Communication Modules Selection Guide: Technical Criteria & Application Standards
Communication Modules selection guide: technical parameters, mounting and compliance standards, and Schneider Electric, Delta Electronics, GMT comparison.
Communication modules are expansion and option units that give a PLC, drive or field device a network interface such as Modbus, CANopen, EtherCAT or EtherNet/IP. They are used so that devices can exchange data with a higher-level system, drives can be managed over the network through the PLC, and distributed I/O groups can be connected to the main processor. The category includes Schneider Electric Modbus serial, EtherNet/IP, CANopen and AS-i modules, fieldbus adapters such as the FDNA-01, FECA-01 and FEIP-21 for ABB drives, Delta DVP series left-expansion CANopen, BACnet MS/TP and Ethernet modules, and communication modules for GMT GTC series PID devices. Select the module first according to the PLC, drive or device series it will be installed on, then according to the network protocol, the master or slave role and the port count. They should not be confused with standalone gateways and serial converters; a communication module fits only the series specified by its manufacturer, and a gateway is used to bridge two different protocols. The Communication Modules category on Welibaba includes 31 active models from leading manufacturers such as Schneider Electric, Delta Electronics, GMT.
Key Technical Parameters for Selecting Communication Modules
To specify the right Communication Modules model for your panel or installation, verify the following parameters against your engineering schedule:
| Parameter | Typical Catalog Values | Verification Note |
|---|---|---|
| Series | Altivar, EASY MODICON M200, MasterPacT, Modicon | Verify against project schedule and load calculation |
| Product Type | Akıllı haberleşme modülü, Ana modül, Bağlantı adaptörü, Ethernet TCP/IP ağ modülü | Verify against project schedule and load calculation |
| Product Weight | 0.012 kg, 0.015 kg, 0.04 kg, 0.041 kg | Verify against project schedule and load calculation |
| Operating Ambient Temperature | -10…55 °C, -10…60 °C, -20…40 °C (IEC 60068-2-1 ve IEC 60068-2-2); -20…55 °C (IEC 60068-2-1 ve IEC 60068-2-2), -20…60 °C yatay kurulum; -20…50 °C dikey kurulum | Verify against project schedule and load calculation |
Installation, Compatibility, and Commissioning Checklist
- Electrical & Mechanical Matching: Confirm that rated voltage, current capacity, and mounting dimensions align with the upstream and downstream components in PLC Input and Output Modules.
- Environmental & Enclosure Rating: Check IP protection class, housing material, and terminal capacity for dusty, humid, or high-vibration industrial environments.
- Related Product Groups: If your application calls for a different form factor or rating, compare sibling categories such as Analog Input Modules, Analog I/O Modules, Analog Output Modules.
Frequently Asked Questions
What is the first parameter to check when selecting Communication Modules?
Start by confirming the circuit's rated electrical values and physical mounting dimensions, then use the technical attribute filters on the Communication Modules page to narrow down compatible series.
Which Communication Modules brands are available on Welibaba?
Welibaba currently stocks 31 active models in this category from manufacturers including Schneider Electric, Delta Electronics, GMT, complete with verified specifications and unit pricing.
How can I compare Communication Modules models by manufacturer part number?
You can search directly by manufacturer SKU/order code or use the category filter panel to compare equivalent models across brands side by side.