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SIMATIC S7-300 I/O Modules

Signal modules are the interface of the SIMATIC
S7-300 to the process. A host of different digital and analog modules provide exactly the inputs/outputs required for each task.
Digital and analog modules differ as regards the number of channels, voltage and current ranges, electrical isolation, diagnostics and alarm functions, etc.
I/O Modules for the SIMATIC S7-300
In all the module ranges named here, SIPLUS components are also available for extended temperature range -25...+60°C and aggressive atmosphere/condensation.

Easy installation
The sensors/actuators are connected through front connectors. When a module is replaced, the connector is simply plugged into the new module of the same type; the wiring is retained. The coding of the front connector avoids mistakes.

Fast connection
Connection with SIMATIC TOP connect is even simpler and faster (not for the onboard I/O of the compact CPUs). Preassembled front connectors with single cores and a complete plug-in modular system comprising a front connector module, connecting cable and terminal block are available.

High packing density
The high number of channels on the modules provides for the space-saving design of the S7-300. Modules are available with 8 to 32 channels (digital) or 2 to 8 channels (analog) per module.

Simple parameterization
The modules are configured and parameterized using STEP 7, and there are no inconvenient switch settings to be made. The data are stored centrally and, following module replacement, they are automatically transferred to the new module so that no setting errors can occur. No software upgrade is required when using new modules. A configuration can be copied as often as required, e.g. for standard machines.
 

Product range

Digital inputs

Description Voltage range Channels
SM 321 DC 24 V 16, 32
SM 321 DC 48-125V 16
SM 321 UC 24/48V 16
SM 321 AC 120/230V 8,16,32

Digital inputs/outputs

Description Voltage range Channels
SM 323 DC 24 V 8 or 16 DI / DO
SM 327 DC 24V 8 DI and 8DX
(parameterized as DI or DO)

Digital outputs

Description Voltage range Current range Channels
SM 322 DC 24V 0.5A 8 ,16
SM 322 DC 24V 2A 8
SM 322 DC 48-125V 1.5A 8
SM 322 AC 120/230V 1A 8 ,16, 32
SM 322 AC 120/230V 2A 8
SM 322 UC (relay) 0.5 - 5A 8 ,16

Analog inputs

Description Measuring range Resolution Channels
SM 331 Voltage up to16 Bit 2, 8
SM 331 Current
(also HART)
up to 16 Bit 2, 8
SM 331 Resistance up to 16 Bit 1, 4, 8
SM 331 Thermocouple elements up to 16 Bit 2, 8
SM 331 Resistance thermometer up to 15 Bit 1, 4, 8

Analog inputs/outputs

Description Measuring range Resolution Channels
SM 334 Voltage up to 13 Bit 2, 4
SM 334 Current 8 Bit 4
SM 334 Resistance 13 Bit 4
SM 334 Resistance thermometer 15 Bit 4
SM 335 Voltage 14 Bit 4
SM 335 Current 14 Bit 4

Analog outputs

Description Measuring range Resolution Kanalzahl
SM 332 Voltage up to 16 Bit 2, 4, 8
SM 332 Current
(also HART)
up to 16 Bit 2, 4, 8
Additional information:
PDF Download Brochure excerpt "Technical data S7-300 I/O Modules"
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