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Siemens 6ES7340-1AH02-0AE0 SIMATIC S7-300 CP 340 RS232C Communication Processor
Manufacturer: Siemens
Condition: Brand New
Lead Time: In Stock
Origin: Germany
Warranty: 12 Months
Email: [email protected]
whatsApp: +86-18150117685
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Overview
- Match the RS232C pinout and any RTS/CTS handshake wiring.
- Choose 3964(R), ASCII or printer parameters for the actual partner.
- Set ASCII frame termination, receive buffering and flow control together.
- Reserve the communication-block RAM and the 165 mA backplane current budget.
SIMATIC S7-300 • RS232C POINT-TO-POINT
6ES7340-1AH02-0AE0 SIMATIC S7-300 CP 340 RS232C Communication Processor
Isolated CP 340 RS232C serial processor with ASCII, 3964(R) and printer drivers and configurable receive framing.
At a Glance
| Brand | Siemens |
|---|---|
| Model | 6ES7340-1AH02-0AE0 |
| Product Type | Communication processor |
| Core Function | RS232C point-to-point communication |
| Compatible Series | SIMATIC S7-300 |
RS232C hardware
One isolated channel connects the communication partner through a 9-pin Sub-D interface.
Receive-frame control
ASCII frames can end by character timeout, configured end characters or fixed length.
Flow-control selection
None, XON/XOFF and RTS/CTS flow control can be selected for the ASCII driver.
Product Overview
6ES7340-1AH02-0AE0 is the CP 340 RS232C variant for an S7-300 station. It provides an isolated V.24 serial connection for a nearby controller, computer, printer or another compatible communication partner.
Its ASCII receive settings include configurable telegram boundaries and buffering. The module is powered by the S7-300 backplane and uses communication function blocks in the PLC program.
Key Functions
Point-to-point serial exchange
Integrated 3964(R), ASCII and printer drivers exchange data with a compatible RS232C partner.
Configurable ASCII framing
The receiver recognizes frame completion by a character delay, one or two end-of-text characters or a fixed character count.
Receive flow management
Configurable buffering and XON/XOFF or RTS/CTS flow control adapt the serial link to the partner’s data flow.
Official Specifications
| Operating power source | 5 V DC backplane bus |
|---|---|
| Maximum backplane current | 165 mA |
| Power loss | 0.6 W typical; 0.85 W maximum |
| Serial channel and connector | 1 isolated channel with 9-pin Sub-D connector |
| Maximum 3964(R) rate | 19.2 kbit/s |
| Maximum ASCII and printer rate | 9.6 kbit/s |
| Maximum ASCII and 3964(R) telegram length | 1,024 bytes |
| Maximum RS232C cable length | 15 m |
| ASCII character-delay setting | 4–65,535 ms, in 1 ms steps |
| Buffered receive frames | 1–250 configurable |
| ASCII flow-control options | None, XON/XOFF or RTS/CTS |
| Dimensions | 40 × 125 × 120 mm |
| Approximate weight | 300 g |
| Operating temperature | 0–60 °C |
| Storage and transport temperature | −40–70 °C |
Frequently Asked Questions
Is 6ES7340-1AH02-0AE0 the right choice for a 20 mA TTY communication partner?
A TTY partner requires the 20 mA-TTY CP 340 variant because this version provides an RS232C interface.
Can I reuse a 15-pin RS422/485 cable with 6ES7340-1AH02-0AE0?
The RS232C version uses a 9-pin Sub-D connector, so the 15-pin interface cable is unsuitable.
Can I place the serial partner 20 m from 6ES7340-1AH02-0AE0?
The specified RS232C point-to-point cable length is limited to 15 m.
Can I enable hardware handshaking for ASCII on 6ES7340-1AH02-0AE0?
The ASCII driver permits RTS/CTS flow control and automatic control of V.24 signals.
How many incoming ASCII frames can I buffer with 6ES7340-1AH02-0AE0?
The receive buffer can be configured for between one and 250 message frames.
How can I mark the end of an ASCII message on 6ES7340-1AH02-0AE0?
Use a character-delay timeout, one or two configured end-of-text characters or a fixed message length.
How much PLC RAM should I reserve for the communication function block used with 6ES7340-1AH02-0AE0?
The sending and receiving function block requires up to 2,700 bytes in RAM.
