HBM PW15iA, Mounting Instructions, Page: 16 / 104

Structure and mode of operation
14
A4359-1.0 HBM: public
PW15iA
3.4 Inputs and outputs
The two I/Os can be used either as inputs or outputs.
You can also set different switching levels (TTL or PLC)
for the inputs. On delivery, both I/Os are set as inputs
with a TTL level. Specify the function of the I/Os as
inputs with commands
IM1 and IM2 , and the function as
outputs with OM1 and OM2 .
Notice
The electronics must be operated with a supply voltage
of between 12 and 30V. Incorrect connections between
the supply and interface cables or the digital inputs/out­
puts can cause irreversible damage.
So you must check the correct assignment of the con­
nections before switching on for the first time.
3.4.1 Trigger function
In Trigger mode (command IMD1 ), the electronics have
four different trigger functions available:
S
Pre-triggering by level
S
Pre-triggering by external (digital) signal
S
Post-triggering by level
S
Post-triggering by external (digital) signal
Gross or net values can be used as input values. The
filter settling time can be optimized by the actual elec­
tronics (command
AST ).