Fig. 9-3: Basic Circuit Of The Differential Inputs (5 V); Fig. 9-5: Basic Circuit Of The 24 V Inputs (Apci-1710-24V) - Addi-Data APCI-1710 Technical Description

APCI-1710

Fig. 9-3: Basic circuit of the differential inputs (5 V)

Alternatively, TTL signals can also be connected to these inputs. Please note
that the other input of the differential receiver is wired on "+UREF", so that
it also can make a difference. So the TTL signal is inverted or not inverted,
according to the wiring, to the function module.
Fig. 9-4: Basic circuit of the differential inputs 5 V;
In version APCI-1710-24 the differential inputs (A to D) are individually
designed for the connection to a 24 V impulse transmitter / signal
transmitter.

Fig. 9-5: Basic circuit of the 24 V inputs (APCI-1710-24V)

Mass-related inputs
Max. 3 mass-related inputs (E, F and G) are available for one function
module. The levels in the standard delivery correspond with the 24 V
standard (IEC1131-2 / type 1).
used as TTL inputs
Functions of the board
49