What systems is the CP340 compatible with?
It is designed for SIMATIC S7‑300 PLCs and integrates via the backplane bus.
1 actual photo shown first. Reference images are model-matched and must be confirmed before purchase.
Siemens
6ES7340-1AH02-0AE0
SIMATIC S7-300 CP340 RS232C communications processor
Siemens
From $384.07In stock
- GTIN
- 4025515072546
Product Description
The SIMATIC S7-300 CP340 is a single-channel communications processor providing an RS‑232C (V.24) interface for serial data exchange within S7‑300 systems. It mounts on the S7‑300 rack and is powered via the backplane bus, enabling simple integration without external power wiring. The module supports typical RS‑232C transmission rates in the 2.4 to 19.2 kbit/s range and uses a 9‑pin Sub‑D connector for cabling to serial devices such as terminals, printers, and legacy controllers. Electrical isolation on the interface helps reduce ground loop issues in industrial environments. The CP340 is designed for operation from 0 to 60 °C and features compact dimensions compatible with S7‑300 installations. Delivered as a spare part, it includes a configuration package on CD to streamline parameterization and setup within STEP 7 environments. This processor is suitable for applications requiring reliable point‑to‑point serial communication and straightforward integration into existing S7‑300 architectures.
Key Features
- •RS‑232C V.24 serial interface
- •Single isolated communication channel
- •Powered via S7‑300 backplane bus
- •9‑pin Sub‑D connector interface
- •Supports 2.4 to 19.2 kbit/s data rates
- •Operating temperature 0 to 60 °C
- •Configuration package included on CD
Buy Options
Condition, indicative price, stock, and lead time. Confirm current availability via RFQ.
ConditionPriceAvailabilityLead time
New
Price: $1,949
Availability: 12 in stock
Lead time: Ships from stock
Never Used
Price: $1,693
Availability: 5 in stock
Lead time: Ships from stock
Used
Price: $384.07
Availability: 89 in stock
Lead time: Ships from stock
FNFP
Price: $2,564
Availability: Available to order
Lead time: Quoted after RFQ
Specifications
- Manufacturer
- Siemens
- Brand
- Siemens SIMATIC
- Series
- S7-300
- Product type
- CP340 communications processor
- Interface
- RS‑232C (V.24), 1 isolated channel
- Transmission rate
- 2.4 to 19.2 kbit/s
- Connector
- 9‑pin Sub‑D
- Power supply
- Over S7‑300 backplane bus
- Operating temperature
- 0 to 60 °C
- Dimensions
- 125 mm H x 40 mm W x 120 mm D
- Net weight
- 0.357 kg
- Model number
- 6ES7340-1AH02-0AE0
- GTIN-13
- 4025515072546
- UPC
- 662643172690
- Country of origin
- Germany
- Part #
- 6ES7340-1AH02-0AE0
- Category
- PLCs/Machine Control
- Category
- PLC Module/Rack
- Weight
- 0.15 lbs
Before we quote this part
Actual photos when available
Nameplate, condition, and visible wear can be shared before quote when stock photos are not enough.
Test notes for used units
Power-on or function test status is stated when available, with clear condition grading.
Trackable global shipping
DHL, FedEx, UPS, or forwarder options can be quoted with packing photos and tracking details.
Clear DOA boundary
For tested units, quote terms can include 7-day DOA support unless otherwise stated.
Independent sourcing disclaimer
We are not an authorized distributor, reseller, or representative of Siemens, Mitsubishi, Omron, or other manufacturers listed on this site. All product names, trademarks, brands, and logos are the property of their respective owners. Products may be used, refurbished, surplus, or sourced from the secondary market unless otherwise stated.
Need 6ES7340-1AH02-0AE0 availability?
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FAQ
What connector is used for the serial interface?
A 9‑pin Sub‑D connector provides the RS‑232C connection.
Does the module require an external power supply?
No, it is powered through the S7‑300 backplane bus.
What data rates are supported?
Typical RS‑232C rates from 2.4 to 19.2 kbit/s are supported.
Is a configuration package included?
Yes, a configuration CD is included for setup and parameterization.