ProSoft Technology MVI46-DFNT - Manual (Page 119)

MVI46-DFNT ♦ SLC Platform Reference
EtherNet/IP Client/Server Communication Module User Manual
ProSoft Technology, Inc. Page 119 of 177
October 12, 2010
4.11.8 Function Code #102 - Read-Modify-Write (PLC-5 Command)
(Binary Address)
Column Parameter Description Parameter
1 Enable/Type Word 0=Disabled, 1=Continuous and 2=Conditional.
2 Virtual Database Address This parameter defines the database address for the
data 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: Always zero (0).
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 = 102 Read-Modify-Write Command.
9 File Number PLC-5 file number to be associated with the command.
If a value of -1 is entered for the parameter, the field will
not be used in the command, and the default file will be
used. P1
10 Element Number The parameter defines the element in the file where
write operation will start. If a value of -1 is entered for
the parameter, the field will not be used in the
command, and the default element will be used. P2
11 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. If the value is set to -1, the
default sub-element number will be used. P3
12 Not Used This field is not used by the command. Values entered
in this column will be ignored. P4
This function writes one or more words of data to a PLC data table. This function
should work on the following devices: PLC-5. The command constructed
contains an AND mask and an OR mask. Values in the AND mask have the
following definitions: 0=Reset and 1=Leave the Same. Values in the OR mask
have the following definitions: 0=Leave the Same and 1=Set. The module is
responsible for setting the mask values to correctly construct the message from
the virtual database values.