Rockwell Automation 1785-Lxxx Enhanced and Ethernet PLC-5 Programmable Controllers User Manual
Page 114

Publication 1785-UM012D-EN-P - July 2005
7-16 Communicating with a PLC-5 Adapter Channel
Each group/module that is programmed as an adapter channel block transfer
uses one byte in the adapter channel’s input destination file.
For example:
Use care when planning block-transfer and discrete transfers of data to an
adapter-mode controller channel.
00
03
04
07
10
13
14
17
00
03
04
07
08
11
12
15
Word
0
1
2
3
4
5
6
7
Output File
Input File
d for status.
Adapter Channel’s Input Destination File
Example Integer File
Scanner’s Output Image Table
module 0
module 1
A block transfer request for group 3, module 0
uses these bytes in the file. This byte is now
unavailable for discrete data transfer.
locations of module 0 and 1 data
ATTENTION
Use caution when performing data transfer. The
discrete output data is over-written by the block
transfer control on a group/module basis. If you write
both types of transfer to the same group slot,
unpredictable machine operation and possible damage
to equipment or injury to personnel can occur.
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