CC-PUIO31 is a general purpose input/output module from Honeywell, which is described in detail below:
summarize
This module is a universal input/output module for Experion’s Process Knowledge System (PKS), which reliably and efficiently connects field equipment to PKS controllers.
Functional characteristics
General input/output function: CC-PUIO31 supports a variety of field devices, such as digital input/output devices, analog input/output devices and temperature sensors, etc., can receive and process input signals from different types of sensors, such as voltage, current, resistance and other signals, and output corresponding control signals according to the configuration to control various actuators.
User configurable channels: Each channel can be independently configured for a variety of functions, including analog input, analog output, digital input, event sequential recording (SOE) digital input, digital output, pulse input (up to four channels), and open circuit detection, providing a high degree of flexibility to meet the needs of different industrial application scenarios.
Electronic short circuit protection:CC-PUIO31has electronic short circuit protection to prevent equipment damage due to short circuit, ensuring the safety and stability of the module under various electrical conditions.
Fast scanning: The priority input and output module scanning function can ensure fast data processing, timely response to the status changes of the field equipment, and help to improve the real-time and response speed of the entire control system.

Security state behavior configuration: For digital and analog output channels, the security state (fault option) behavior can be configured according to the channel. When there is a fault or abnormal situation, the module can switch according to the preset security state to ensure the security and stability of the system.
HART Support: The HART 7 protocol is supported for analog inputs, and each channel is equipped with a HART modem for fast performance and communication with HART compatible devices for easy interaction and data transfer with other smart devices that comply with the HART protocol.
Wide temperature range: CC-PUIO31 modules can operate in the extended temperature range from -40 °C to + 70°C, adapting to a variety of harsh industrial environmental conditions, ensuring stable operation in different temperature environments.

Technical specification
Analog input: Input type is current (2, 3, or 4-wire devices), up to 32 input channels per module (with or without open detection), A/D converter resolution is 16 bits, and input range is 0-20mA or 4-20mA.
Pulse input: Any 4 channels can be used as pulse input, the frequency range is 0-15kHz, and the minimum pulse width is 25μs.
Analog output (with HART) : Output type 4-20mA, up to 32 output channels per module, resolution 12-bit.
Digital input (with open detection) : open detection voltage is 26Vdc Max, closed contact current is 7mA (Max), closed contact detection range is 3.1mA < I < 7mA, open contact detection range is 0.9mA < I < 2.0mA.
Digital input (no open circuit detection) : open circuit detection voltage is 26Vdc Max., closed contact current is 7mA Max., closed contact detection condition is I > 3.2mA, open contact detection condition is I < 2.0mA.
Digital output: up to 32 output channels per module, the output type is solid state source, with short circuit protection, load current is less than 0.1mA when off, minimum 1mA to maximum 0.5A per channel when on.
Physical characteristics
Size: Approx. 172mm x 102mm x 41mm (6.77in x 4.02in x 1.61in)
Weight: About 0.5kg (1.1lb)