What Are the Key Functions of Production Planning and Control?

Introduction
When a manufacturing business wants to run smoothly making the right products, at the right time, with the right cost and the right quality - it relies on a process called Production Planning and Control (PPC). In simple terms: planning what needs to be made, organising how to make it, and then controlling the actual manufacturing so things happen as they should.

At Gravitex Genesys, we help organisations transform their operations through smarter methods, better workflows and enhanced productivity - and understanding PPC is one of the foundations.

This blog explains the key functions of production planning & control, with everyday examples, so that anyone - even if you’re new to manufacturing concepts - can easily follow.

What is Production Planning and Control?

Before listing the functions, let’s set the scene.

• Production planning is about deciding what to produce, when, how much, which resources will be needed, and how the work will be done.
• Production control is then about making sure that the production process follows the plan, detecting deviations, taking corrective actions, and ensuring the desired output.
• Together, they form the backbone of manufacturing operations control, ensuring that everything from raw materials to finished goods moves through the system efficiently.

In short: planning sets the direction; control ensures you follow it and adjust when needed.

Why It Matters (Benefits)

Understanding the functions is important - but you may ask: why should a company do this?

Here are some benefits:

• Better use of resources (materials, machines, workforce).
• Reduced inventory cost (less waste, fewer stock-outs).
• Improved on-time delivery to customers and stronger customer satisfaction.
• Smooth workflow, fewer production bottlenecks or idle machines.
• Enhanced ability to respond to changes in demand, or disruptions.

Because at Gravitex Genesys, we support clients in achieving operational excellence - these advantages feed into better cost-performance and competitiveness.

Key Functions of Production Planning and Control

Below are the core functions - each explained in simple terms, with an example to illustrate it.

1. Material (or Raw Material) Management

What it is: Ensuring that all required materials/components are available in the right quantity, at the right time, so production isn’t delayed or idle.

Why it matters: If materials arrive late, machines stand idle. If you order too much, inventory costs rise and waste increases.

Example: A furniture manufacturer plans to make 100 chairs next month. They need timber, varnish, screws, fabric. The PPC team must ensure these are ordered and delivered so production can start on day one - not wait around for parts.

2. Equipment and Capacity Management

What it is: Ensuring machines, tools and workforce are ready, capable and scheduled appropriately. Monitoring downtime, maintenance, load on machines.

Why it matters: Even if materials are ready, if machines break down or the workforce is overbooked, production halts or quality drops.

Example: A car-assembly line schedules maintenance on a painting booth during a quieter period so it doesn’t disrupt peak production. The planner adjusts schedules accordingly.

3. Method and Process Planning (Production Method)

What it is: Deciding how things will be produced - the sequence of operations, routing, methods, and whether to make in-house or buy (“make or buy”).

Why it matters: Efficient method planning avoids unnecessary steps, reduces waste and cost, and enhances responsiveness.

Example: A clothing manufacturer decides whether to sew a panel in-house or outsource it. They map out the optimal sequence: cutting → stitching → finishing, and determine the best route through machines.

4. Routing

What it is: Defining the exact path the material or part takes through the operations: For example, from machine A to machine B, then inspection, then packaging.

Why it matters: Efficient routing reduces delays, unnecessary movement, and optimises workflow.

Example: In a bakery, bread dough moves from mixer → divider → proofing → oven → cooling. Routing ensures each step happens in the right area and order.

5. Scheduling

What it is: Assigning start times, end times, assigning when each job should run, which machines/workers will do it, and how many units.

Why it matters: Scheduling ensures production meets demand, machines are not idle, and costs are under control.

Example: For a mobile-phone manufacturer, 500 units need to be finished by Friday. Scheduling maps which line produces 100 units/day, shifts, breaks, machine changeovers.

6. Loading

What it is: Allocating work to machines, labour or work centres after scheduling - making sure the workload is balanced and resources aren’t overloaded.

Why it matters: Without proper loading, some machines may be overburdened while others are idle, causing inefficiency and delays.

Example: In a bakery, if the slicing machine is scheduled for too many loaves, it becomes a bottleneck. The planner ensures the slicing load is distributed to two machines to meet demand.

7. Dispatching

What it is: Releasing the work orders - sending the jobs to the shop-floor, giving instructions, issuing materials, tools and workers so production begins.

Why it matters: This is the action phase - without dispatching the plan stays on paper. Accurate dispatch ensures production starts as per plan.

Example: At 08:00, the workshop receives the job sheet: “Produce 200 units of Widget X today on Line 3. Use machines A and B. Material lots #3456. Operator John.” That is dispatching.

8. Follow-Up / Expediting

What it is: Monitoring production progress, checking for deviations, bottlenecks, material shortages, machine breakdowns; speeding up or adjusting work where needed.

