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Siemens SIMATIC NET: CP communication processors and SCALANCE switches
SIMATIC NET is the name under which Siemens groups its industrial communication products: CP communication processors, which connect PLCs and PCs to PROFIBUS and Industrial Ethernet networks, and SCALANCE network devices. When a network component fails, every machine that depends on that link stops.
The E-Repair catalogue covers about 80 SIMATIC NET part numbers.
🔗 Communication processors for PLCs (6GK7)
| PLC | Examples from the catalogue |
| S7-300 | CP 342-2, CP 342-5 (PROFIBUS), CP 343-1 (Industrial Ethernet), CP 343-2 |
| S7-400 | CP 443-1 (Industrial Ethernet), CP 443-5 (PROFIBUS) |
| S7-1200 | CP 1242-7, CP 1243-1 |
| S7-1500 | CP 1542-5, CP 1543-1 |
In the catalogue: 38 part numbers, root 6GK7.
💻 Communication processors for PCs (6GK1)
Cards and adapters that connect PCs and programming devices to industrial networks, such as CP 5611, CP 5622, CP 5603, CP 5711 and CP 1430, and network gateways such as the DP/EIB Link (root 6GK1415). In the catalogue: 24 part numbers, root 6GK1.
📡 SCALANCE (6GK5)
- SCALANCE X: Industrial Ethernet switches, for example XF208, and related media modules.
- SCALANCE W: Industrial Wireless LAN devices, such as W746-1, W747-1, W748-1 and W788.
- SCALANCE S and M: network security modules and routers for mobile communication.
In the catalogue: 19 part numbers, root 6GK5.
👉 6GK7343-1BA00-0XE0 – CP 343-1 for S7-300
👉 6GK5208-0BA00-2AF2 – SCALANCE XF208 switch
👉 6GK5746-1AA30-4AA0 – SCALANCE W746-1
👉 Search the catalogue: 6GK7 · 6GK1 · 6GK5
⚠️ Typical faults
- network ports damaged by overvoltages or electrical discharges
- CP processors that no longer establish the connection
- configurations lost after a fault, when no backup is available
- faulty power supply or fault signalling contacts in switches
🛠️ E-Repair services for SIMATIC NET
As Approved Partner Siemens – Industry Services, E-Repair supports production continuity:
🔧 Component-level repair in E-Repair's certified in-house laboratory, with diagnosis and repair where technically feasible.
♻️ Refurbishment with replacement of components subject to ageing and functional testing according to the agreed scope of work.
🚚 Advance replacement with a refurbished or new product, if available in stock and after a compatibility check.
💾 Support in saving and restoring network configurations.
🛠️ On-site and remote technical assistance for diagnosis and recommissioning.
✅ Standard 12-month warranty on the services for which it applies, extendable up to 24 months under the applicable conditions.
❓ Frequently asked questions
✔️ Does anything need reconfiguring after a CP repair?
Often the configuration resides in the PLC project and is reloaded; for some CPs and switches, however, the device configuration must be restored. It is advisable to save it before shipping.
✔️ Does E-Repair also work on SCALANCE switches?
Yes, SCALANCE devices are covered by E-Repair services for the SIMATIC range.
✔️ What is needed for the diagnosis?
The full part number, the firmware version if known and a description of the fault.
📚 Further reading
👉 Communication S7 · 👉 SIMATIC S7 · 👉 SIMATIC range
ℹ️ The information provided is general and indicative. Before purchase, installation or commissioning, check the data against the official Siemens documentation or contact E-Repair.
