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SIEMENS 6ES7340-1CH02-0AE0 SIMATIC S7-300 Communication Processor

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SIMATIC S7-300 · COMMUNICATION

6ES7340-
1CH02-0AE0

CP 340
RS 422/485 Interface

KEY PRODUCT POINTS

Compact Point-to-Point Communication

01	INTERFACE RS 422/485 (X.27)
02	TRANSMISSION RATE 2.4–19.2 kbit/s
03	DIMENSIONS 40 × 125 × 120 mm

Integrated 3964(R) and ASCII protocol drivers

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Product Details

SIMATIC S7-300 / CP 340

Overview Technical Application Contact FAQ Related Models

SIMATIC

S7-300
Communication Processor
Point-to-Point

INDUSTRIAL SERIAL COMMUNICATION

6ES7340-1CH02-0AE0

CP 340 — RS-422/485

A compact point-to-point communication processor for SIMATIC S7-300 systems, with an integrated isolated RS-422/485 serial interface.

INTERFACE

RS-422 / RS-485

MAX. RATE

19.2 kbit/s

01 / SERIAL LINK

RS-422 / RS-485 (X.27)

One integrated isolated serial interface.

02 / TRANSMISSION

2.4–19.2 kbit/s

Configured according to the serial communication requirements.

03 / CABLE REACH

Up to 1,200 m

Specified maximum point-to-point cable length.

04 / S7-300

CP 340 Platform

Designed for point-to-point communication within S7-300 automation systems.

PRODUCT ARCHITECTURE

Built Around Practical Point-to-Point Communication

Communication Processor Role

The 6ES7340-1CH02-0AE0 is the RS-422/485 version of the SIMATIC S7-300 CP 340 communication processor. It is intended for point-to-point data exchange between an S7-300 controller and compatible serial communication partners.

◆

SERIAL COMMUNICATION

The integrated interface supports RS-422/485 communication through an X.27 interface. The interface is electrically isolated, providing separation between the serial connection and the S7 internal supply.

Product family	SIMATIC S7-300 CP 340
Interface	RS-422 / RS-485 (X.27)
Interface quantity	1 isolated interface
Transmission rate	2.4 kbit/s to 19.2 kbit/s
Maximum cable length	1,200 m
Connector	15-pin Sub-D socket
Backplane current	Max. 165 mA at 5 V DC
Operating temperature	0 °C to +60 °C

FUNCTIONAL SCOPE

Protocols, Messages & Practical Integration

3964(R)

The CP 340 firmware integrates the 3964(R) transmission procedure. For this model, the maximum telegram length with 3964(R) is 1,024 bytes.

ASCII Driver

ASCII communication is integrated into the CP 340. The maximum telegram length specified for ASCII operation is 1,024 bytes.

Printer Driver

The CP 340 also provides an integrated printer driver. Supported printer families include HP DeskJet, HP LaserJet, IBM Proprinter and user-defined printers.

3964(R)

19.2 kbit/s max.

ASCII

9.6 kbit/s max.

PRINTER

9.6 kbit/s max.

Up to 1,024 bytes

SYSTEM FIT

Where CP 340 Adds Value

The CP 340 is designed for applications where an S7-300 controller needs a dedicated serial communication channel for point-to-point exchange with external devices.

Controller ↔ Serial Device Useful where a PLC must exchange serial data with a compatible external communication partner.	Point-to-Point Architecture The CP 340 is intended for dedicated serial communication rather than general-purpose Ethernet networking.
Existing S7-300 Systems Its S7-300 form factor and backplane connection make it suitable for integration into the corresponding rack architecture.	Longer Serial Runs The specified maximum point-to-point cable length reaches 1,200 m under the applicable interface conditions.

INSTALLATION PARAMETERS

Electrical & Environmental Profile

BACKPLANE SUPPLY

5 V DC

Power is supplied through the S7 backplane bus.

CURRENT CONSUMPTION

165 mA max.

Maximum current from the 5 V DC backplane supply.

OPERATING RANGE

0 to +60 °C

Specified ambient operating temperature range.

PURCHASE SUPPORT

Need 6ES7340-1CH02-0AE0?

Send your required quantity and application details for a quotation.

sales@amikon.cn

PHONE / WHATSAPP

86-18020776792

SALES MANAGER

Miya Zheng

ORDERING DETAILS

Prepare the Right Details for a Faster Quote

Delivery & Commercial Terms

Delivery	3–5 days
Warranty	12 months
Packaging	Brand New
Delivery way	E-packing / FedEx / EMS / TNT / DHL / UPS
Payment term	T/T

Inquiry Checklist

For an accurate quotation, please provide:

Part Number	6ES7340-1CH02-0AE0
Quantity	Required quantity
Destination	Delivery location
Required Date	Target date
Machine / System	Application context

BUYER QUESTIONS

6ES7340-1CH02-0AE0 FAQ

Can 6ES7340-1CH02-0AE0 be used when an S7-300 system requires RS-422/485 rather than RS-232? Yes. This order number corresponds specifically to the CP 340 variant with an integrated RS-422/485 (X.27) interface. The other CP 340 variants use RS-232C or 20 mA-TTY interfaces.	What protocol options should be considered for 6ES7340-1CH02-0AE0 replacement planning? The CP 340 integrates the 3964(R), ASCII and printer drivers. The CP 340 does not provide the CP 341's reloadable customer-specific driver capability, so the communication requirement should be checked before substitution.
Does 6ES7340-1CH02-0AE0 support long-distance serial connections? The Siemens data for this variant specifies a maximum point-to-point cable length of 1,200 m. Actual installation suitability still depends on the interface conditions, cable design and communication configuration.	Is 6ES7340-1CH02-0AE0 suitable for an existing CP 340 installation? It belongs to the CP 340 family and uses the S7-300 backplane architecture. For a replacement, verify the installed interface type, communication protocol, wiring and configured parameters rather than matching only the CP 340 family name.
What should be checked before ordering 6ES7340-1CH02-0AE0 for a maintenance project? Confirm the complete order number, RS-422/485 interface requirement, existing communication protocol, required transmission rate, connector and cabling arrangement, and the S7-300 system configuration. These checks help distinguish this variant from the RS-232C and 20 mA-TTY CP 340 versions.

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WHY AMIKON

Keeping Industrial Operations Moving

AMIKON focuses on hard-to-find automation components used across manufacturing environments, helping maintenance teams shorten procurement cycles and restore equipment operation.

◆ Worldwide delivery	◆ Multi-brand sourcing
◆ Maintenance support	◆ Global customer service

A broader automation network. A more direct maintenance route.

AMIKON works across more than 100 automation manufacturers and supports customers worldwide with a broad range of industrial automation components. The goal is straightforward: locate the required part and move it toward the maintenance team that needs it.

AFTER-SALES

Return Support

If an issue occurs after delivery

Please contact us within 7 days after receiving the item. Returned items should remain in their original condition and include the specific reason for the return. After the returned item is received, we can arrange a return or replacement according to the applicable order terms. Shipping costs incurred for the return are the buyer's responsibility.

6ES7340-1CH02-0AE0 · SIMATIC S7-300 CP 340 · RS-422/485

Industrial automation components · Global delivery · Technical purchasing support

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