Eaton easyE4 series, Руководство пользователя

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6. Function blocks
6.1 Manufacturer function blocks
6.1.6.2 PT - Put values to NET
General
easyE4 base devices provide 32 function blocks PT01…PT32
(PUT).
The list of operands and function blocks will only include this
function block if the project view features a NET consisting of
at least two devices.
These function blocks can be used to pass an operand, which
must not be longer than 32 bits, to the NET. The operand value
is transferred and automatically read by the corresponding
GET function block GT of another NET station.
Operating principle
The operand being transmitted needs to be connected to function block input I1. To do
this, you can use the output from another function block, e.g., an arithmetic function
block. Using a marker double word such as MD1 will make it possible to sim-
ultaneously transmit 32 marker bits, M01 through M32.
To transmit marker bits M01 through M96, you would need three PUT function blocks in
order to transmit marker double words MD1, MD2, and MD3
You can trigger the transmission with a rising edge at function block input T_. In order
for the function block to do another transmission, it would then need to detect another
rising edge.
As an alternative, you can have the device do transmissions that depend on the cycle
time, i.e., by specifying the number of cycles after which the transmission should occur.
This makes it possible to optimize net loads and to transmit values that are not subject
to change as frequently less often.
These options are selected in the parameters for the function block.
The SC function block only functions if the NET is running properly.
The function block and its parameters
Function block inputs
Description Note
(Bit)
EN 1: Activates the function block.
T_ Trigger coil
When there is a rising edge, the function block will tem-
porarily save the input value at I1 and pass it to the NET.
(DWord)
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easyE4 11/18 MN050009 EN www.eaton.com