Learn ARENA-SIMULATION-SCRIPTS with Real Code Examples

Updated Nov 27, 2025

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Explain

Scripts enhance Arena models with custom logic not possible through standard module configurations.

They provide control over entity behavior, event timing, resource logic, and system-wide orchestration.

SIMAN blocks define low-level process logic inside Assign, Decide, Hold, and custom blocks.

VBA scripts automate experiments, data import/export, and reporting.

Widely used in manufacturing, logistics, healthcare, defense, call centers, and supply chain simulations.

Core Features

SIMAN blocks for low-level process logic

Advanced attributes, variables, and sets

VBA event hooks and automation

File I/O scripting for dynamic data

Batch scripting for replications and scenarios

Basic Concepts Overview

Entities, attributes, variables, and sets

SIMAN logic blocks and statements

Arena modules vs SIMAN code

VBA event automation

Schedules, queues, and resources

Project Structure

Arena .doe model file

SIMAN code compiled behind the scenes

VBA module files in the Arena project

External data files (Excel, CSV, DB)

Experiment setup with scenarios/replications

Building Workflow

Start with standard modules

Identify logic requiring scripting

Add SIMAN blocks in Advanced Process panel

Embed logic inside Assign/Hold/Decide

Test with trace and animation debugging

Difficulty Use Cases

Beginner: custom calculations in Assign blocks

Intermediate: SIMAN logic combining Hold/Signal

Advanced: VBA automated experiments

Expert: hybrid SIMAN + VBA + DB integration

Architect: multi-model orchestration with scripting

Comparisons

Arena Scripting vs GUI-only - more control

Arena (SIMAN) vs FlexSim (C# Scripting)

Arena VBA vs AnyLogic Java automation

SIMAN vs custom DLL integration - low vs high-level

Arena expression builder vs manual SIMAN code

Versioning Timeline

1982 - SIMAN language creation

1993 - Arena Simulation built on SIMAN

2000 - VBA Integration

2010 - Modern template panels

2023 - Enhanced automation and extensibility

Glossary

SIMAN - Arena’s underlying simulation language

Entity - moving object in model

Attribute - entity-specific value

Variable - global model parameter