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Control block utilization, Cte display implementation, Write cte (config extension table) mstr operation – Schneider Optics Web Embedded Server User Manual

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The MSTR Instruction

840 USE 115 00 Version 1.0

39

3.2.12

Write CTE (Config Extension Table) MSTR Operation

The Write CTE operation (type 12 in the displayed register of the top node) reads
an indicated number of bytes from PLC memory, starting at a specified byte
address, to an indicated Ethernet configuration extension table at a specified offset.
The content of the Ethernet CTE table is displayed in the middle node of the MSTR
block.

Control Block
Utilization

The registers in the MSTR control block (the top node) contain the Write CTE
information as described in the following table:

CTE Display
Implementation

The values in the Ethernet configuration extension table (CTE) are displayed in a
series of registers in the middle node of the MSTR instruction when a Write CTE
operation is implemented. The middle node contains the first of 11 contiguous 4x
registers. The registers display the following CTE data:

Register

Function

Content

Displayed

Operation Type

12

First implied

Error status

Displays a hex value indicating an MSTR error,
when relevant.

Second implied

Not applicable

Third implied

Not applicable

Fourth implied

Low byte

Quantum backplane slot address of the NOE
module.

Fifth ... Eight
implied

Not applicable

Parameter

Register

Content

Frame type

Displayed

1 = 802.3

2 = Ethernet

IP Address

First implied

First byte of the IP address

Second implied

Second byte of the IP address

Third implied

Third byte of the IP address

Fourth implied

Fourth byte of the IP address

Subnetwork mask

Fifth implied

Hi word

Sixth implied

Low word

Gateway

Seventh implied

First byte of the gateway

Eighth implied

Second byte of the gateway

Ninth implied

Third byte of the gateway

Tenth implied

Fourth byte of the gateway