Introduction

These adapter modules are used on Ethernet remote I/O drops in 31 Quantum EIO installations:

  • 140CRA31200

  • BMXCRA312•0

A remote I/O drop can be connected directly to either the main ring or a remote I/O sub-ring.

NOTE: If you use a low-end CPU (140 CPU 6• 1••) (2 Mb or less), you can only install a maximum of 31 remote I/O drops. Of those 31 drops, you can only install a maximum of sixteen BMXCRA312•0 remote I/O drops. If you use a high-end CPU (140 CPU 6•• ••) (4 Mb or more), you can install a maximum of thirty-one BMXCRA312•0 or 140CRA31200 remote I/O drops.

Functionality

Adapter modules exchange data with the 140CRP31200 remote I/O head module on the local rack:

  • The 140CRA31200 module is an adapter module on a Quantum remote I/O drop.

  • The BMXCRA31200 and BMXCRA31210 modules are adapter modules on Modicon X80 remote I/O drops.

Features:

  • The input data from the Ethernet remote I/O drop is collected and published to the remote I/O scanner.

  • The output modules are updated with the data received from the remote I/O scanner.

  • The protocol used for exchange is EtherNet/IP.

  • The remote I/O scanner views the 140CRA31200 or BMXCRA312•0 module as a remote I/O adapter.

  • The exchanges are deterministic, which means that the time it takes to resolve a remote I/O logic scan is predictable.

External Features

These adapter modules have the same dimensions and installation constraints as other modules in their respective product lines (Quantum or Modicon X80):

1 LED display

2 rotary switches

3 SERVICE port (ETH 1)

4 DEVICE NETWORK port (ETH 2)

5 DEVICE NETWORK port (ETH 3)

NOTE: To help prevent dust from entering the unused Ethernet ports on these adapter modules, cover the ports with the stopper:

External Ports

Two of the Ethernet ports allow implicit I/O exchanges with a remote I/O scanner adapter. (An implicit I/O exchange has a maximum frame size of 1400 bytes.) The ports can be implemented alone or in redundant mode.

You can use a maximum of 31 adapters in a single Ethernet remote I/O network. For network topology planning, refer to the Quantum Ethernet I/O System Planning Guide.

These modules have up to three 10/100 Base-T Ethernet ports:

Port

Description

SERVICE

The SERVICE port allows the diagnosis of Ethernet ports and provides access to external tools and devices (Control Expert, ConneXium Network Manager, HMI, etc.). The port supports these modes:

  • access port (default): This mode supports Ethernet communications.

  • port mirroring: In this mode, data traffic from one of the other 3 ports is copied to this port. This allows a connected management tool to monitor and analyze the port traffic.

  • disabled

NOTE:

  • You can configure the SERVICE port either on line or off line.

  • In port mirroring mode, the SERVICE port acts like a read-only port. That is, you cannot access devices (ping, connection to Control Expert, etc.) through the SERVICE port.

  • There is no SERVICE port on the BMXCRA31200 adapter module.

Refer to Service Port Configuration.

DEVICE NETWORK

The DEVICE NETWORK copper port provides:

  • connections for remote I/O communications

  • cable redundancy
NOTE: Do not connect a device with a speed in excess of 100 Mbps to any port. If the device is configured for a speed that exceeds 100 Mbps, the Ethernet link may not be established between the device and the module through the port.

Cable Redundancy

Use a daisy chain network configuration that implements the RSTP service to establish redundant communications between the adapter module and a remote I/O scanner. The adapter operates normally when at least one of the 2 physical paths to the 140CRP31200 is valid. (For network topology planning, refer to the Quantum Ethernet I/O System Planning Guide.)