Terminal Signal Description
13 NO3 Normally-open contact of the
output 3
14 R0...3 Output common for signals
O0 to O3
15 NO4 Normally-open contact of the
output 4
16 NO5 Normally-open contact of the
output 5
17 NO6 Normally-open contact of the
output 6
18 NO7 Normally-open contact of the
output 7
19 R4...7 Output common for signals
O4 to O7
20 L+ Process voltage +24 VDC
The internal power supply voltage for the module's circuitry is carried out via the I/O bus (pro-
vided by a bus module or a CPU). Thus, the current consumption from 24 VDC power supply at
the terminals L+/UP and M/ZP of the CPU/bus module increases by 5 mA per DX571.
The external power supply connection is carried out via the L+ (+24 VDC) terminal. The nega-
tive pole of the external power supply is realized via the I/O bus. Therefore, the CPU/bus
module and the DX571 must have a common power supply.
WARNING!
Removal/Insertion under power
The devices are not designed for removal or insertion under power. Because of
unforeseeable consequences, it is not allowed to plug or unplug devices with
the power being ON.
Make sure that all voltage sources (supply and process voltage) are switched
off before you
– connect or disconnect any signal or terminal block
– remove, mount or replace a module.
Disconnecting any powered devices while energized in a hazardous location
could result in an electric arc, which could create a flammable ignition resulting
in fire or explosion.
Make sure that power is removed and that the area has been thoroughly
checked to ensure that flammable materials are not present prior to proceeding.
The devices must not be opened when in operation. The same applies to the
network interfaces.
NOTICE!
Risk of damaging the PLC modules!
Overvoltages and short circuits might damage the PLC modules.
– Make sure that all voltage sources (supply and process voltage) are
switched off before you begin with operations at the system.
– Never connect any voltages or signals to reserved terminals (marked with
---). Reserved terminals may carry internal voltages.
The module provides several diagnosis functions (see Diagnosis
Ä
Chapter 1.5.1.1.13.6 “Diag-
nosis” on page 293).
I/O Modules > Digital I/O Modules
2019/04/173ADR010121, 13, en_US288
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