23
PW20i
HBM
A1269-2.0 en/de/fr
7.4
Digital control input
The control signal must be applied between the input and GND. The input can be
directly actuated by a logic signal (HCMOS), but tolerates voltages up to 24 V.
The input can be assigned to various functions using the IMD software
command.
IMD0
The status of the input has no effect on the measuring process, but
it can be queried with the POR?; command. In this way, any digital
signals (e.g. from limit switches) can be acquired by the control
software without needing to install additional lines and I/O modules.
IMD1
The input acts as a trigger input for trigger functions with an
external trigger (trigger function, e.g. for checkweighers).
IMD2
The input acts as a stop input for the dosing function.
Input
IMD0;
IMD1;
IMD2;
TRG
Query via POR?
External trigger input
Stop dosing (BRK)
Signal form
The trigger function reacted to the rising flank of a switching impulse.
Function
Control input
Quiescent level
Defined high or low level
Triggering event
Low-high transition
With the electrical data the differences between the different entrances are to
be considered:
Property
Control input
Reference potential
GND
Low
level
0 ...1 V
High level
4 ... 24 V
Input resistance
u
10 k
Ω
