ProSoft Technology ProLinx S3964R User Manual download pdf (Page 36)

MVI69-S3964R ♦ CompactLogix or MicroLogix Platform Ladder Logic

Siemens 3964R Protocol

Page 36 of 80 ProSoft Technology, Inc.

October 31, 2008

3.2.5 User Data Objects

These objects hold data to be transferred between the processor and the MVI69-

S3964R module. The user data is the read and write data transferred between

the processor and the module as "pages" of data up to 200 words long.

The read data (ReadData) is an array set to match the value entered in the Read

should be dimensioned as an even increment of 240 words. This data is paged

up to 200 words at a time from the module to the processor. The ReadData task

places the data received into the proper position in the read data array. Use this

data for status and control in the ladder logic of the processor.

The write data (WriteData) is an array set to match the value entered in the

Write Register Count parameter of the S3964R.CFG file. For ease of use, this

array should be dimensioned as even increments of 60 words. This data is paged

up to 240 words at a time from the processor to the module. The WriteData task

places the write data into the output image for transfer to the module. This data is

passed from the processor to the module for status and control information for

use in other nodes on the network.

3.3 Commands

The CMDS sub-routine is used to handle special block processing. Special

blocks include:

 9998 - Warm Boot

 9999 - Cold Boot

3.3.1 9998 Warm Boot

The SLC processor can request a warm boot operation of the module by placing

a value of 9998 is the M1 register 6800 (Command Control Register).

3.3.2 9999 Cold Boot

The SLC processor can request a cold boot operation by the module by placing a

value of 9999 in the M1 register 6800 (Command Control Register).

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ProSoft Technology ProLinx S3964R User Manual Page 36