Rockwell-automation 1402-LSM Line Synchronization Module Installation Instrukcja Użytkownika Pobierz pdf (Strona 45)

Chapter 4

Application Information

4–11

Data Files Used Continued

able 4.5

File Description

N30 Factory Configuration Parameters BTR Destination

N31 User Configuration Parameters BTR Destination

N32 Acknowledge Factory Configuration Parameters BTR Destination

N33 Acknowledge User Configuration Parameters BTR Destination

N34 Synchronizing Bus Error Parameters BTR Destination

N35 Synchronizing Bus Voltage/Current Parameters BTR Destination

N36 Synchronizing Bus Power Parameters BTR Destination

N37 Reference Bus Voltage Parameters BTR Destination

N38 Diagnostic Parameters BTR Destination

N39 Factory Configuration Parameters BTW Source

N40 User Configuration Parameters BTW Source

N41 Control Request BTW Source

R6:0 Sequencer Control–Configuration

R6:1 Sequencer Control–Run

I Discrete Inputs to the PLC–5

O Discrete Outputs from the PLC–5

Accessing BTR Data from PLC Ladder

To access a specific parameter from any of the BTRs, the BTR destination

file must be known as well as the parameter number of the parameter desired.

An illustration of this is an example taken directly from the Block Transfer

Tables document and the example ladder diagram. (See Appendix B & C).

To obtain Synchronizing Bus Frequency in Hz from the Synchronizing Bus

Voltage/Current Parameters BTR, the following words need to be read:

N35:37 and N35:38.

Since the frequency is divided in 10

and 10

-3

formats, the following

operations need to be performed to create a floating point representation of

this number:

(N35:37

/1000)

N35:38 = frequency in floating point

For display purposes on a panel view terminal for example, it may not be

necessary to perform this operation if the data can be divided into two fields

and displayed as follows: N35:38. N35:37.

Ladder Program Description

Continued

1 2 ... 40 41 42 43 44 45 46 47 48 49 50 ... 86 87

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