using default temperature instead of sensor value.

51

Alarm Relay: Open

Alarm Output relay closes on an alarm.

52

Alarm Relay: Closed

Alarm Output relay opens on an alarm.

53

Probe Wash: Relay Off

Probe Wash in progress for input sensor.

54

Disabled

Feature is disabled.

55

Duty Cycle: Off

Relay is off due to duty cycle settings.

56

VI Calculation Error

Calculation error while evaluating a virtual input.

57

Output On Delay

Relay is off waiting for on delay to expire.

58

Output Off Delay

Relay is on waiting for off delay to expire.

59

DI Flow Verify: Off

DI Flow Monitor reports an error, output is forced off.

60

DI Flow Verify: Auto

DI Flow Monitor reports an error, output is in auto mode.

61

Output PID Saturated: High

PID integral hold due to output saturated at 100%.

62

Output PID Saturated: Low

PID integral hold due to output saturated at 0%.

63

Output Lead Lag

Lag is controlling (or being controlled) in automatic mode.

64

DI Flow Verify: Reprime

DI Flow Monitor reports an error, output is forced on.

65

Spike Onset

Spike onset climb active before reaching spike setpoint.

66

Spike Event: On

Spike onset value achieved, event in progress, output on.

67

Spike Event: Off

Spike onset value achieved, event in progress, output off.

68

Stabilizing

Sensor input is in a stabilization delay.

69

Circuit Test

Corrosion Sensor circuit self-test in progress.

70

Cable Test

Corrosion Sensor cable test in progress.

71

Circuit Cal

Corrosion Sensor circuit calibration in progress.

72

Polarization

Corrosion Sensor polarization measurement in progress.

73

Imbalance

Corrosion Sensor imbalance measurement in progress.

74

Resistance

Corrosion Sensor solution resistance measurement.

75

Enabled

Ethernet or WiFi communications enabled.

76

Invalid Config

WiFi infrastructure mode configuration settings invalid.

77

Connecting

WiFi infrastructure mode connection in progress.

78

Network Not Found

WiFi infrastructure network not available.

79

Invalid Key

WiFi security key for infrastructure network invalid.

80

Unable To Connect

WiFi unable to connect to infrastructure network.

81

Connected

WiFi infrastructure mode network connection successful.

82

Ad-Hoc Mode

WiFi ad-hoc access point is available.

83

Unused

Unused.

84

Invalid Config

WiFi ad-hoc mode configuration settings invalid.

85

WPA Personal

WiFi security mode WPA Personal (PSK).

86

WPA Enterprise

WiFi security mode WPA Enterprise (Radius).

87

WPA2 Personal

WiFi security mode WPA2 Personal (PSK).

88

WPA2 Enterprise

WiFi security mode WPA2 Enterprise (Radius).

89

WEP

WiFi security mode WEP.

Code

Name Description

69

System Alarm Bitfield

Bit Name

Bit No.

Description

Temperature Alarm

1

Controller internal temperatures fall below -10°C or exceed 75°C.

Battery Low

2

The button-cell battery voltage falls below 2.4VDC.

Invalid Setting

3

A hardware change creates invalid settings.

Software Version

4

The firmware of an add-on card needs to be updated.

Board Failure

5

An internal controller component has failed.

Internal Voltage

6

One or more internal (3.3V, 5V, 12V) voltage signal is out of range.

Unused

7 Unused

8

Network Alarm Bitfield

Bit Name

Bit No.

Description

Web Server Failure

1

Internal error when the web server on the Ethernet card fails.

VTouch Data Comm

2

Controller cannot send data to VTouch.

VTouch LiveConnect

3

Controller cannot create a VPN connection to the VTouch server.

WiFi Error

4

Unable to connect to (or create) WiFi network.

Unused

5 Unused

6 Unused

7 Unused

8

5.5 Alarm Bitfields

Alarm bitfields are comprised of an 8-bit field encapsulated in a 16-bit word. Bit 1 is the least significant
bit, bit 8 is the most significant bit. See 4.4.2.2 16-Bit Word (Bitfield)
multiple causes, consult the Controller Instruction Manual for a comprehensive list of possible alarm
causes.

