CM 1243-2 communication module for integrating an S7-1200 station with an AS-Interface network.
Siemens 3RK7243-2AA30-0XB0 is the SIMATIC S7-1200 CM 1243-2 communication module operating as an AS-Interface master. Official Siemens data identifies one AS-i interface, AS-i specification V3.0 support and communication through the S7-1200 backplane. The module is intended to connect distributed AS-i slaves to an S7-1200 automation station for compact sensor and actuator networking. Procurement should verify the complete order code, CPU and project configuration, AS-i network layout, slave count, addressing, power and data decoupling, removable terminal assignment, STEP 7 configuration and the installed mounting position before replacement.
| Field | Verified Information |
|---|---|
| Product Condition | Original new |
| Availability | In stock |
| Official Lifecycle | PM300: Active Product |
| Warranty | With 1 year warranty |
| Shipping | Worldwide shipping options available |
| Field | Verified Information |
|---|---|
| Manufacturer | Siemens |
| Complete Part Number | 3RK7243-2AA30-0XB0 |
| Product Type | SIMATIC S7-1200 CM 1243-2 AS-i master communication module |
| Product Family | SIMATIC S7-1200 |
| AS-Interface Specification | V3.0 |
| AS-Interface Ports | 1 |
| Maximum Transfer Rate | 167,000 bit/s |
| AS-i Bus Cycle | 5 ms with 31 slaves; 10 ms with 62 slaves |
| Backplane Current | Maximum 0.25 A from the S7-1200 backplane |
| AS-i Cable Current | Maximum 0.1 A without external 24 V supply |
| Power Dissipation | 2.9 W |
| Mounting | Snap-on mounting on 35 mm DIN rail |
| Dimensions | 30 x 100 x 75 mm |
| Included Connection Hardware | Removable terminals |
| Net Weight | 0.154 kg according to Siemens Industry Mall |
| Country of Origin | GERMANY |
| Application Area | Product-Specific Guidance |
|---|---|
| Control System Fit | SIMATIC S7-1200 stations requiring an AS-Interface master connection. |
| System Role | Coordinates communication between the controller and connected AS-i slaves. |
| Typical Applications | Compact sensor and actuator networks in machinery, conveyors, handling and assembly systems. |
| Maintenance Use | Exact CM 1243-2 replacement where project, addressing and wiring must be preserved. |
| Configuration Importance | CPU support, STEP 7 project, slave profile, addressing, topology and AS-i power arrangement must match. |
Siemens identifies 3RK7243-2AA30-0XB0 as PM300: Active Product. This page retains that exact lifecycle wording and does not infer phase-out or discontinuation. Compatibility still depends on the S7-1200 CPU, project configuration, AS-i slave profiles, addressing, power arrangement, terminals and network topology.
Send us the complete part number, required quantity, destination country and product label photos. Our team will check availability, condition, compatibility requirements and shipping options.
Email: sales6@apterpower.com WhatsApp: +86 18159889985
Structured verification, inspection, documentation and delivery support for 3RK7243-2AA30-0XB0.
Our workflow begins with exact model and suffix verification against the purchase request and available product label. For this CM 1243-2, the team compares the S7-1200 host, AS-i V3.0 network, slave count, addressing, cycle requirements, shaped cable, power arrangement, removable terminals and project configuration. Compatibility is reviewed for the installed station without promising automatic interchangeability.
| Service Stage | What Stockoems Checks |
|---|---|
| 1. Model and suffix verification | The complete 3RK7243-2AA30-0XB0 order code, manufacturer label and visible hardware details are compared. |
| 2. Condition confirmation | Condition, connectors, housing, included items, seals and visible handling marks are reviewed from available evidence. |
| 3. Technical compatibility review | S7-1200 CPU support, backplane position, AS-i V3.0 network, slave count, addresses, cycle time, shaped cable, terminal wiring and project configuration are compared. |
| 4. Product and label photo confirmation | Readable product, nameplate, connector and packaging photographs can be coordinated before shipment. |
| 5. Protective packaging | Antistatic and impact-protective materials are selected to protect the module housing, backplane connection and removable terminals. |
| 6. Worldwide shipping | Available worldwide shipping options are reviewed after destination, quantity and packaging scope are confirmed. |
| 7. Shipment tracking | Tracking details and shipment records are provided for the agreed logistics method. |
| 8. Customs documentation | Commercial invoices, packing information and available customs documentation are prepared for the shipment. |
| 9. Written warranty terms | The applicable one-year commercial warranty scope is documented before order completion. |
| 10. Return authorization | Return conditions and authorization steps are explained in writing before approval. |
| 11. After-sales response | Questions about received condition, documentation and installation evidence are handled through a traceable service channel. |
The service team coordinates label review, Siemens-document comparison, terminal inspection, packaging preparation, logistics communication and after-sales records. Procurement teams receive a clear description of condition and included items. Engineers should provide the S7-1200 CPU, STEP 7 project, module position, AS-i topology, slave profiles and addresses, cable and power arrangement. Unverified inventory quantities and fixed delivery dates are not promised; commercial timing is reviewed after exact scope confirmation.
Send us the complete part number, required quantity, destination country and product label photos. Our team will check availability, condition, compatibility requirements and shipping options.
Email: sales6@apterpower.com WhatsApp: +86 18159889985
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Send us the complete part number, required quantity, destination country and product label photos. Our team will check availability, condition, compatibility requirements and shipping options.
Email: sales6@apterpower.com WhatsApp: +86 18159889985
