The following tables contain the tested and recommended capacities of the DeltaV Batch subsystem. Other capacities are listed in the System Capacities topic.
The values in the Fixed Limit column are limits imposed by the system that the user cannot exceed. The values in the Tested To Limit column are limits that were tested and are recommended that the user not exceed.
Controller Capacities
Controller Capacities |
Fixed Limit |
Tested To Limit |
| PLMs per controller: non-redundant | Limited by available memory in the controller. | 450 (varies by the size and complexity of the PLM) |
| PLMs per controller: redundant | Limited by the minimum available memory between the redundant controllers. | 450 (varies by the size and complexity of the PLM) |
| Unit Phases running simultaneously per unit module: redundant and non-redundant controller | 10 Unit phases can be marked as Always in Memory. This means that the phase is always able to be loaded so that it never fails to run because of over-commitment of controller memory resources. |
10 |
Note These capacities are based on the M-5 and newer controllers.
Batch System Capacities
A DeltaV system can include up to four enabled Batch Executives, four enabled Batch Historians, and four enabled Campaign Managers.
Batch Capacities |
Fixed Limit |
Tested To Limit |
| Phases per system (combination of Unit Phases and PLMs) | 3000 | 4780 |
| Phase Step actions in step (Run Logic) | 50 | 75 |
| Phase step assignments per action | 50 | 75 |
| SFC Parallel Steps (Phase Run Logic) | 50 | 75 |
| Unit Modules per system | None | 200 |
| PLMs assigned to a single unit | None | 260 |
| Unit Phases per unit | None | 120 |
| Sequential Steps in an Operation | None | 200 |
| Parallel Steps in an Operation (using PLMs) | None | 30 |
| Parameters (Input) per Phase | 99 | 99 |
| Parameters (Report) per Phase | 99 | 99 |
| Phase-to-phase messages | 50 | 100 |
| Operator prompts-messages | 100 | 200 |
| Number of recipe parameters | 1,000 | 1,500 |
| Number of formulas per batch | 600 | 900 |
| Number of authorizers for a recipe | 5 | 5 |
| Recipe Exchange connections | 4 | 4 |
| Remote Soft Phase workstations | 6 | 10 |
| Remote Soft Phases in parallel on max remote Soft Phase workstations | 65 | 100 |
| Remote Soft Phases in parallel on one remote Soft Phase workstation | 65 | 100 |
| Nodes connected to the Batch Executive 1 | None | 75 (50 is the recommended maximum.) |
| # of Batches per Batch Executive | 100 | 100 |
1 Nodes are counted as follows:
Note These capacities vary depending on other variables in the system, such as available memory in the controller, size of recipe, size of phase logic, and so on. The Tested To Limits are to be used as a guideline when determining your system's performance.