YingZhou Industrial Automation | Product Information
Siemens 6ES7221-1BH32-0XB0 SIMATIC S7-1200 Digital Input Module
SM 1221 | 16 Digital Inputs | 24V DC | Sink/Source
Product Overview
The Siemens 6ES7221-1BH32-0XB0
is a SIMATIC S7-1200 SM 1221 digital
input signal module designed to expand
the digital input capacity of compatible
SIMATIC S7-1200 PLC systems.
This module provides
16 digital input channels
for 24V DC input signals,
supporting Sink/Source
input configurations.
The sixteen inputs are organized into
four groups of four channels.
Siemens specifies IEC 61131 Type 1 input
characteristics, with a nominal input
current of approximately 4mA
per channel.
The logic 1 input signal threshold is
a minimum of 15V DC at 2.5mA,
while the logic 0 input threshold is
a maximum of 5V DC at 1mA.
The module uses a rated
24V DC supply voltage
with a permissible DC supply range
of 20.4–28.8V.
Its 5V DC backplane bus current
consumption is specified at a maximum
of 130mA, with typical
module power dissipation of
2.5W.
Input filter settings are selectable
from 0.2ms to 12.8ms,
allowing the configuration of input
response behavior according to
the control system requirements.
The module supports a maximum of
500m shielded cable
or 300m unshielded cable
under the manufacturer's specified
wiring conditions.
With compact dimensions of
45 x 100 x 75mm,
the module is suitable for expanding
compatible S7-1200 installations
where additional discrete input
signals are required.
The SM 1221 16DI version should be
distinguished from 8DI input modules,
SM 1222 output modules, and
SM 1223 combined input/output modules.
Buyers should verify the exact
catalog number, controller
compatibility, input configuration,
supply voltage, and wiring
requirements before ordering.
The supplied actual packaging
photographs show the exact model
6ES7221-1BH32-0XB0,
the SIMATIC S7-1200
product family, and the
SM1221 DI 16 x 24V DC
configuration.
The photographed packaging also
identifies functional status
FS:06, firmware
V02.00.02, and
Made in China.
The physical module nameplate
should be confirmed before dispatch.
Key Product Features
-
SIMATIC S7-1200 SM 1221 — Siemens digital input signal module for compatible S7-1200 PLC systems.
-
16 Digital Inputs — Provides sixteen 24V DC digital input channels.
-
Sink/Source Configuration — Supports compatible sink and source digital input wiring.
-
Four Input Groups — Sixteen channels organized into four groups of four.
-
24V DC Rated Supply — Rated for industrial 24V DC control systems.
-
IEC 61131 Type 1 Inputs — Manufacturer-specified digital input characteristics.
-
Configurable Input Filter — Selectable input filtering from 0.2ms to 12.8ms.
-
Compact 45mm Width — Signal module designed for compatible S7-1200 expansion configurations.
-
Actual Packaging Photographs — Supplied packaging matches the exact Siemens catalog number.
-
In Stock — Availability according to supplied inventory information.
Actual Product Verification
✓ Actual Siemens packaging photographs supplied
✓ Packaging catalog number: 6ES7221-1BH32-0XB0
✓ Product family: SIMATIC S7-1200
✓ Module designation: SM1221
✓ Product type: Digital Input Module
✓ Input configuration: DI 16 x 24V DC
✓ Firmware marking: V02.00.02
✓ Functional status: FS:06
✓ Packaging date: 04.2024
✓ Quantity marking: 1
✓ Country of origin marking: Made in China
✓ Packaging model matches requested catalog number
✓ Physical module nameplate confirmation required before dispatch
In Stock & Available to Order
Siemens 6ES7221-1BH32-0XB0
is marked in stock
based on supplied inventory information.
This SIMATIC S7-1200
SM 1221 digital input module
provides 16 digital inputs
supporting 24V DC Sink/Source
signal configurations.
It is suitable for exact-model
industrial procurement and
compatible S7-1200 PLC expansion.
Actual Siemens packaging photographs
are available for model verification.
Before ordering, please confirm
controller compatibility, the exact
module catalog number, required
input voltage, wiring configuration,
available quantity and delivery
arrangements.
YINGZHOU supports single-unit orders,
industrial maintenance procurement,
bulk purchases and mixed-brand
automation sourcing.
Stock availability is subject
to confirmation at the time
of order placement.
IN STOCK
Siemens 6ES7221-1BH32-0XB0
Contact us for exact-model confirmation,
available quantities and bulk pricing.
Please verify the SIMATIC S7-1200
SM 1221 16DI configuration, 24V DC
supply and Sink/Source input requirements
before ordering.
Request Bulk Pricing
