PP-DS tandem machine management with one requirement and two production orders

[Syl20]

Hello,

In my company, we have a tandem machine, which means that it has two different feeders and two different receivers, but the central part is the same. So we use the same article as input (different batches) and we produce the same article as output.

We use IBP for requirements management and ePP/DS for planning.

We're in the process of reviewing our production management and I've seen that it's possible to manage the requirement on this machine in IBP as a single machine, and then in ePP/DS to manage this machine as two identical but different machines with 2 different production orders.

The next requirement would be to be able to plan and move production orders in the same way, to maintain the operation of the tandem machine.

Does anyone already use this system, and if so, what type of settings should be used in ePP/DS?

I found this but I'm missing some information

### Managing Identical Scheduling on Two Different Machines in ePPDS

1. **Define Resources** :
- **Individual Resources**: Create separate resources for each machine in ePPDS. Each resource will have its own specific capabilities and characteristics.
- Resource Group**: Group the two machines together under a resource group. This allows the machines to be treated as a collective unit for planning and scheduling.

2. **Capacity Planning**:
- **Shared Capacity**: Configure machines to share their capacity. You can define available capacities for each machine, and ePPDS can then distribute tasks equally or according to specific rules.

3. **Scheduling strategies** :
- Sequencing Rules**: Define identical sequencing rules for both machines. This includes production priorities, cycle times and set-up times.
- Capacity constraints**: Configure capacity constraints so that both machines are used in a balanced and optimal way.

4. **Production Order Synchronization** :
- **Simultaneous Production Orders**: Create production orders that can be run in parallel on both machines. ePPDS can synchronize these orders to ensure that operations are performed identically

5. **Optimization and Simulation** :
- **Simulation Scenarios**: Use ePPDS simulation tools to test different production scenarios with both machines. This ensures that identical schedules are optimized.
- Resource Optimization**: Apply optimization algorithms to maximize the efficiency of both machines, taking into account constraints and capacities.

6. **Real-Time Monitoring and Adjustment** :
- Real-time monitoring**: Track the performance of both machines in real time using ePPDS monitoring tools. This enables scheduling to be adjusted to actual production conditions.
- Dynamic Adjustment**: In the event of a deviation or problem on one of the machines, ePPDS can dynamically adjust the scheduling to maintain production on the other machine.

### Specific configuration in ePPDS

1. **Create Resource Groups** :
- Go to resource configuration and create a resource group that includes both machines. This allows ePPDS to treat them as a collective unit.

2. **Define Capacities** :
- Configure capacities for each machine in the resource group. Make sure that capacities are set to allow equal distribution of tasks.

3. **Scheduling parameters**:
- Define scheduling parameters to ensure that tasks are scheduled identically on both machines. Use sequencing strategies and priority rules to align operations.

### Creating and Managing Simultaneous Production Orders in ePPDS

1. **Defining Production Orders** :
- When you create a production order in ePPDS, this order can be divided into several specific sub-orders or tasks that can be run simultaneously on different machines or production lines.

2. **Planning and Scheduling** :
- **Planning**: ePPDS plans tasks in such a way as to maximize the use of available capacities, while respecting the constraints of each machine.
- Scheduling**: Tasks are scheduled to run in parallel on the available machines. This involves optimal task sequencing to avoid bottlenecks and minimize downtime.

3. **Creation of Production Orders** :
- For each machine involved in the execution of simultaneous tasks, ePPDS generates separate production orders. Each production order contains specific details of the tasks to be carried out on that machine.

4. **Task Allocation**:
- Tasks from the main production order are allocated to individual production orders according to machine availability and capacity. This enables parallel and synchronized task execution.

### Using SAP ePPDS to Synchronize Production Between Two Different Machines

1. **Process Standardization and Modeling** :
- Master Data: Set up standardized master data for both machines. This includes product data sheets, routings and bills of materials (BOMs).
- Work Centers: Define work centers for both machines, ensuring that they have similar parameters (capacities, set-up times, cycle times, etc.).

2. **Planning and Scheduling** :
- Use ePPDS heuristics to generate production plans that respect the capacities and constraints of both machines. You can define rules to ensure that both machines produce equal or similar quantities of a given product.
- Detailed Scheduling: Implement detailed scheduling strategies to synchronize activities between the two machines. This includes management of dependencies, priorities and production sequences.

but it's not detailed enough

if anyone has any ideas, I'd love to hear from you.