ProSoft Technology MVI69-DFCM User Manual

Page 95

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Reference MVI69-DFCM

♦ CompactLogix or MicroLogix Platform

DF1 Interface Module

ProSoft Technology, Inc.

Page 95 of 117

November 3, 2008

Column

Parameter

Description

Parameter

6

Node Address

Address of unit to reach on the data highway.

7

Function Code = 2

Unprotected Read Function

8

Word Address

Word address where to start the read operation.

P1

9 to 11

Not Used

These fields are not used by the command. Values
entered in these columns will be ignored.

P2 to P4

This function reads one or more words of data from the PLC memory. This
function should work on the following devices: 1774-PLC, PLC-2, PLC-3, PLC-5,
SLC 500, SLC 5/03, SLC 5/04 and MicroLogix 1000.

Function Code #3 - Protected Bit Write (Basic Command Set)

Column

Parameter

Description

Parameter

1

Enable/Type Word

0=Disabled, 1=Continuous and 2=Conditional.

Virtual Database Address

This parameter defines the database address for the
data to be associated with the command. The address
defined represents a register address and not a bit
address. This function will update one or more words of
data as defined by the count parameter.

3

Poll Interval

Minimum time in tenths of a second 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

Function Code = 3

Protected Bit Write Function

8

Word Address

Word address where to start the write operation.

P1

9 to 11

Not Used

These fields are not used by the command. Values
entered in these columns will be ignored.

P2 to P4

This function sets or resets individual bits within a limited area of the PLC data
table. This function should work on the following devices: 1774-PLC, PLC-2,
PLC-3, PLC-5 and PLC-5/250.

Function Code #4 - Unprotected Bit Write (Basic Command Set)

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. The address
defined represents a register address and not a bit
address. This function will update one or more words of
data as defined by the count parameter.

3

Poll Interval

Minimum time in tenths of a second 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

Function Code = 4

Unprotected Bit Write Function

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