Few decisions in plant engineering generate as much internal debate as the choice between Allen Bradley and Siemens as a PLC platform standard. Both are mature, capable systems used extensively across Australian food and beverage manufacturing, and both can deliver excellent reliability when properly specified and maintained. For procurement and operations leaders, the more useful question is not which brand is objectively superior, but which platform best fits the existing plant environment, the available technician pool, and the long term support model the business wants to rely on.
Hardware ecosystem and plant standardisation
Allen Bradley, built on the Rockwell Automation ecosystem, tends to be the more common standard among manufacturers with strong ties to North American equipment suppliers, while Siemens has a deep installed base across European sourced machinery and many Australian beverage and dairy operations. For a plant building a new line from scratch, this is a relatively open decision. For most existing FMCG sites, however, the practical answer is largely already decided by what is already installed. Mixing platforms across a single production line, while sometimes unavoidable when integrating third party OEM equipment, adds complexity to fault finding and spares holding, so the strategic goal for most plants should be consolidating toward one primary standard wherever practical.
Programming environment and integration
Allen Bradley’s Studio 5000 environment and Siemens’ TIA Portal are both capable, modern programming environments, and the gap between them has narrowed considerably over the past decade. Where differences matter more in practice is integration with peripheral equipment. Siemens PLCs tend to integrate cleanly with Siemens drives, HMIs, and safety relays in a tightly coupled ecosystem, which is useful for projects like temperature and pressure controlled refrigeration systems, where PID loops, variable speed drives, and HMI feedback all need to work together reliably. Allen Bradley offers similarly tight integration within its own ecosystem and tends to have stronger native support for certain robotics and vision system integrations common in high speed packaging lines.
For a plant manager evaluating a new automation project, the practical question is which platform the existing line equipment, OEM machinery, and any planned future expansions are likely to use. A mismatch here creates ongoing integration friction that outweighs any inherent advantage of either brand.
Technician availability and support risk
This is where the decision becomes genuinely strategic rather than technical. Both Allen Bradley and Siemens have a reasonable base of qualified technicians across South East Queensland and the broader Australian east coast, but availability shifts regionally and by industry. A plant that standardises on a platform with thin local technician coverage creates a support risk that only becomes obvious during an emergency breakdown, when the nearest qualified engineer may be hours away or already committed elsewhere.
This is one of the strongest arguments for working with an engineering partner who maintains genuine dual platform capability rather than specialising exclusively in one brand. Bevtech Engineering and Automation’s team of control system engineers and industrial electricians work across both Allen Bradley and Siemens platforms, supported by TUV functional safety engineers for safety critical integration work. That breadth means a plant is not locked into a single support relationship, and it allows a phased migration strategy if a site is consolidating from a mixed fleet toward one standard over time, rather than requiring a disruptive single event changeover.
Total cost of ownership
Procurement teams evaluating PLC platform decisions should look beyond the upfront hardware quote. Spare parts pricing, software licensing models, the cost of training or hiring technicians familiar with the platform, and the resale or repurposing value of decommissioned hardware all factor into total cost of ownership. Siemens hardware has historically commanded a price premium in the Australian market relative to Allen Bradley in some product categories, though this varies by component family and has narrowed in recent years. The more material cost driver is usually the labour market for technicians, since a plant with a thin local pool of qualified Siemens or Allen Bradley engineers will pay a premium for emergency support regardless of the hardware cost difference.
A practical decision framework
For most FMCG plant managers, the decision comes down to four questions. What platform does the majority of existing line equipment already use. What platform do the in house maintenance team and preferred service partners already support. What does planned future capital equipment, particularly from key OEM suppliers, typically arrive configured with. And finally, is there a credible path to consolidate toward a single standard over the next capital cycle, reducing long term spares and training overhead.
Working through these questions with an integrator who is not commercially tied to a single hardware vendor produces a more honest recommendation than working with a reseller who only carries one brand.
Get an independent assessment
Bevtech Engineering and Automation has supported Australian food and beverage manufacturers across both Allen Bradley and Siemens platforms for over 25 years, including direct work with major industry names across the FMCG sector. If your plant is weighing a platform decision for a new line, an expansion, or a phased consolidation of legacy systems, the team can provide an independent assessment based on your existing equipment fleet and maintenance resourcing. Contact Bevtech on +61 400 881 321 or admin@bevtech.com.au, or visit the team at 25 Silvio St, Richlands QLD.
Leave a Reply