6ES7340-1BH00-0AE0 | SIMATIC S7-300 CP 340 TTY Processor

6ES7340-1BH00-0AE0 | SIMATIC S7-300 CP 340 Communication Processor

The 6ES7340-1BH00-0AE0 is a SIMATIC S7-300 serial communication processor with a 20mA (TTY) interface. It enables reliable point-to-point data exchange for industrial automation. This module supports ASCII, 3964(R), and printer drivers. It comes with a configuration CD and is designed for simple integration.

• Brand: Siemens
• Model: 6ES7340-1BH00-0AE0
• Series: SIMATIC S7-300
• Module Type: Communication Processor (CP 340)

Product Description

• Compact CP 340 for serial communication
• Isolated 20mA (TTY) physical interface
• Supports ASCII, 3964(R), and printer drivers
• Includes configuration package on CD
• Transmission rates: 2.4 to 9.6 kbit/s (up to 19.2 kbit/s with 3964R)
• Max telegram length: 1024 bytes
• Cable length: 1000m passive, 100m active
• Power loss: 0.85 W
• Backplane current: 220 mA at 5V DC
• Dimensions: 40 x 125 x 120 mm (W x H x D)
• Weight: approx. 300 g

Technical Specifications

• Measurement Range: Point-to-point serial data up to 1024 bytes
• Frequency Response: 2.4 – 9.6 kbit/s (ASCII/printer), 19.2 kbit/s (3964R)
• Sensitivity: Active signal detection at 20mA
• Linearity: Stable data transmission without distortion
• Resolution: Byte-level data handling
• Temperature Range: 0°C to +60°C (operating)
• Environmental Tolerance: IP20, suitable for industrial environments
• Noise Immunity: Optically isolated interface
• Supported Printers: HP-Deskjet, HP-Laserjet, IBM-Proprinter, user-defined

Installation & Commissioning

• Easy plug-and-play into S7-300 backplane
• Configuration software included on CD
• Parameterization via STEP 7 (no external programmer needed)
• Diagnostic LEDs for quick status checking
• Supports printer drivers without complex setup
• Maintenance: firmware update via CP, no special tools required

Compatibility

• Fits all SIMATIC S7-300 racks
• Works with S7-300 CPUs (e.g., 31x, 41x series)
• Supports ASCII, 3964(R), and printer protocols
• Compatible with STEP 7 V5.x and TIA Portal (via legacy import)
• Can connect to TTY devices, printers, and modems

Certifications

• CE mark
• UL recognition
• cULus listed
• RoHS compliant

Package Contents

• 1 x CP 340 Communication Processor (6ES7340-1BH00-0AE0)
• 1 x Configuration CD (software + manuals)
• 1 x Product information leaflet

Warranty & Shipping

• 12-month warranty against manufacturing defects
• Ready to ship within 12–24 hours after order
• Shipping carriers: FedEx, UPS, DHL (tracked express)
• Global delivery with insurance

Expert Review

“Reliable and cost-effective serial communication for S7-300.” The CP 340 is a proven workhorse for legacy TTY devices. Its isolated interface ensures noise-free data in harsh plants. The printer driver support is a bonus for industrial reporting. Setup is straightforward with STEP 7. For new projects, consider the CP 341 if higher speed is needed. For existing S7-300 systems, this module is a perfect fit.

Manager’s Insight

“Keep your legacy equipment running without breaking the bank.” This CP 340 allows you to integrate old printers or scales into modern automation. It reduces downtime and avoids costly system overhauls. The 20mA TTY interface is still common in many industries. Stock this module to ensure spare parts availability and quick replacement.

Typical Applications

• Connecting industrial printers for batch reporting
• Communicating with weighing scales via TTY
• Data exchange with legacy PLCs or instruments
• Serial data logging in water/wastewater plants
• Interface to modems or radio transceivers

Frequently Asked Questions

• Q: What protocols are supported?
  A: ASCII, 3964(R), and printer drivers (HP, IBM, user-defined).
• Q: Can I use this with TIA Portal?
  A: Yes, but you need to import the GSD file or use STEP 7 V5.x for configuration.
• Q: What is the maximum cable length?
  A: Up to 1000m with passive termination; 100m with active.
• Q: Does it work with 24V DC?
  A: No, it draws 5V DC from the backplane bus (220mA).
• Q: How do I update the firmware?
  A: Use the configuration software on the CD or download from Siemens support.

Experience-Based Q&A

• Q: My printer prints garbage data. What to check?
  A: Verify baud rate, parity, and stop bits match the printer settings. Also check cable wiring (20mA active/passive).
• Q: The module does not appear in STEP 7 hardware catalog.
  A: Install the latest HSP (Hardware Support Package) or use the GSD file from the CD.
• Q: Can I send more than 1024 bytes?
  A: No, the CP 340 has a fixed maximum telegram length of 1024 bytes.

Selection Guide

• Choose CP 340 if you need a low-cost TTY interface for printers or simple ASCII devices.
• Choose CP 341 if you require higher speeds (up to 115 kbit/s) or RS422/RS485.
• Use CP 340 for S7-300 systems with limited I/O and no need for advanced protocols.
• For new installations, evaluate if TTY is still the best choice; otherwise, consider Ethernet alternatives.

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Email: sales@powergearx.com
WhatsApp: +86 18030005825

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