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SKU:6ES7350-1AH03-0AE0
SIEMENS 6ES7350-1AH03-0AE0 S7-300 Counter Module
Manufacturer: Siemens
Product No.: 6ES7350-1AH03-0AE0
Product Type: Counter Module
Product Origin: DE
Payment:T/T, Western Union
Weight: 250g
Shipping port: Xiamen
Warranty: 12 months
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Description
SIEMENS 6ES7350-1AH03-0AE0 SIMATIC S7-300 FM 350-1 Counter Module
The SIEMENS 6ES7350-1AH03-0AE0, also cataloged as the FM 350-1 Counter Module, operates as a dedicated single-channel high-speed counter for S7-300 systems, processing incremental encoder signals up to 500 kHz over the backplane bus.
Hardware Specifications
| Parameter | Specification |
|---|---|
| Model | 6ES7350-1AH03-0AE0 |
| Brand | SIEMENS |
| Product Type | FM 350-1 Counter Module |
| Series | SIMATIC S7-300 |
| Weight | 250 g (approx.) |
| Dimensions | 40 mm width x 125 mm height x 120 mm depth |
| Rated Supply Voltage | 24 VDC |
| Permissible Voltage Range | 20.4 V to 28.8 VDC (dynamic 18.5 V to 30.2 V) |
| Current from Load Voltage 1L+ | 40 mA max (without load) |
| Current from Backplane Bus | 160 mA max at 5 VDC |
| Power Loss | 4.5 W typ. |
| Counter Inputs | 1 channel, 32 bit or +/-31 bit |
| Counting Frequency | 500 kHz max (5 V), 200 kHz max (24 V) |
| 5 V Encoder Supply | 5.2 V +/-2%, 300 mA max |
| 24 V Encoder Supply | 1L+ (-3 V), 400 mA max |
| Digital Inputs | 3 (gate start, gate stop, counter set) |
| Digital Outputs | 2, short-circuit protected, 0.5 A rated |
| Front Connector | 1x 20-pin |
| Isolation | Tested at 500 V |
Counter Inputs and Encoder Interface
Single 32-bit counter channel accepts symmetrical incremental encoders with two pulse trains offset by 90 deg, asymmetrical incremental encoders, 24 V initiators, and 24 V directional elements with one pulse train and one direction level. The 5 V counter input uses RS 422 differential signaling with a 220 ohm terminating resistor and 1.3 V differential input voltage. The 24 V counter input accepts +11 V to +28.8 V for signal "1" and -28.8 V to +5 V for signal "0" at 9 mA typical input current, with a minimum pulse width of 2.5 us. Potential separation between channels and the backplane bus is provided by optocouplers on digital inputs, digital outputs, and the counter. Isochronous mode is supported for deterministic cycle-synchronized operation. A configuration package is included on CD.
Frequently Asked Questions
Q: What is the maximum counting frequency of the FM 350-1?
A: 500 kHz for the 5 V RS 422 differential input, and 200 kHz for the 24 V input.
Q: What is the weight and physical size of the 6ES7350-1AH03-0AE0?
A: Approximately 250 g, with dimensions of 40 mm width, 125 mm height, and 120 mm depth.
Q: What front connector does the module require?
A: One 20-pin front connector.
Field Installation Guidelines
Insert the module into an S7-300 rack and secure with the mounting screws. Wire the 20-pin front connector per the module pin assignment before energizing. Verify supply voltage at 1L+ and 2L+ is within 20.4 V to 28.8 VDC. Route encoder cables separate from high-current power conductors to preserve signal integrity at 500 kHz. Confirm the 5 V encoder supply load does not exceed 300 mA and the 24 V encoder supply load does not exceed 400 mA. Verify the encoder type and signal format match the configured counting mode before commissioning.
Additional Specifications
Scalar (V/f)
Vector
AC-powered
Buying Guide
- Confirm the exact model, part number, and specifications before ordering.
- Ensure compatibility with your current machinery or control systems.
- Reach out via sale@etowonauto.com or +8617859788089 for technical assistance.
- Review delivery options, lead times, and shipping requirements.
- Follow manufacturer instructions and best practices during installation.
Shipping And Return
In-stock items are typically dispatched the same business day. For products not currently in stock, dispatch times may vary based on availability. International shipping is available, and shipping costs are calculated according to destination, weight, and carrier selection.
Returns are accepted within 30 days of receipt, provided items are unused and in original condition. Return shipping costs are the responsibility of the customer. Please contact us before returning any item to receive return authorization.
For more details, please review our Shipping & Return Policy.

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