Ee memory functions – Rockwell Automation 1203 Serial Communications Module Series B User Manual

Page 61

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5–13

Block Transfer Emulation Instructions

1203–5.5 September 1995

The EE Memory Functions message activates the specified EE
functions.

PLC Block Transfer Emulation Instruction Data

PLC request instruction length: 4 words
Drive response instruction length: 3 words

Header

Word 1

PLC Decimal Value

–31998

Message Structure

Header

Word 2

Header

Word 3

PLC Request

Header Word 1

Header Word 2

Header Word 3

Message Length

Message Length

PLC Decimal Value

770 –– Message OK

–31998 –– Message Error

0

Drive Response

4

0

Header Word 4

EE Command

Value

EE Command

00
01
02
03

Not Used
EE Save
EE Recall
EE Default Initialize

3

Message Operation

The EE memory function allows three different message requests:

EE Save saves parameter information from the working memory
or RAM to EEPROM.

EE Recall retrieves the last saved data from EEPROM and places
it in the working memory or RAM.

EE Default Initialize clears the RAM and EEPROM and sets all
parameter values to default.

If an error has occurred, word 2 of the response returns a value of
–31998.

EE Memory Functions

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