SIMOLINK drive coupling
Function Blocks - FM 458-1 DP 5-9
Edition 12.2004
5.2 SLAV, SLAVE_R SIMOLINK receive block for one actual
value
SLAV
Hardware address SLB
GV TAD YA0 DI
Actual value from slave 0
Address of the first slave
I FSL YA1 DI
Actual value from slave 1
Number of slaves
I NSL YA2 DI
Actual value from slave 2
Channel number for the actual value
I CSV YA3 DI
Actual value from slave 3
Enable cross-data transfer
BO QV YA4 DI
Actual value from slave 4
YA5 DI
Actual value from slave 5
YA6 DI
Actual value from slave 6
YA7 DI
Actual value from slave 7
SEQ I
Sequence number
YF I
Block error status
QF BO
Group error bit
A max. of 8 actual values can be transferred from max. 8 slaves using
the SLAV receive block. Each slave can only receive one actual value,
and for all of the slaves, only the same channel number is addressed.
The SLAVE and SLAVE_R function blocks are functionally identical. The
only difference is the data type of the actual value connections YA0 to
YA7:
SLAVE: DINT
SLAVE_R: REAL
1. The SLAV function block executes the following steps while the
system is being initialized
− Checks the task assignment,
− Initializes the task list of the SLB module corresponding to the data
configured at the inputs
2. In the normal system mode ("RUN“ operating status), the SLAV
function block executes the following steps:
− Checks that the inputs are within the permissible value range
− Reads-out the actual values to be received from the receive buffer
of the SLB module#
Symbol
Brief description
Mode of operation
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