RS232C point-to-point communications processor for SIMATIC S7-300, supplied with the Siemens configuration package.
Siemens 6ES7340-1AH02-0AE0 is a SIMATIC S7-300 CP 340 communications processor for point-to-point serial links through an RS232C (V.24) interface.
The module supports 3964(R), ASCII and printer protocols. It is powered from the S7-300 backplane bus and is intended for engineered serial communication between the controller and compatible external equipment.
| Parameter | Specification |
|---|---|
| Manufacturer | Siemens |
| Complete part number | 6ES7340-1AH02-0AE0 |
| Official designation | CP 340 communications processor with RS232C interface |
| Product family | SIMATIC S7-300 / CP 340 |
| Product lifecycle | PM400: Announcement of product phase-out |
| Product phase-out since | 2023-10-01 |
| Parameter | Specification |
|---|---|
| Interface | RS232C (V.24) |
| Supported protocols | 3964(R), ASCII, printer |
| Maximum rate with 3964(R) | 19.2 kbit/s |
| ASCII / printer rate | 9.6 kbit/s |
| Supply | Via SIMATIC S7-300 backplane bus |
| Operating temperature | 0 to 60 °C |
| Storage / transport temperature | −40 to 70 °C |
| Dimensions (W × H × D) | 40 × 125 × 120 mm |
| Weight | Approx. 300 g |
| Included item | Configuration package |
| Application | Practical use |
|---|---|
| Serial device integration | Connects compatible serial devices to an S7-300 controller through RS232C. |
| Protocol-based data exchange | Supports engineered communication using 3964(R), ASCII or printer protocols. |
| Machine and process automation | Suitable for point-to-point links in established SIMATIC S7-300 installations. |
| Replacement projects | Use when the exact CP 340 interface, protocol and mechanical fit are confirmed. |
Siemens lists 6ES7340-1AH02-0AE0 as PM400: Announcement of product phase-out, with product phase-out since 2023-10-01. Confirm exact-model availability and replacement planning before procurement.
It is a SIMATIC S7-300 CP 340 communications processor with an RS232C point-to-point interface.
The exact module supports 3964(R), ASCII and printer protocols.
Siemens technical data specifies up to 19.2 kbit/s with 3964(R), and 9.6 kbit/s for ASCII or printer operation.
The module measures 40 × 125 × 120 mm and weighs approximately 300 g.
Confirm the RS232C interface, protocol, cable pinout, rack slot, configuration requirements and lifecycle status.
Send the exact part number, required quantity and destination for availability, compatibility, delivery and warranty checks.
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Practical support from exact-model identification and compatibility review through inspection, packing and international delivery.
Our office team checks the complete order code, quantity, destination and documentation requirements before sourcing begins.
Received items are checked for model marking, housing condition, connector integrity and traceability before packing.
Protective packing is selected for the equipment type, route and delivery method, with shipment tracking arranged for global destinations.
| Stage | What We Check | Customer Value |
|---|---|---|
| 1. Identification | Manufacturer, complete part number, suffix and nameplate details | Reduces incorrect-model risk |
| 2. Compatibility review | Installed S7-300 rack, RS232C device, protocol, cable, software and module configuration | Supports informed replacement decisions |
| 3. Supply verification | Available condition, quantity, lead time and warranty basis | Clarifies commercial expectations |
| 4. Inspection and packing | Markings, visible condition, connectors, packing and dispatch records | Improves delivery traceability |
Share the required quantity, destination and installed S7-300, RS232C device, protocol and cable configuration. We will check availability, compatibility, global delivery options and applicable warranty terms.
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Send the exact manufacturer part number, required quantity and destination. We will check availability, model identity, compatibility requirements, global delivery options and applicable warranty terms.
