SIMATIC S7-1200 G2 Communication Modules (CM 1241, CP 1243-1, CSM 1277) extend the communication capabilities of the S7-1200 G2. The CM 1241 provides an RS232/422/485 interface with push-in terminals, the CP 1243-1 an additional Industrial Ethernet interface, and the CSM 1277 an unmanaged 10/100 Mbps switch with 4 RJ45 ports.
Technical data
| Product | CM / CP / CSM |
|---|---|
| Product family | SIMATIC S7-1200 G2 (new generation) |
| Description | Serial and Ethernet communication modules |
| Example version | SIMATIC S7-1200 G2 CM 1241 Communication Module Interfaces: RS232/422/485, with push-in terminal block |
| Programming | STEP 7 (TIA Portal) |
Article numbers
| Version | Description | Article No. |
|---|---|---|
| Standard | SIMATIC S7-1200 G2 CM 1241 Communication Module Interfaces: RS232/422/485, with push-in terminal block | 6ES7241-1EA50-0XB0 |
| Standard | CP 1243-1 communications processor Communications processor CP 1243-1 for connecting SIMATIC S7-1200 G2 as an additional Ethernet interface and for connection to control centers via telecontrol protocols (DNP3, IEC 60870, TeleControl Basic), security (firewall, VPN) | 6GK7243-1BX50-0XE0 |
| Standard | CSM 1277 compact switch module Unmanaged switch for connecting a SIMATIC S7-1200 and up to three further nodes to Industrial Ethernet with 10/100 Mbps; 4 x RJ45 ports; external 24 V DC power supply, LED diagnostics, S7-1200 module including electronic equipment manual on CD-ROM | 6GK7277-1AA10-0AA0 |
| Standard | IE FC RJ45 plugs RJ45 connector for Industrial Ethernet with a rugged metal enclosure and integrated insulation displacement contacts for connecting Industrial Ethernet FC installation cables IE FC RJ45 plug 180 180° cable outlet; for network components and CPs/CPUs with Industrial Ethernet interface • 1 pack = 1 unit | 6GK1901-1BB10-2AA0 |
| Standard | • 1 pack = 10 units | 6GK1901-1BB10-2AB0 |
| Standard | • 1 pack = 50 units | 6GK1901-1BB10-2AE0 |
| SIPLUS | SIMATIC S7-1200 G2 CM 1241 Communications Module Interfaces: RS232/422/485, with push-in terminal block | 6AG1241-1EA50-7XB0 |
Technical data and article numbers are based on Siemens catalog ST 70 · 2026 (chapter SIMATIC S7-1200 G2) and are for information only. Image is representative.
For price, stock and lead time, use the Request a Quote button or call +90 533 945 27 94. Sending the article number is enough.
Tags: CM / CP / CSM, siemens s7-1200 g2, s7-1200, simatic plc, cm / cp / csm, 6ES7241-1EA50-0XB0, 6GK7243-1BX50-0XE0, 6GK7277-1AA10-0AA0, 6GK1901-1BB10-2AA0, 6GK1901-1BB10-2AB0, 6GK1901-1BB10-2AE0, 6AG1241-1EA50-7XB0