Technical Specifications
For SM231 8AI×16bits Analog input module, readings are saved in VW instead of AIW, the
specific address depends on module location, calculated as following:
x(VWx) = Slot no. × 64 + Input channel no.× 2
Slot number corresponding with installation location, and the slot 0 is the first expansion module
nearest to CPU, then the second is slot 1, and so on. There are all 8 Input channels from A to H
and numbered as 0 to 7.
The address look-up table based on equation above shows as below:
Table 4-5-17 SM231-7NF quick reference
As COTRUST TD2X and SIEMENS TD200 have address fixed at VW0, if you need to
use TD2X/TD200 and SM231 8AI Module simultaneously, the SM231 8AI module
cannot be installed at Slot 0, or else it cannot operate.
4.6 PID Module Specifications
Table 4-6-1 PID modules order No.
SM231 thermocouple PID module, 4 J/K types, with intelligent PID,
isolated 16 bits precision
SM231 thermocouple PID module, 8 J/K types, with intelligent PID,
isolated 16 bits precision
SM231, 8 current inputs, 0-20mA/4-20mA, with intelligent PID,
isolated 16 bits precision
【Main features】
Isolation between Bus, Power and all channels, with high reliability and interference
immunity.
16 bits sampling accuracy, with hardware filter technology to obtain more accurate and
stable measuring values.
Power supply equip with anti-protection and Surge absorption, suited for harsh industrial
environment.
Integrated advanced fuzzy logic control algorithm, accurately control temperature without
program and well motion performance.
PID output, which can be PWM or Analog-Bipolar output, support both heating and cooling
control.
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