Reading and writing parameters – Rockwell Automation 160 RSI SERIAL COMM MODULE User Manual

Page 36

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8–4

Using the RS1 Module with a Programmable Controller

Figure 8.2
Writing Logic Command and Reading Logic Status

Reading and Writing
Parameters

Reading or writing parameters can be accomplished using message
commands to communicate through the RS1 Module to the drive. The
drive parameters are accessed at location N10:XX, with the XX being
the parameter number to read or write (i.e. N10:30 accesses
parameter P30 - [Accel Time]).

LAD 3 - DF 1 LOGIC --- Total Rungs in File = 5

This rung writes the Logic Command - Data in N7:8 is written to the Drive at N41:0

0000

B3:0

0

Enable for the Logic
command Write

EN

DN

ER

Read/Write Message
Read/Write

Write

Target Device

500CPU

Control Block

N7:0

Control Block Length

7

Setup Screen

MSG

0001

B3:0

0

Enable for the Logic
command Write

N7:0

13

Done Bit - Logic
Command Write

N7:0

12

Error Bit - Logic
Command Write

U

B3:0

0

Enable for the Logic
command Write

L

B3:0

1

Enable for Logic
Command Read

This rung reads the Logic Status from the drive - Data from N41:0 is read and placed in N7:9

0002

B3:0

1

Enable for Logic
Command Read

EN

DN

ER

MSG

Read/Write Message
Read/Write

Read

Target Device

500CPU

Control Block

N7:10

Control Block Length

7

Setup Screen

0003

B3:0

1

Enable for Logic
Command Read

N7:10

13

Done Bit - Logic
Command Read

N7:10

12

Error Bit - Logic
Command Read

U

B3:0

1

Enable for Logic
Command Read

0004

END

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