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MS-Connect 210 User’s Manual 2-15

Using Ethernet

EtherNet/IP Serial Interface (Class 0x68)

Data is sent and received on the serial port using explicit messaging. The host should

send Get_Attribute_Single (0x0E), Set_Attribute_Single (0x10) or vendor-specific service

Send_with_Response (0x45) to vendor-specific Object Class 104 (0x68), Instance 1,

Attribute 106 (0x6A).

The Set_Attribute_Single and Send_with_Response services include a 16 byte header

that specifies parameters for control of the serial interface. However, the

Set_Attribute_Single service cannot receive any data in the response so only the Send

parameters are valid.

The Get_Attribute_Single service does not supply any data, and so cannot specify any

parameters, but will always provide the 16 byte header in the response, along with all the

bytes available in the receive queue (maximum 470). The host should insure that adequate

space is available for the maximum response data.

The Send_with_Response service is the most flexible, and can supply data in both the

command and response. This service is useful for sending a serial command and waiting

for a serial response based on a defined protocol.

All UINTs are little-endian, with the least significant byte or USINT sent first, followed by

the most significant byte.

Attribute

ID (dec)

Access Name Data Type

Description

106

Get/Set/

SendResp

Serial

Interface

Struct. of:

UINT Send length (0-470)

UINT Receive length (0-470)

UINT Receive timeout [ms]

USINT Receive idle timeout (low byte) [ms]

USINT Reserved

USINT Send flags

USINT Receive flags

USINT Reserved

USINT Frame trailer (Postamble) flags

USINT [4] Frame trailer (Postamble) (1-4 bytes)

USINT [x] Data

1 2 ... 38 39 40 41 42 43 44 45 46 47 48 ... 67 68

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