Allen-Bradley 20-COMM-ER Industrial Automation Co.

Allen-Bradley 20-COMM-ER

The Allen-Bradley 20-COMM-ER is an Ethernet/IP adapter module designed to facilitate communication between devices in an industrial network. This module provides reliable and efficient network connectivity, ensuring seamless data exchange across various components within an automation system.

Technical Description:

The Allen-Bradley 20-COMM-ER supports the EtherNet/IP protocol, enabling high-speed communication with data rates of 10 Mbps and 100 Mbps, both in full and half-duplex modes. It can handle up to 30 TCP connections, supporting two ‘class 1’ connections and fourteen ‘class 3’ connections.

The module utilizes CIP (Common Industrial Protocol) for explicit messaging, which is crucial for connected applications within the RSLogix 5000 environment. The adapter requires a minimum Requested Packet Interval (RPI) of 2 ms.

For drive communication, it uses the DPI protocol with data rates of 125 kbps or 500 kbps. The electrical consumption of the drive is 482 mA at 5V DC, supplied by the host, whether it be a drive or a DPI external comms kit.

Connectivity and Communication:

The module’s connection limits allow it to manage up to 30 TCP connections simultaneously. This includes supporting two ‘class 1’ connections and fourteen ‘class 3’ connections, which are critical for complex industrial networks requiring multiple simultaneous data streams.

The explicit messaging feature is used when ‘connected’ is chosen, making it suitable for various control applications. Activities that do not use a CIP connection include explicit messaging-based control using PCCC or register/assembly objects and unconnected explicit messaging.

Environmental and Mechanical Specifications:

The Allen-Bradley 20-COMM-ER operates efficiently within a temperature range of – 10 to 50 °C and can be stored at temperatures ranging from – 40 to 85 °C. The module supports relative humidity levels of 5% to 95%, non-condensing. It must not be installed in areas with volatile or corrosive gases, vapors, or dust. For long-term storage, it should be placed in a non-corrosive atmosphere to prevent damage.

The module’s compact design features dimensions of 19 mm (0.75 inches) in height, 86 mm (3.39 inches) in length, and 78.5 mm (3.09 inches) in width. It weighs approximately 150 g (5.2 oz), making it easy to handle and install in various industrial settings.

Parameter Configuration:

The 20-COMM-ER adapter includes parameters for configuring its operation. The DPI Port parameter displays the port to which the adapter is connected, typically port 5. The DPI Data Rate parameter indicates the data rate used by the drive, which can be set to either 125 kbps or 500 kbps.

The BOOTP/DHCP parameter enables the adapter to use BOOTP for setting its IP address, subnet mask, and gateway address. This feature can be enabled or disabled based on network requirements.

Frequently Asked Questions:

What are the connectivity options in the 20-COMM-ER module?

The 20-COMM-ER supports up to 30 TCP connections. This includes two ‘class 1’ connections and fourteen ‘class 3’ connections. It uses EtherNet/IP protocol for communication.

What are the supported data rates for the 20-COMM-ER?

The module supports data rates of 10 Mbps and 100 Mbps. These rates apply for both full duplex and half duplex modes. It ensures efficient network communication.

How does the 20-COMM-ER handle electrical consumption?

The 20-COMM-ER consumes 482 mA at 5V DC. This power is supplied by the host, either a drive or a DPI external comms kit. It ensures stable operation.

Product Specifications Table