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Thank you for your interest in 3D TRASAR Technology for Mem-branes. There are a large number of sensor inputs required to fully capture the current state and perfor-mance of your RO system. Many of these sensors are located on the 3D TRASAR equipment, and they are captured directly into the 3D TRASAR Controller. However, there are a number of sensor sig-nals that currently exist on an RO system that we will need to collect, which are primarily pressure and flow signals.

There are essentially two methods used to acquire the signals. We can either collect them directly from the PLC or we can physically obtain each signal, (either using direct 4-20 mA signals or an analog signal splitter). This document is designed to provide a basic understanding of the information we will need to com-municate with your PLC, as well as some guidance around this option.

What does communicating to the PLC really mean? • We would establish a read-only

connection between the Nalco 3D TRASAR Membrane controller and your PLC, in order to obtain the RO system’s existing sensor inputs. This helps us avoid unnecessary duplication of sensors and minimizes

PLC Communications3D TRASAR® Technology for Membranes

ADV-1380

unnecessary installation costs. In some instances, it also pro-vides us the ability to diagnose failing probes or calibration issues.

• We have standardized on Ethernet communications due to its broadly accepted use and relatively simple setup and installation process.

What we will NOT do when communicating with the PLC • We will NOT write anything back

to your PLC. The connection is strictly one-way, read-only.

• We will NOT compromise your network security, as the Protocol Converter provides a separa-tion between your network and external networks.

• We will NOT compromise your data, as all data transfer is done through the Nalco Global Gateway. (firewall protected).

There is some standard informa-tion that we require in order to establish this flow of data. The following identifies some of the information and questions that we encourage you to discuss with your controls engineer or other related personnel.

M E M B R A N E

DETECT

DETERMINE

DELIVER

PLC Brand Name and Series

IP Address

Subnet Mask

Available IP Address for Red Lion use

Tags and Addresses

Is there an addition communications module?

Brand and Model Number

PLC CPU Rack Number

PLC CPU Slot Number

The tags and addresses can appear differently from one PLC manufacturer to another. Below are some typical examples of how these might look. Please note that the Allen Bradley ControlLogix and CompactLogix do not use Tag Addresses.

Below are some examples of Tag addresses:

Allen Bradley SLC 5/05 = F8:2, F8:5, etc…

Siemens S7 = DB0001:0002, DB0001:0023, etc…

Mitsubishi FX or Q = D00012, D00014, etc…

While the PLC Tag names or symbols may be different from one system to the next, the Tag addresses or memory mappings is our primary objective.

Here is another example of how the Tag file would look.

Depending on your specific brand of PLC, there may be some additional questions or slight variations in the process. The following is a brief list of PLCs that require more information. If your PLC is not listed, it may be that there are no additional questions (such as in the case of AB SLC5/05, AB Mi-croLogix, or Siemens S7) or it would need to be reviewed by one of Nalco’s PLC experts.

Allen Bradley Controllogix or Compactlogix Series:

• We will need the .L5K or .ACD file.

• You can locate the .ACD file by searching “*.acd”. The .L5K file can be created by opening the .ACD file and performing a “Save As” (select the .L5K extension).

Omron CJ or CS Series:• Destination Network: Source Network:

• Destination Node: Source Node:

• Destination Unit: Source Unit:

Mitsubishi FX or Q Series:• TCP port number:

• PC number:

Panasonic FP:• TCP port number:

• Unit number:

Here are some common examples of what some of this information might look like.

IP Address: A typical IP address will look like the following 10.126.135.244

Subnet Mask: The subnet mask is very common and typically looks like 255.255.255.0

PLC CPU Slot Number: This would be single whole number, something between 0 and 9.

TCP port number: This would be two or three whole numbers, such as 502.

PLC CPU Rack Number: This would be single whole number, something between 1 and 9.

The following would be single whole number, something between 0 and 9.

Destination Network: 1

Destination Node: 3

Destination Unit: 1

PC number: 2

Source Network: 1

Source Node: 3

Source Unit: 5

Unit number: 1

3D TRASAR, NALCO and the logo are Trademarks of Nalco CompanyEcolab is a trademark of Ecolab USA, Inc.All other trademarks are the property of their respective owners©2012 Nalco Company All Rights Reserved 2-12

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