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Device specifications
I/O modules > Digital I/O modules
Table 74: Assignment of the other terminals:
Terminals
1.0 to 1.7
1.8 to 4.8
1.9 to 4.9
2.0
3.0
4.0
2.1
3.1
4.1
:
2.7
3.7
4.7
The internal power supply voltage for the module's circuitry is carried out via the I/O bus
(provided by a communication interface module or a CPU). Thus, the current consumption from
24 V DC power supply at the terminals L+/UP and M/ZP of the CPU/communication interface
module increases by 2 mA per DX522.
The external power supply connection is carried out via the UP (+24 V DC) and the ZP (0 V DC)
terminals.
330
Signal
I0 to I7
UP
ZP
R0
NO 0
NC 0
R1
NO 1
NC 1
:
R7
NO 7
NC 7
3ADR010278, 3, en_US
Description
Input signals of the 8 digital
inputs
Process supply voltage +24 V
DC
Reference potential for the 8
digital inputs and the process
supply voltage
Common contact of the first
relay output
Normally-open contact of the
first relay output
Normally-closed contact of the
first relay output
Common contact of the
second relay output
Normally-open contact of the
second relay output
Normally-closed contact of the
second relay output
:
Common contact of the eighth
relay output
Normally-open contact of the
eighth relay output
Normally-closed contact of the
eighth relay output
2022/01/31
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