beautypg.com

Time stamp, Plc block transfer instruction data, Message operation – Rockwell Automation 1336T PLC Comm. Adapter, Series B, FRN 2.xx-3.xx User Manual

Page 201: Example, Load clock info reference stamp

background image

7–55

Publication 1336 FORCE–5.13 –– September, 1998

The Load Clock Info Reference Stamp message loads the real–time
clock data into the reference stamp.

PLC Block Transfer Instruction Data

BTW instruction length:

3 words

BTR instruction length:

3 words

Header

Word 1

Header

Word 1

Header

Word 2

Header

Word 2

Header

Word 3

0

Message Structure

Header

Word 3

0

PLC Decimal Value

0

PLC Decimal Value

2818 –– Message OK

-29950 –– Message Error

Message Length

3

Message Length

0

PLC Request –– Block Transfer Write

Drive Response –– Block Transfer Read

Message Operation

The Load Clock Info Reference Stamp function specified in the
BTW sends the real–time clock data to the reference stamp. The
reference stamp time then follows the real–time clock data.

Example

In this example, the request to load the real–time clock data into the
reference stamp was sent through the BTW. The BTR responded
with a message of OK.

1

0

N10:10

2

3

4

5

6

7

8

9

N10:90

BTW
Data File

BTR
Data File

Data Format

0

0

3

0

0

2818

Time Stamp

Load Clock Info Reference
Stamp