Why it matters: Production rarely goes exactly as planned - follow-up ensures control and timely corrective action.

Example: On a car part production line, if machine B has broken down, the follow-up team redirects part of the job to machine C or shifts the schedule, so delivery isn’t delayed.

9. Inspection / Quality Control

What it is: Ensuring that the output of production meets the required standards of quality and specification. While this is often considered a separate function (quality control), it is still part of effective PPC.

Why it matters: Producing units that don’t meet quality means scrap, rework, waste, cost increase - and delays.

Example: A smartphone plant tests each unit after assembly; if a batch fails testing, the PPC system triggers a hold, and re-routing or rework is applied.

10. Evaluation and Feedback / Performance Measurement

What it is: After production, analysing what happened: Did we meet the schedule? Did we use resources efficiently? What were the bottlenecks? What corrective measures are needed?

Why it matters: Continuous improvement depends on feedback - if you don’t evaluate how you did, you can’t improve.

Example: After completing a batch of garments, the PPC department reviews performance: machine utilisation was 80% (target 90%), there were two breakdowns, material shortage for 2 hours. They then plan to fix the machine maintenance schedule and reorder frequency accordingly.

11. Re-planning / Adjustment

What it is: When things deviate significantly from the plan (for example large demand change, raw-material delay, machine breakdown), you may need to re-plan and adjust the schedule or resources.

Why it matters: Flexibility is key - markets and operations are dynamic; being rigid can lead to missed delivery or high cost.

Example: A sudden surge in demand for a product requires the company to move another product’s production later and accelerate this product - the PPC system must adapt the schedule accordingly, re-load machines, re-dispatch jobs, and ensure delivery.

Putting It All Together: A Simple Example

Imagine a medium-sized factory that makes metal water bottles. Let’s walk through how PPC functions would play out.

1. Forecast & Planning: The sales team projects demand of 10,000 bottles for next quarter. PPC plans for production of 10,000 bottles, determines required materials (steel sheets, lids, colour coating), required machines and workforce.
   
   
2. Routing & Method: Decide that steel sheets will go to the cutting machine → forming press → welding station → polish station → coating line → lid assembly → packaging.
   
   
3. Material Management: Order steel sheets, colour powder, lids, packaging boxes with lead time so they arrive before production starts.
   
   
4. Equipment & Capacity: Check machines are maintained, schedule preventive maintenance overnight before production starts; verify workforce availability.
   
   
5. Scheduling & Loading: Schedule two shifts producing 500 bottles per day for 20 days. Allocate machines A & B each for 250 bottles/day.
   
   
6. Dispatching: On day one, production job sheets are released: today 500 bottles, line 1 and line 2, steel sheets lot #789, lid lot #45.
   
   
7. Follow-Up/Expediting: On day five, machine B has downtime of 3 hours. The PPC team redistributes load to line 1 and adjusts remaining schedule so overall target is still met.
   
   
8. Inspection/Quality: Every batch of 100 bottles goes through a quality test (leak test, lid fit). One batch failed lid fit; batch is reworked and corrective cause (lid supplier variation) is identified.
   
   
9. Evaluation: At the end of the month, PPC reviews: target 5,000 bottles (half quarter) - actual 5,200 bottles produced. Machine utilisation: 88%. Material waste: 2% (target <1.5%). They note the lid supplier issue and machine B breakdown contributed.
   
   
10. Re-planning: For next month, PPC chooses to increase production to 5,500 bottles, orders extra lid stock, schedules machine B maintenance earlier, and shifts one day to make up for earlier delay.
    

This flows across planning and control - making sure the factory meets customer demand, uses resources wisely, minimises waste, and stays on schedule.

Why Gravitex Genesys Should Help You

At Gravitex Genesys, our service offering is rooted in using proven methodologies and operational best practices (including lean, Six Sigma, production planning & control) to help manufacturing operations achieve greater efficiency, reliability and cost-control.

Whether you’re upgrading your production scheduling, balancing your shop-floor, or building a more responsive production control system - we bring the expertise and the practical frameworks to support you.

Final Thoughts on Functions of Production Planning and Control

Production planning and control may sound like complex manufacturing jargon, but at its heart it is simply about coordinating materials, machines, methods, people and schedules so that you deliver the right product, at the right time, at the right cost and with the right quality.
By understanding and applying its key functions - from material management to scheduling, control and evaluation - any manufacturing business can move from reactive firefighting to proactive planning and smooth operations.

If you’d like to see how Gravitex Genesys can assist your organisation in designing or upgrading your PPC system, get in touch. We can tailor a solution that aligns with your unique production environment and business objectives.