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. |
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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 |
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