Analog modules
6.16 Analog IO module SM 334; AI 4/AO 2 x 12 bit; (6ES7334-0KE00-0AB0)
S7-300 Automation System Module data
6-144 Manual, 08/2006, A5E00105505-04
6.16.2 Measuring methods and ranges
Introduction
You can wire the inputs for voltage, resistance or temperature measurements, or disable the
inputs.
You can wire the outputs as voltage outputs, or disable them.
Configure the IO circuits at "measuring method" and "output method" parameters in
STEP 7
.
Input defaults
The "thermoelectric resistance (linear, 4-wire connection)" measuring method and "Pt 100
Klima" measuring range are set by default at the module. You can use those default settings
without having to program the SM 334; AI 4/AO 2 x12 Bit in
STEP 7
.
Options of wiring the input channels
You can wire the input channels of SM 334; AI 4/AO 2 x 12 Bit in the following combinations:
Channel Wiring versions
Channels 0 and 1
• 2 x temperature or
• 2 x resistance
Channels 2 and 3
• 2 x voltage,
• 2 x resistance,
• 2 x temperature,
• 1 x temperature and 1 x voltage, or
• 1 x resistance and 1 x voltage
Note
Wiring both a temperature sensor and a resistor to channels 0 and 1 or 2 and 3 is not
allowed.
Reason: Common current source for both channels.
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