About Stuart Combellack

Senior Software Engineer, Technolog Limited.

04-Dec-2017 WITS Wastewater Loggers at SWW

South West Water has selected battery-powered WITS data loggers from Servelec Technologies for a wastewater event duration monitoring (EDM) project which starts this month [November 2017].

The Seprol S2000nano devices will be installed to monitor sewer levels underneath the roads of Cornwall and Devon.

As the loggers are WITS certified they integrate directly with South West Water’s WITS enabled SCOPE SCADA and telemetry system, also provided by Servelec. The enterprise SCOPE SCADA and telemetry system deployed […]

21-Nov-2017 WITS PSA Forums Now LIVE!

The WITS PSA Committee are pleased to announce that the WITS PSA Forums are available once again.

The WITS PSA member forums can now be accessed again from the WITS website using the Members’ Forum link (you must be a WITS member and logged-in to the WITS website). It should be possible to log in using the username and password you have always used for the forum. If your organisation is a WITS PSA member and […]

18-Oct-2017 WITS Forums – Service announcement

WITS Forums – Service announcement and migration to new host

Following the first user meeting in June 2017, users requested that they have a method to continue discussions on line between meetings. These discussions should be private to the users. The current forum used by the WITS PSA and its members has been voluntarily managed by one of the PSA vendors representatives (Gavin Rawson). To avoid any conflicts of interest and with the help of […]

17-Oct-2017 WITS Plugfest Date Announced

2018 Plugfest Date Announcement

Following the last successful WITS Plugfest on May 17th 2017 (see the article on the WITS website to remind you), we would like to invite you to the next WITS Plugfest on Wednesday 17th January 2018.

As requested at the last Plugfest, we will be inviting more users this time around.  To facilitate this, the plugfest will be held in the same location and on the day before the WITS User Meeting, thus […]

13-Sep-2017 Making the WITS PSAC More Transparent

Making the workings of the PSAC more transparent

In late 2015, the membership of the WITS Protocol Standards Association (PSA) suggested that having more visibility of what the Protocol Standards Association Committee (PSAC) is doing would be good. In reply to this request, the Strategy Group of the PSAC did the following:

  • Determine what the strategy objectives of the PSA should be. What objectives should the PSA have to ensure continued adoption of the protocol […]
By |September 13th, 2017|News, PSA News|0 Comments|

Servelec Systems S2000nano Device Profile

WITS Version 1.1 – Self certified on 7th August 2017


Note that this Device Profile shows the device’s functionality at the time it was listed as a self certified device. The vendor may have changed the device’s functionality since that time and they may have later versions of the […]

29-Aug-2017 NI Water: WITS and The Telemetry Outstation Project

Northern Ireland Water

Telemetry Outstation Project

NI Water Telemetry provides monitoring (and in some cases control) of approximately 4,500 clean and wastewater assets. Telemetry not only provides alarm annunciation, local monitoring and control but also provides regulatory and operational data. There is a reliance on accurate and timely data being provided for business, operational purposes and for the security of customer water and wastewater facilities.

At each asset, signals are marshalled into a […]

21-Aug-2017 DNP User Group Issues DNP3 Security Notice

The DNP User Group have issued a security notice (SN2017-001)

The WITS-PSAC would like to draw members attention to a security notice that has been issued by the DNP User Group.

Last year there was a cyber-attack against the Ukraine Power Grid using malware named as CrashOverride (also named as Industroyer).  The attackers spent some time analysing the structure of the Ukrainian SCADA system and then inserted the malware which took over, amongst other items, the […]

21-Jul-2017 Grundfos CIU 531 Has Achieved WITS Self-Certified Status

We are pleased to announce that the Grundfos CIU 531 has achieved Self-Certified WITS DNP3 status.

The device has been tested by Grundfos to the WITS Test specification up to WITS Version 1.1.

The CIU 531 is a basic WITS-DNP3 supported IO device. It supports 3 Analog Input, 1 Analog Output, 4 Binary Input, 1 Binary Output and 1 Binary Counter.

For more details, please see the WITS Device Catalogue.

21-Jun-2017 WITS-IoT Presented at SCADA Australia 2017

SCADA Australia 2017 Conference Report

Jim Baker, the SCADA Acquisitions Manager for Water Corporation in Western Australia and a member of the WITS-PSA committee, was invited to give a presentation at the SCADA Australia 2017 conference in Melbourne (30th-31st May). He sent us this report:

“The SCADA Australia conference is held every year and is attended by many Australian vendors and utility representatives. What was interesting is that the vast majority of the attendees were from […]