Micromod RetroPAK: SLC Configuration Manual - Manual (Page 289)

Function Code 59- Digital Transfer
GENERAL DESCRIPTION
This function code selects one of two digital inputs, depending on a transfer switch
signal. The state of the transfer switch is determined externally, either by
automatic control or by an operator.
UTILIZATION
The MOD 30ML/MODCELL compound FC59 used here has a function block namely
the Expression block.
Figure 59 .1.
FC59 Compound
The Expression block has two inputs named S1 and S2 that are the selector inputs and
another input S3 that is the transfer switch. The result of the expression is either S1 or S2
depending on the value of S3. The data type of the result is configured as discrete
(Boolean).
INPUTS - OUTPUTS
Signal Type Block Description
S1 Input – S1
Boolean FC59 Connect to the FC59.S1 signal of the
compound.
S2 Input – S2
Boolean FC59 Connect to the FC59.S2 signal of the
compound.
S3 Input – S2
Boolean FC59
Connect to the FC59.S3 signal of the
compound.
0 =
1 =
N Output – R
Boolean FC59 Connect from the FC59.N signal of the
compound.
59 - 1