1. Electrical Specification
Analog I/O
- Quantity 2, 24 bit precision analog inputs, inputs are able to sample a 4-20 mA current or voltage from 0-5 Volts, based upon selectable configuaration register which are stored in flash memory.
- 1 analog output for control, 14 bits precision, current or voltage configurable, able to output either a 4-20mA current or a volatage of 0-5 volts.
Digital I/O
- 4 digital inputs or outputs
- When Configured as Inputs
- Able to sample either digial high or low
- Able to calculate the frequency of square wave
- Able to trigger on a change from low to high or high to low.
- When Configured as Outputs
- 0 to 0.7 considered low
- 2.7 to 3.3 Volts considered high.
Communications
- 10BaseT/100BaseT Ethernet
- Configurable as static or dynamic addressing
- Configurable port for data access
- RS232
- Configurable data transfer rate from 2400 baud to 119,200.
- RS485 communications
- Configurable data transfer rate from 2400 baud to 119,200.
Input Power
- 9 to 24 volts
Data Aquisition Support
- Real-time clock for data synchronization
- 128 Mbytes Onboard FLASH data storage
2. Configuration
The software of the control system will have three types of registers that allow configuration of the application, in such a way that a single devices can be set up to run multiple functionalities, thereby reducing the number of spares required. The Three Types of Configuration registers are:
System Configuration Registers
Configures communications, analog input and output, and digital input and output. For more information, please refer to the detailed System Configuration Registers section.
Peripheral Configuration Registers
Configures the peripheral ID, sampling rate, and input or output type to use for data acquisition or device control. For more information, please refer to the detailed Peripheral Configuration Registers section.
Peripheral Information Registers
Configures the properties of a connected peripheral. For more information, please refer to the detailed Peripheral Information Registers section.
3. Physical Interface Description
The command and Control system will utilize quarter-turn bayonet style connectors that allow the replacement of a module by untrained personnel.
Connectors
Pin Configuration for Communications and Power Connector
Pin | Function | Description |
A | Tx+ | Network Communication Pin |
B | Tx- | Network Communication Pin |
C | Rx+ | Network Communication Pin |
D | Rx- | Network Communication Pin |
E | V input | Input Power (7-36 Volts) |
F | GND | System Ground |
H | RS-232 Tx | RS232 Communication |
J | RS-232 Rx | RS232 Communication |
K | NC | No Connection |
L | GND | System Ground |
M | RS-485 Tx+ | RS485 Communication |
N | RS-485 Tx- | RS485 Communication |
P | RS-485 Rx+ | RS485 Communication |
R | RS-485 Rx- | RS485 Communication |
Pin Configuration for Data Acquisition and Control Connector
Pin | Function | Description |
A | Analog In Channel 1+ (Voltage) | Positive voltage input of first Analog to Digital Converter |
B | Negative Analog Out | Negative Voltage Output or 4-20mA Current Loop Return |
C | Positive Analog Out | Positive Voltage Output or 4-20mA Current Loop Return |
D | GND | Digital Ground/System Ground |
E | Analog In Channel 1+ (Current In) | 4-20 mA Current Loop Measurement, Positive Input for Second Analog to Digital Converter |
F | Analog In Channel 0+(Current In) | 4-20 mA Current Loop Measurement, Positive Input for First Analog to Digital Converter |
G | Analog In Channel 1-(Current Return) | Digital Ground/System Ground |
H | +3.3V | +3.3 Volts generated within the SingleNode |
J | Analog In Channel 0-(Current Return) | Input Power to SingleNode or Output Power for Powering Sensors |
K | Analog in Channel 1- (Voltage) | Voltage and Current Return for the first Analog to Digital Converter |
L | Analog In Channel 2+ (Voltage) | Positive voltage input of Second Analog to Digital Converter |
M | Analog in Channel 2- (Voltage) | Voltage and Current Return for the Second Analog to Digital Converter |
N | No Connection | No Connection |
P | No Connection | No Connection |
R | Digital IO #2 | Digital Input or Output Depending on Configuration Register |
S | Digital IO #3 | Digital Input or Output Depending on Configuration Register |
T | Digital IO #4 | Digital Input or Output Depending on Configuration Register |
U | No Connection | No Connection |
V | Digital IO #1 | Digital Input or Output Depending on Configuration Register |