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- Siemens
- 6AG1350-1AH03-2AE0
- Counter Module
- Germany
- 40 × 125 × 120 mm
- 0.291 kg
- Xiamen, China
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Product Overview
The Siemens 6AG1350-1AH03-2AE0 is a SIPLUS S7-300 FM 350-1 high-speed counter module for applications that require dedicated counting and measurement functions within an S7-300 automation system. The module uses one high-speed counting channel and can process incremental encoder signals at frequencies of up to 500 kHz, making it suitable for applications where the PLC’s standard scan cycle would not be sufficient for direct pulse counting.
In a machine such as a conveyor, rotary positioning station, packaging line, or production counter, the FM 350-1 can receive pulse signals from an incremental encoder and perform the counting independently of the normal cyclic CPU processing. It can also be used for frequency, period, and speed measurement, so the same module can support more than simple piece counting.
The 6AG1350-1AH03-2AE0 belongs to the SIPLUS S7-300 range and is intended for industrial applications with extended ambient conditions. This version is based on the FM 350-1 and can also support clock-synchronized operation with a suitable interface module in an ET 200M configuration.
Technical Specifications
| Parameter | Specification |
|---|---|
| Manufacturer | Siemens |
| Article Number | 6AG1350-1AH03-2AE0 |
| Product Family | SIPLUS S7-300 |
| Product Type | FM 350-1 Counter Module |
| Module Type | High-Speed Counter Module |
| Counter Channels | 1 |
| Maximum Counter Signal Frequency | Up to 500 kHz, depending on encoder signal |
| Supported Functions | Continuous counting, single counting, periodic counting, frequency measurement, period measurement, speed measurement |
| Encoder Application | Incremental encoder |
| Counting Control | Software gate / hardware gate |
| Compatible System | SIMATIC S7-300 / ET 200M configurations |
| Environmental Design | SIPLUS for extended ambient conditions |
| Dimensions | 40 × 125 × 120 mm |
| Weight | 0.291 kg |
Product Features
- Single-channel high-speed counting capability for S7-300 automation systems.
- Supports counting signals up to 500 kHz depending on the connected encoder and signal characteristics.
- Suitable for continuous, single, and periodic counting tasks.
- Can perform frequency, period, and speed measurement.
- Supports both software-controlled and externally controlled counting gates.
- Intended for incremental encoder applications.
- SIPLUS version suited to industrial environments with extended ambient requirements.
- Can be integrated into established S7-300 control architectures without assigning high-speed counting entirely to the CPU program.
Working Principle
The FM 350-1 receives high-frequency pulse signals from an incremental encoder or other suitable pulse source and processes the counting operation directly in the function module. Instead of waiting for the S7-300 CPU to detect every transition during its normal scan cycle, the dedicated counter hardware handles the incoming pulses.
Depending on the machine application, the module can perform continuous counting, single counting, or periodic counting. The count process can be enabled or stopped through the user program using the software gate, or controlled through an external hardware signal when the application requires a faster physical trigger.
The same high-speed input processing can also be used for measurement functions. By evaluating pulse timing, the FM 350-1 can determine frequency, period, or speed. This is useful for rotary equipment where encoder pulses represent shaft movement or rotational speed.
For applications involving precise machine timing, the counting function can be coordinated with the broader S7-300 architecture. From the specified release associated with article number 6AG1350-1AH03-2AE0, the FM 350-1 can also operate in a clock-synchronized configuration with a suitable interface module in an ET 200M system.
Role in a SIMATIC S7-300 Motion and Counting System
| System Element | Function |
|---|---|
| 6AG1350-1AH03-2AE0 | Performs high-speed counting and measurement tasks |
| S7-300 CPU | Executes machine logic and processes the counter data |
| Incremental Encoder | Generates pulses representing position or rotational movement |
| ET 200M Interface Module | Supports distributed configuration where applicable |
| Machine Actuator | Responds to control decisions based on measured counts or speed |
| HMI | Displays production counts, speed values, alarms, or machine status |
| Sensor / Pulse Source | Provides the signal used by the counter channel |
| S7-300 Backplane | Provides module integration within the central automation station |
Industrial Applications
| Industry | Typical Use |
|---|---|
| Packaging Machinery | Counting products, monitoring conveyor speed, and synchronizing production movements |
| Material Handling | Measuring conveyor movement and tracking item quantities |
| Machine Tools | Monitoring spindle or rotary-axis speed through encoder signals |
| Printing Equipment | Measuring roller speed and synchronizing material movement |
| Textile Machinery | Monitoring rotating components and production speed |
| Production Lines | High-speed product counting and machine cycle monitoring |
| Assembly Machinery | Tracking rotary mechanisms and triggering operations from encoder pulses |
| Process Equipment | Measuring rotational speed or pulse frequency in auxiliary machinery |
Installation and Maintenance
- Confirm the S7-300 configuration — Check the rack arrangement and CPU configuration before installing the FM 350-1.
