Industrial Automation
TestBot for PLC, SCADA, Modbus & BACnet System Validation
OVERVIEW
Industrial automation systems — PLCs, SCADA platforms, motor drives, and building management controllers — form the backbone of manufacturing, energy, and infrastructure. These systems operate continuously in harsh environments and must be validated for protocol correctness, control accuracy, and long-duration stability.
TestBot provides native Modbus and BACnet agent support, enabling industrial test teams to automate protocol-level validation, simulate sensor inputs via the I/O Module, and run extended soak tests without manual intervention. TestBot’s distributed agent model supports deployment alongside production equipment in factory environments.
Industrial Testing Capabilities
Modbus Protocol Testing
Modbus Protocol Testing
RTU, TCP, and ASCII protocol testing for PLC and field device validation
- Read and write Holding Registers, Coils, Input Registers, and Discrete Inputs
- Function code coverage: FC01–FC17 including diagnostics
- Exception response validation and error handling
- Multi-slave topology testing with broadcast and unicast addressing
- Timing and response latency measurement
BACnet System Testing
BACnet System Testing
Building automation and control network validation
- BACnet/IP and BACnet MS/TP protocol support
- Device and object discovery validation
- Read/Write property operations for all standard object types
- Alarm and event notification testing
- COV (Change of Value) subscription and notification validation
I/O Signal Validation
Digital & Analog I/O Testing
Validate embedded I/O interfaces using the TestBot I/O Module
- Digital input/output state testing (24V DC, relay, open collector)
- Analog 4–20mA and 0–10V signal generation and measurement
- PWM signal generation for motor and actuator control testing
- CAN DBC-based signal injection for field device simulation
- Real-time I/O monitoring and logging
Endurance & Stress Testing
Long-Duration & Stress Testing
Validate system stability under extended and peak load conditions
- Continuous 24/7 test cycle execution with automated pass/fail logging
- Bus load stress testing — simulate network saturation scenarios
- Response time profiling under varying poll rates
- Memory leak and resource exhaustion detection over time
- Automated restart and recovery validation
Typical Industrial Test Scenarios
| Test Scenario | TestBot Tool / Agent | Outcome |
|---|---|---|
| PLC Register Read/Write Cycle | Modbus Agent | All registers read/written correctly within defined cycle time |
| Multi-Slave Polling Test | Modbus TCP Agent | All 32 slaves polled, exceptions correctly flagged and logged |
| BACnet Device Discovery | BACnet Agent | All configured devices discovered, object lists validated |
| Analog Sensor Simulation | I/O Module | Controller reads correct process value at each milliamp step |
| 48-Hour Endurance Run | Modbus + I/O Module | Zero unhandled exceptions, stable response times throughout |
| Network Saturation Test | Modbus Agent (burst mode) | System degrades gracefully; no data corruption under overload |
PROTOCOLS & STANDARDS
Communication Protocols
Communication Protocols: Modbus RTU Modbus TCP Modbus ASCII BACnet/IP BACnet MS/TP Profibus
Standards Alignment
Standards Alignment: IEC 61508 IEC 61131 ISA-99 ISO 13849
Accessories
Accessories: I/O Module DRB CAN Agent
EXPLORE FURTHER
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Ethernet/IP, ProfiNet, and BACnet agents need zero hardware - download and start today.