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Programming the PLC - Twelve Drummers

Submitted by GordonG on Thu, 17/03/2011 - 18:07.

The editing results are shown graphically on the PC’s screen in a form that electricians call “ladder logic” networks.

Picture 11 shows an example screen of one such network, the one controlling the four outputs (17-20) for the “Santa Drummer, Alligator & Hearts” at the top centre of the 12 Drummers Drumming display.

Steadily the program was built up network by network until all of the 51 different lighting elements in the display were controlled in line with the program sequence chart, and when completed consisted of 20 networks in total.

Again this stage took about a week to complete, to load, test, debug, re-test and finalise things like labelling and updating record documentation of changes made along the way.

 

Picture 11 – Example program network
Picture 11 – Example program network
‹ Program Chart - Twelve DrummersupInstalling Onsite - Twelve Drummers ›

Contributions by GordonG

TitleUpdatedType
Installing Onsite - Twelve Drummers 15 years 3 weeks agoBook page
Final Fitting - Twelve Drummers 15 years 3 weeks agoBook page
Wiring the Components - Twelve Drummers 15 years 4 weeks agoBook page
Backplate Assembly - Twelve Drummers 15 years 4 weeks agoBook page
Sourcing the Equipment - Twelve Drummers 15 years 4 weeks agoBook page
Unit Design - Twelve Drummers 15 years 4 weeks agoBook page
Design & Equipment - Twelve Drummers 15 years 4 weeks agoBook page
First Impressions - Twelve Drummers 15 years 4 weeks agoBook page
The Call to Arms! - Twelve Drummers 15 years 4 weeks agoBook page
Program Chart - Twelve Drummers 15 years 4 weeks agoBook page
Bringing the Display to Life - Twelve Drummers 15 years 4 weeks agoBook page
Programming the PLC - Twelve Drummers 15 years 4 weeks agoBook page

Book page

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2026-April-POSTPONED-planned improvements i.e. install footpath, paint double yellow lines junction Grist Lane Hatchs Hill 3 days 12 hours agoBook page
2026 - Resurfacing Steamers Hill; Hatchs Hill; Angarrack Lane | 1 Apr 07:30 - 17 Apr 23:59 2 weeks 1 day agoBook page
250330; Closure order:30 Mar-17 Apr 2026; 07:30-17:00; Clearway Parking Zone; Hatchs Hill, Steamers Hill and Angarrack Lane 3 weeks 3 days agoBook page
Traffic/Roads - Marsh/Grist Lane - Traffic counts 2019 onwards 15 weeks 6 hours agoBook page
Approved with conditions | PA25/07094 | First floor extension over existing garage to create Art studio with guest bedroom... 19 weeks 3 days agoBook page
PA25/07094 | First floor extension over existing garage to create Art studio with guest bedroom, covered parking area below | As 20 weeks 2 days agoBook page
251027 | 20mph Monitoring—Hayle & St Ives Speed Data; Phase 3a-May-Jun 24 v Sep-Oct 24; Steamers Hill; Gwinear;Carbis;Nancledra 24 weeks 1 day agoBook page
PA25/07184 | Retention of 4no. existing holiday pods, swimming pool, incidental building, extended driveway and annexe converted 24 weeks 5 days agoBook page
251009 | Stark reality of life in Cornwall revealed through 2025 Vital Signs Report 26 weeks 5 days agoBook page
251010 | Cornwall backs 20mph rollout; St Austell's the only town to reject the plans 26 weeks 6 days agoBook page
250930 | Cornwall’s 20 mph speed limits have made the roads much safer 28 weeks 2 days agoBook page
250905 - POSTPONED: Proposed resurfacing of Steamers Hill/Hatch's Hill that was due to happen end of July beginning of August 31 weeks 17 hours agoBook page
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