Siemens 6ES7341-1CH02-0AE0

CP 341 communications processor, RS 422/485

Image is for illustrative purposes only. Please refer to product description.

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Siemens SIMATIC S7-300 CP 341 point-to-point communications processor with an isolated RS 422/485 (X.27) interface, up to 115.2 kbit/s, ASCII, 3964(R) and RK 512, configuration package on CD.

Manufacturer: Siemens
Manufacturer part no.: 6ES7341-1CH02-0AE0
Product family: SIMATIC S7-300 PLC Modules
Type: Communications processor
Category: Industrial communication › Communication processors
Lifecycle: Discontinued
OEM successor: Not stated
Technical datasheet: Data sheet

Technical specifications

Manufacturer: Siemens
Manufacturer part no.: 6ES7341-1CH02-0AE0
Type: Communications processor
Application: Serial communications processor
Used with: SIMATIC S7-300 rack (S7-300 backplane bus)
Rated value (DC) / 24 V DC: Yes
Input current / from supply voltage L+, max.: 100 mA
Input current / from backplane bus 5 V DC, max.: 70 mA
Power loss, typ.: 1.6 W
Power loss, max.: 2.4 W
Interfaces/bus type: RS 422 / 485 (X.27)
Number of interfaces: 1; Isolated
Interfaces / Transmission rate, min.: 0.3 kbit/s
Interfaces / Transmission rate, max.: 115.2 kbit/s
Point-to-point connection / Cable length, max.: 1 200 m
Point-to-point connection / supported printers: Serial printers
Point-to-point connection / Connector type: 15-pin sub D socket
Point-to-point connection / Integrated protocol driver / 3964 (R): Yes; not with RS 485
Point-to-point connection / Integrated protocol driver / ASCII: Yes
Point-to-point connection / Integrated protocol driver / RK 512: Yes; not with RS 485
Point-to-point connection / Telegram length, max. / 3964 (R): 4 096 byte
Point-to-point connection / Telegram length, max. / ASCII: 4 096 byte
Point-to-point connection / Telegram length, max. / RK 512: 4 096 byte
Point-to-point connection / Transmission rate, RS 422/485 / with 3964 (R) protocol, max.: 115.2 kbit/s
Point-to-point connection / Transmission rate, RS 422/485 / with ASCII protocol, max.: 115.2 kbit/s
Point-to-point connection / Transmission rate, RS 422/485 / with printer driver, max.: 115.2 kbit/s
Point-to-point connection / Transmission rate, RS 422/485 / with RK 512 protocol, max.: 115.2 kbit/s
Diagnostics indication LED / Receive RxD: Yes
Diagnostics indication LED / Transmit TxD: Yes
Diagnostics indication LED / Group error SF (red): Yes

Show all 40 specifications

Ambient temperature during operation / min.: 0 °C
Ambient temperature during operation / max.: 60 °C
Ambient temperature during storage/transportation / min.: -40 °C
Ambient temperature during storage/transportation / max.: 70 °C
Block / FB length in RAM, max.: 6 100 byte; Data communication, sending and receiving
Design of electrical connection for supply voltage: 3 screw-type terminals: L+, M, GND
Width: 40 mm
Height: 125 mm
Depth: 120 mm
Weight, approx.: 300 g

Technical documents (1)

Siemens data sheet 6ES7341-1CH02-0AE0

Key features

Isolated RS 422/485 (X.27) interface, 15-pin sub-D socket
0.3 to 115.2 kbit/s; cables up to 1,200 m
Protocol drivers ASCII, 3964(R) and RK 512 (3964(R) and RK 512 not with RS 485)
Telegrams up to 4,096 bytes
Discontinued by Siemens on 1 October 2025; spare part only

About the Siemens 6ES7341-1CH02-0AE0

The Siemens 6ES7341-1CH02-0AE0 is the RS 422/485 version of the CP 341; its twin, the 6ES7341-1AH02-0AE0, has an RS 232C interface. The RS 422/485 version allows up to 1,200 m of cable, against 15 m for RS 232C. Siemens's data sheet gives transmission rates of 0.3 to 115.2 kbit/s, ASCII, 3964(R) and RK 512 drivers (the last two not with RS 485), a 15-pin sub-D socket and a 24 V DC supply. Siemens's data sheet marks it as a spare part.

What is the 6ES7341-1CH02-0AE0 used for?

It connects an S7-300 CPU to serial printers and other serial devices over long RS 422/485 lines.

Lifecycle and successor

Discontinued.

Before you order

What to photograph or confirm so the right unit is quoted.

Check the order number and the connector: RS 422/485 uses a 15-pin sub-D socket, RS 232C a 9-pin connector.

Other parts in the Siemens SIMATIC S7-300 family

Listed for reference. They differ from the 6ES7341-1CH02-0AE0 in rating, supply, interface or function and are not interchangeable with it unless Siemens says so. Match the part number on your unit.

Product	Type	Lifecycle	Qty Available	Price	Action
Siemens 6GK7343-1CX10-0XE0CP 343-1 Lean communications processor, Industrial Ethernet	Communications processor	Discontinued	On Request	On request	View
Siemens 6GK7343-1EX30-0XE0CP 343-1 communications processor, Industrial Ethernet, PROFINET IO controller	Communications processor	Discontinued	On Request	On request	View
Siemens 6GK7342-5DA03-0XE0CP 342-5 communications processor, PROFIBUS DP master/slave	Communications processor	Discontinued	On Request	On request	View
Siemens 6ES7340-1AH02-0AE0CP 340 communications processor, RS 232C	Communications processor	Discontinued	On Request	On request	View
Siemens 6ES7331-7PF11-0AB0SM 331 analog input, 8 AI, thermocouples, 16 bit	Analog input module	Discontinued	On Request	On request	View
Siemens 6ES7332-5HB01-0AB0SM 332 analog output, 2 AO, voltage/current, 12 bit	Analog output module	Discontinued	On Request	On request	View
Siemens 6ES7332-7ND02-0AB0SM 332 analog output, 4 AO, 16 bit, isolated per channel	Analog output module	Discontinued	On Request	On request	View
Siemens 6ES7338-4BC01-0AB0SM 338 position input module, 3 SSI encoders	Position input module	Discontinued	On Request	On request	View
Siemens 6ES7341-1AH02-0AE0CP 341 communications processor, RS 232C	Communications processor	Discontinued	On Request	On request	View
Siemens 6GK7343-2AH11-0XA0CP 343-2P AS-Interface master for S7-300 and ET 200M	Communications processor	Discontinued	On Request	On request	View
Siemens 6GK7343-1GX31-0XE0CP 343-1 Advanced communications processor, gigabit and PROFINET	Communications processor	Discontinued	On Request	On request	View
Siemens 6ES7351-1AH02-0AE0FM 351 positioning module for rapid/creep traverse drives	Positioning module	Discontinued	On Request	On request	View

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