EasyManua.ls Logo

YASKAWA MP3000 Series - Details on Protocols; Extended MEMOBUS Protocol

YASKAWA MP3000 Series
435 pages
To Next Page IconTo Next Page
To Next Page IconTo Next Page
To Previous Page IconTo Previous Page
To Previous Page IconTo Previous Page
Loading...
2.16 Details on Protocols
Extended MEMOBUS Protocol
2-378
2.16
Details on Protocols
This section provides details on the Extended MEMOBUS protocol, MEMOBUS protocol, and no-proto-
col communications.
Extended MEMOBUS Protocol
Message Structure
The following message structure is used in Ethernet communications. Use this as reference when develop-
ing a PC-based application.
When the Extended MEMOBUS protocol is used to send and receive data, each message consists of three
fields: a header field, a 218 header field, and the application data field.
The header is used for TCP/IP and UDP/IP. User programs do not need to be aware of this header because
it is automatically appended and removed in the 218IFD.
The 218 header is required when using the Extended MEMOBUS protocol for Ethernet communications.
User programs also do not need to be aware of the 218 header because it is automatically appended and
removed in the 218IFD.
The actual data for the Extended MEMOBUS protocol is stored in the application data field.
When communicating between a 218IFD and a host computer, the application on the host computer must
append and remove the 218 header.
The application data field contains the following parameter structure based on the combination of commu-
nications protocol and the code that is specified.
Communications Protocol Code Reference
MEMOBUS message communications BIN
MEMOBUS Binary Mode (page 2-381)
MEMOBUS message communications ASCII
MEMOBUS ASCII Mode (page 2-400)
General-purpose message communica-
tions (no-protocol)
BIN
General-purpose Message Binary Mode (page 2-400)
General-purpose message communica-
tions (no-protocol)
ASCII
General-purpose Message ASCII Mode (page 2-401)
Header
MEMOBUS or General-
purpose Message
Application will use only this
field.
218 header
TCP/IP header
218 header
Application data

Table of Contents

Other manuals for YASKAWA MP3000 Series

Related product manuals