Digital I/O module Siemens model 6ES72230BD300XB0

Technical specifications

Product type designation

SB 1223, DI 2x24 V DC/DQ 2x24 V DC

permissible range, lower limit (DC)

20.4 V

permissible range, upper limit (DC)

28.8 V

Number of digital inputs

2; Current-sinking

Rated value (DC)

24 V

Number of digital outputs

2; MOSFET, solid-state (current-sinking/current-sourcing)

for signal "1" permissible range, max.

0.5 A

Fall height, max.

0.3 m; five times, in product package

Width

38 mm

Height

62 mm

Depth

21 mm

from backplane bus 5 V DC, typ.

50 mA

Supply current, max.

4 mA; per channel

Power loss, typ.

1 W

in groups of

1

Input characteristic curve in accordance with IEC 61131, type 1

Yes

up to 40 °C, max.

2

for signal "0"

0 to 5 V

for signal "1"

+15 to +30 V

for signal "0", max. (permissible quiescent current)

1 mA

for signal "1", typ.

7 mA

parameterizable

Yes; 0.2 ms, 0.4 ms, 0.8 ms, 1.6 ms, 3.2 ms, 6.4 ms and 12.8 ms, selectable in groups of four

at "0" to "1", max.

2 µs

at "1" to "0", max.

10 µs

shielded, max.

50 m

Short-circuit protection

No

with resistive load, max.

0.5 A

on lamp load, max.

5 W

upper limit

0.6 Ω

for signal "0", max.

0.1 V; with 10 kOhm load

for signal "1", min.

20 V

for signal "1" rated value

0.5 A

for signal "0" residual current, max.

10 µA

Alarms

Yes

Diagnostics function

Yes

for status of the inputs

Yes

Documents / datasheets

Source reviewed: 2026-10-24

Description

Digital I/O module Siemens part number 6ES72230BD300XB0; permissible range, lower limit (DC): 20.4 V; permissible range, upper limit (DC): 28.8 V; Number of digital inputs: 2; Current-sinking. Technical specifications, condition and supply feasibility are checked before ordering.