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ProSoft Technology MVI71-DFNT User Manual

Page 117

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MVI71-DFNT ♦ PLC 5

Reference

EtherNet/IP Client/Server Communication Module

User Manual

ProSoft Technology, Inc.

Page 117 of 175

February 3, 2011

5.11.3 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

Slot Number

Processor slot number in Control/CompactLogix rack.

Use -1 for PLC5 & SLC processors.

8

Function Code = 3

Protected Bit Write Function

9

Word Address

Word address where to start the write operation.

P1

10 to 12

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.

5.11.4 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

Slot Number

Processor slot number in Control/CompactLogix rack.

Use -1 for PLC5 & SLC processors.

8

Function Code = 4

Unprotected Bit Write Function

9

Word Address

Word address where to start the write operation.

P1

10 to 12

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 and PLC-5.