ProSoft Technology MVI46-DFNT - Manual (Page 124)

Reference MVI46-DFNT ♦ SLC Platform
User Manual EtherNet/IP Client/Server Communication Module
Page 124 of 177 ProSoft Technology, Inc.
October 12, 2010
4.11.13 Function Code #502 - Protected Typed Logical Read (Three
Address Fields)
Column Parameter Description Parameter
1 Enable/Type Word 0=Disabled and 1=Continuous.
2 Virtual Database Address This parameter defines the database address of the first
data point to be associated with the command.
3 Poll Interval Minimum number of seconds to wait before polling with
this command.
4 Count Number of data word values to be considered by the
function.
5 Swap Type Code Swap type code for command: 0=None, 1=Swap words,
2=Swap words & bytes and 3=swap bytes in each word.
6 Node Address Address of unit to reach on the data highway.
7 Slot Number Processor slot number in Control/CompactLogix rack.
Use -1 for PLC5 & SLC processors.
8 Function Code = 502 Logical Read Command
9 File Type SLC file type letter as used in file name string. Valid
values for the system are N, S, F, A, …. P1
10 File Number SLC file number to be associated with the command. P2
11 Element Number The parameter defines the element in the file where
write operation will start. P3
12 Sub-Element Number This parameter defines the sub-element for the
command. Refer to the AB documentation for a list of
valid sub-element codes. P4
This function reads one or more words of data from a PLC data table. This
function should work on the following devices: SLC 500, SLC 5/03 and SLC 5/04.