- Install the module correctly — Mount the counter module securely in the designated S7-300 position and ensure proper backplane contact.
- Connect the encoder — Wire the incremental encoder or pulse source according to the required signal configuration.
- Check signal quality — High-speed counting is sensitive to signal integrity, so inspect cable routing, shielding, grounding, and connector condition.
- Configure the counting function — Set the required counter mode, measurement function, gating behavior, and related parameters in the engineering configuration.
- Test the gate signal — Verify that the software or hardware gate starts and stops counting at the intended machine conditions.
- Compare actual counts with machine movement — During commissioning, check that encoder pulses correspond correctly to the expected mechanical movement.
- Monitor measurement values — Compare speed, frequency, or period values with the actual machine condition when using measurement functions.
- Inspect connections during maintenance — Check the module seating, encoder wiring, shielding, and signal terminals during scheduled control cabinet inspections.
Related Components
| Component | Function / Relationship |
|---|---|
| 6AG1350-1AH03-2AE0 | SIPLUS S7-300 FM 350-1 high-speed counter module |
| 6ES7392-1BJ00-0AA0 | 20-pin front connector with spring-loaded contacts |
| 6ES7392-1BJ00-1AB0 | 20-pin front connector, larger quantity version |
| SIMATIC S7-300 CPU | Executes the control program and processes counter information |
| Incremental Encoder | Supplies high-speed pulse signals to the FM 350-1 |
| ET 200M Interface Module | Supports distributed clock-synchronized configurations where applicable |
| S7-300 Rack | Provides mechanical and electrical module integration |
| HMI System | Displays counter and measurement information to operators |
Recommended Related Models
| Model | Product Type | Typical Application |
|---|---|---|
| Siemens 6AG1350-1AH03-2AE0 | SIPLUS S7-300 FM 350-1 Counter Module | High-speed counting and measurement |
| Siemens 6ES7350-1AH03-0AE0 | SIMATIC S7-300 FM 350-1 Counter Module | Standard S7-300 high-speed counting |
| Siemens 6AG1350-2AH01-4AE0 | SIPLUS S7-300 FM 350-2 Counter Module | Multi-channel counting and dosing |
| Siemens 6ES7350-2AH01-0AE0 | SIMATIC S7-300 FM 350-2 Counter Module | Multi-channel counting applications |
| Siemens 6AG1352-5AH00-7AE0 | SIPLUS S7-300 FM 352 Electronic Cam Controller | Position-based machine control |
Key Advantages
- Dedicated high-speed counting without relying entirely on the standard PLC scan cycle.
- Supports counting, speed, frequency, and period measurement in one module.
- Suitable for incremental encoder applications with high-frequency pulse signals.
- Provides flexible counting control through software or external gating.
- Integrates directly into established SIMATIC S7-300 automation architectures.
- SIPLUS configuration supports applications with extended ambient conditions.
Technical FAQs
What makes the FM 350-1 suitable for high-speed counting?
The FM 350-1 processes counter pulses through dedicated hardware rather than depending on the normal S7-300 CPU scan cycle. The module can handle counter signal frequencies of up to 500 kHz, depending on the encoder signal and application conditions.
Can the 6AG1350-1AH03-2AE0 measure speed as well as count pulses?
Yes. The FM 350-1 supports speed measurement in addition to continuous, single, and periodic counting. It can also perform frequency and period measurement, making it suitable for rotary machinery and encoder-based monitoring.
What is the purpose of the software gate and hardware gate?
The software gate allows the S7-300 user program to control when counting starts or stops. The hardware gate uses an external signal for this function, which can be useful when the counting window must be controlled directly by a machine event.
What should be considered when connecting an incremental encoder?
The encoder signal type, wiring, shielding, grounding, pulse frequency, and cable installation should all be checked. At high pulse frequencies, poor signal integrity can lead to incorrect counts or unstable measurement values, so the encoder interface and wiring arrangement should be verified carefully.