User manual

Configuration 3-7

Network Duplex The duplex setting that the module will use to

communicate on the Ethernet network.

If the network duplex is set to Auto, the mod-

ule will auto-negotiate duplex.

Half, Full, or

Auto

Modbus Timeout The Modbus Timeout option provides a

means to detect the loss of the Modbus Scan-

ner from the Ethernet network. If the option is

enabled, and no Modbus requests are received

within the configured timeout period, the

module Run/Idle status will be set to Idle.

Important: Do not enable the Modbus Time-

out if an EtherNet/IP Scanner is used with the

BridgeWay. The BridgeWay will be prohib-

ited from entering Run mode if there is no

Modbus messages.

0-65000ms

I/O Size The I/O Size parameter provides the means to

configure the maximum size of the Input and

Output Assembly objects. This is useful when

accessing the BridgeWay Assembly object

using Class 3 or UCMM messages with mod-

ules that do not support large assembly buffer

sizes.

The I/O size includes the status and command

headers as well as the DeviceNet slave data.

See “I/O Data Summary” on page 6-10 for

details.

The actual output assembly size will be 4

bytes less than the I/O size configured. Again,

refer to “I/O Data Summary” on page 6-10 for

details.

I/O table sizes below 500 truncate the input

and output tables. Any DeviceNet slave data

that may be mapped beyond the configured I/

O table size will not be transferred to Ethernet.

Suggested maximum sizes for various Ether-

Net/IP devices:

MicroLogix 252

SLC 5/05 248

ControlLogix 500

4-500

Parameter Description Allowable

Range

Table 3-1 Ethernet Network Configuration Parameters