5.5.1 System Alarm Bitfield

5.5.2 Network Alarm Bitfield

for details. Some alarms have

70

Sensor Input Alarm Bitfield

Bit Name

Bit No.

Description

SI Types

Low

1

The sensor reading drops below the Low Alarm setpoint.

All sensor types

High

2

The sensor reading rises above the High Alarm setpoint.

All sensor types

Low Low

3

The sensor reading drops below the Low Low Alarm setpoint.

All sensor types

High High

4

The sensor reading rises above the High High Alarm setpoint.

All sensor types

Replace

Electrode †

Corrosion

sensors only

AI Flowmeter

only

Unused †

6

The sensor reading is invalid (out of range, sensor fault,

will stop the control for any output using the sensor.

Calibration

Required

Digital Input Alarm Bitfield

Bit Name

Bit No.

Description

DI Types

DI State

1

The input is in the state selected to generate an alarm.

DI State only

All Digital

Meters

All Digital

Meters

Input Failure

4

This digital input circuit is no longer functioning.

All DI Types

Flow Monitor

only

Paddlewheel

only

Paddlewheel

only

Unused

8

5.5.3 Sensor Input Alarm Bitfield

5 Electrode in service longer than alarm time setpoint.

Total † 5 The flowmeter total exceeds the limit.

Input Failure † 7

8 The sensor requires calibration. All sensor types

† Compatibility Note: In controller software versions 3.09 and earlier, Bit 5 was used for “Out of Range”
errors and Bit 6 was used for “Sensor Fault” alarms. In software versions 3.11 and later, these alarms
are combined with other types of sensor “Input Failures” reported using Bit 7.

wiring incorrect, sample error, or I/O card failure). This alarm

All sensor types

5.5.4 Digital Input Alarm Bitfield

Total 2 The meter total exceeds the limit.

Total Range 3 The range of the totalizer is exceeded.

Flow Verify 5 Feed Monitor unable to verify chemical feed.

Low 6 Flowrate below the Low Alarm setpoint.

High 7 Flowrate above the High Alarm setpoint.

71

Virtual Input Alarm Bitfield

Bit Name

Bit No.

Description

VI Types

Calculation &

Raw Value only

Calculation &

Raw Value only

Calculation &

Raw Value only

Calculation &

Raw Value only

The value is outside of the acceptable range. This alarm will
stop the control for any output using the sensor.

The difference between the two inputs exceeds the
Deviation Alarm setpoint.

Unused

6

Unused

7

A value required for a virtual calculation is not

using the sensor.

Relay & Control Output Alarm Bitfield

Bit Name

Bit No.

Description

Control Modes

The relay has been activated for longer than the

alarm is active.

All modes with

Limit setting

All modes with

settings

Plating Control

mode only

Control

Failure

All Control

Modes

Unused

4

Unused

5

Unused

6

Unused

7

Unused

8

5.5.5 Virtual Input Alarm Bitfield

Low 1 The value drops below the Low Alarm setpoint.

High 2 The value rises above the High Alarm setpoint.

Low Low 3 The value drops below the Low Low Alarm setpoint.

High High 4 The value rises above the High High Alarm setpoint.

Out of Range 5

Deviation 5

Input Failure 8

available. This alarm will stop the control for any output

5.5.6 Relay & Control Output Alarm Bitfield

Output

Timeout

Relay Event

Skipped

Turnover Limit 2 Number of Turns exceeds Turnover Limit setpoint.

1

2 A timer event was not able to be initiated.

configured time limit. Control is stopped while the

Calculation only

Redundant only

All VI Types

Output Time

Event Timer

3 The relay control circuit is no longer functioning.

72

Analog Output Alarm Bitfield

Bit Name

Bit No.

Description

Control Modes

The output has been activated for longer than the

alarm is active.

All modes with

Limit setting

Control

Failure

All Control

Modes

Unused

3

Unused

4

Unused

5

Unused

6

Unused

7

Unused

8

5.5.7 Analog Output Alarm Bitfield

Output

Timeout

1

2 The analog control circuit is no longer functioning.

configured time limit. Control is stopped while the

Output Time

73