ProSoft Technology MVI56-GEC - Manual (Page 76)

Reference MVI56-GEC ♦ ControlLogix Platform
User Manual Generic ASCII Ethernet Communication Module
Page 76 of 108 ProSoft Technology, Inc.
October 8, 2010
Write Block
These blocks of data transfer information from the ControlLogix processor to the
module. The following table shows the structure of the output image used to
transfer this data.
Word
Offset Description
0 Block Sequence Number (Read block number as set by module)
Transmit
Data
1 Server/Client Number for data to transmit. If the word contains a value
of -1, no transmit data is present. If the word contains a value from 0 to
maximum number of servers -1, the block contains data to send from
the specified server in the module. If the word contains a value from 10
to 14, then the block contains data to send from one of the clients.
2 Number of characters to transmit to a server or client. Each block can
transmit up to 400 bytes of data. If this word contains a value of -1, the
block contains 400 bytes of data and more blocks of data are to follow.
When the module received the last block containing a positive value
representing the number of bytes in the block, the server or client will
transmit the data to the end device.
3 to 202 Data to transmit on specified server or client.
Transmit
Control
203 to 212 Client connection request data.
213 to 235 Reserved for future use
236
Server[0] Control Word (1=Abort)
237 Server[1] Control Word (1=Abort)
238 Server[2] Control Word (1=Abort)
239 Server[3] Control Word (1=Abort)
240 Server[4] Control Word (1=Abort)
241 Client[0] Control Word
242 Client[1] Control Word
243 Client[2] Control Word
244 Client[3] Control Word
245 Client[4] Control Word
246 Server Control Word
247 Module Control Word contains a value of 0, -1, -2 or -3.