Siemens EF 83H Series Instrukcja Użytkownika Pobierz pdf (Strona 133)

Configuration Examples

6-26

SIMATIC 505 PROFIBUS-FMS CP User Manual

Example of a Send-Receive Job (continued)

Figure 6-18

shows the sequence of events for a successful FDL transaction.

WY5.3

t0 t2

WX1.3

t1 t3

SEND

RECEIVE

WX3.3

WY7.3

Figure 6-18

Successful T

iming Example

The list below explains the sequence of events.

Send Job RLL requests that data transfer be invoked.

Send Job Active bit is set by the FMS CP

. Data transfer begins.

Send Job Start Bit is reset to inactive by Send job RLL in response to

Job Active bit going high.

Send job completes the data transfer. Send job resets Job Active bit.

Send job is complete.

Receive job RLL requests that received data be processed and stored.

Receive Job Active bit is set by the FMS CP module. FMS CP begins

storage of received data.

Receive Job Start Bit is reset to inactive by Receive job RLL in response

to Job Active bit going high.

Receive job has stored received data in programmable logic controller

memory

. Receive job resets Job Active bit. Receive job is complete and

stores job status of 0 (successful transaction).

Send job re-enables the data transfer for another data transfer if

required.

Successful T

iming

Example

1 2 ... 128 129 130 131 132 133 134 135 136 137 138 ... 186 187

Brak uwag

Siemens EF 83H Series Instrukcja Użytkownika Strona 133