Siemens FM 450-1 - Page 58

Which settings are available?
You can adapt the FM 450-1 to your count job by means of the following 󹪝ve settings:
Table 8-2 The FM 450-1 settings
Name Description
Count range You select the count limit with the count range.
Behavior of digital outputs Q0
and Q1
You can choose between six possibilities for the behavior of the outputs
on reaching the comparison value.
Pulse duration Pulse duration indicates the time for which the output is to be set.
Triggering hardware interrupts When the various selectable events occur, the FM 450-1 can trigger a
hardware interrupt.
Encoders You must specify di󹪜erent settings for the encoder used. These are
described in section "Encoder signals and their evaluation (Page 79)".
Which commands are available?
You can in󹪞uence the counting process of the FM 450-1 by means of the following
commands:
Table 8-3 The FM 450-1 commands
Name Description
Open and close gate The counting process starts when a gate opens and ends when it closes.
Set counter The counter can be set to the load value using various signals.
Basic parameter assignment
When con󹪝guring the hardware you de󹪝ne the basic parameter assignment of each FM 450-1.
The following table shows the signi󹪝cance of the relevant parameters.
Table 8-4 Parameters for the basic parameter assignments
Name Option Description
Interrupt selection None You enable the corresponding interrupts via this
selection.
Diagnostics
Process
Process and diagnostics
Reaction to a CPU
STOP
STOP Outputs immediately disabled
counting process aborted
Continue operating The module continues operating.
Terminate active job The single count process continues until it termi‐
nates itself or, in modes with a HW gate, until it is
terminated by closing the HW gate.
The periodic counting process is reparameterized
into a single counting process and is terminated as
such.
Modes, settings, parameters and commands
8.2 Overview of modes, settings and commands
Counter module FM 450-1
58 Equipment Manual, 03/2022, A5E03648739-AC