Fusion Series controllers support up to two ports of 8-bit digital input/output, allowing users to read and control 5V digital signals using only a few simple commands. When used for digital input applications, Fusion controllers are capable of reading inputs such as switches, magnet sensors, and other contact closure devices. Digital output makes it easy to control LEDs and some logic circuits at very high speed.
Port Direction
The first step in using the Digital I/O features of Fusion series controllers is a complete understanding of port direction. Each 8-bit port may be configure to read inputs, write outputs, or both in combination. When the port is set to all inputs, 8 switches can be read as long as the input does not exceed 0 to 5 Volts DC. When the port is set to all outputs, 8 LEDs can be controlled by software, allowing you to turn each LED on or off in any combination. It’s easy to mix inputs and outputs, allowing users to read 4 switches and control 4 LEDs. Each I/O line on the Fusion controller may be configured to input or output, but you must set the status of all 8 I/O lines at one time using a single command. Here’s an example:
236 2 255 Set I/O Lines 1 to 8 to Input Rx: 255
236 2 0 Set I/O Lines 1 to 8 to Output Rx: 0
236 2 15 Set I/O Lines 1-4 to Input, 5-8 to Output Rx: 15
The third byte in the Port Direction command is used to set the Digital Input or Output state of all 8 data lines on the I/O port. Here’s how you decide what this value should be:
Each I/O bit has a value associated, as shown below:
IO 8 IO 7 IO 6 IO 5 IO 4 IO 3 IO 2 IO 1
Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0
128 64 32 16 8 4 2 1
Each of these 8 bits may be On or Off:
1 = On = Input
0 = Off = Output
If we turn on every other bit, we get this:
IO 8 IO 7 IO 6 IO 5 IO 4 IO 3 IO 2 IO 1
Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0
In Out In Out In Out In Out
1 0 1 0 1 0 1 0
128 0 32 0 8 0 2 0
Bits 8, 6, 4, and 2 will be turned On, setting them to Input, the other bits will remain off, setting them to output.
Now we add the bits together:
128 + 32 + 8 + 2 = 170
Now we send the command:
236 2 170 Sets I/O Line 0 to Output
Sets I/O Line 1 to Input
Sets I/O Line 2 to Output
Sets I/O Line 3 to Input
Sets I/O Line 4 to Output
Sets I/O Line 5 to Input
Sets I/O Line 6 to Output
Sets I/O Line 7 to Input
Controller responds with: Rx: 170
In the screen shot above, the 8-Bit I/O Port was configured for input and output. I/O Lines 1, 3, 5, 7 are Outputs while I/O Lines 2, 4, 6, 8 are set to Inputs. The value 85 was written to the port, turning on I/O Lines 1, 3, 5, and 7 (these lines can be used to drive LEDs). Inputs 2, 4, 6, and 8 can be used to read switches, and will light RED if the input is high and you click the “Read from Port” button.
Port 1 Commands
Value can be any number from 0 to 255, and follows the 8-Bit binary standard.
236 0 Write Output values to output bits of I/O port Rx: [Output Value]
236 1 Read Input value from input bits of I/O Port Rx: [Input Value]
236 2 Set Port Direction Command Rx: [Direction Value]
Port 2 Commands
Value can be any number from 0 to 255, and follows the 8-Bit binary standard.
236 0 [Value] 2 Write Output values to output bits of I/O port Rx: [Output Value]
236 1 2 Read Input value from input bits of I/O Port Rx: [Input Value]
236 2 [Value] 2 Set Port Direction Command Rx: [Direction Value]
EEPROM Memory
EEPROM Memory stores the state of each port when power is first applied to the controller.
Please review the Fusion EEPROM Quick Start Guide for complete details.
EEPROM Memory Locations
280 Stores the Direction of Port 1
281 Stores the On/Off Status of Each Bit of Port 1
282 Stores the Direction of Port 2
283 Stores the On/Off Status of Each Bit of Port 2
-
AD8 8-Channel Analog to Digital Converter Quick Start Guide
AD8 Introduction Many NCD controllers include AD8 features, AD8 is a standardized grouping of 8 analog inputs, used for reading sensors and switches. NCD controllers with AD8 features include many ProXR controllers, all ProXR Lite controllers, and all Fusion series controllers. All controllers with AD8 capabilities will allow you to use the same command set shown in this guide, allowing your controller to read any sensor with a 0-5VDC analog ...
-
Fusion Essentials Quick Start Guide
Introduction The Fusion® Series is our fourth generation relay controller offering the ultimate relay control solution . . . without exception. Fusion controllers are the most powerful relay controllers we have ever manufactured. While the learning curve is modest, there are key elements that must be discussed as a foundation to any Fusion series controller. This guide should be considered a starting point for understanding and using the Fus...
-
NCD Component Library Quick Start Guide
Introduction The NCD Component Library makes it easy to integrate ProXR controllers into Microsoft Visual Studio. The NCD Component Library is a complete command set that eliminates most of the detailed programming, allowing you to take control of ProXR controllers using high-level functions. With the NCD Component Library, you will receive over 40 samples from A/D Conversion to Duration and Pulse Timing and best of all, it’s FREE!! We ...
-
AD1216 Analog to Digital Converter Quick Start Guide
AD1216 Analog to Digital Conversion Command Set WARNING: A/D Inputs can accept a voltage from 0 to 5VDC. You should NEVER exceed this voltage range. Negative voltages will damage the A/D inputs. Power the controller BEFORE applying voltages to these inputs. Applying voltages to these inputs while the controller is powered down may result in permanent damage to the CPU. USB ProXR Control with Analog to Digital Conversion 16-Channel USB 16-Channel ...
-
I2C Communications Quick Start Guide
Introduction I2C communications is a integral part of communicating to sensors and peripheral devices. Learning to implement I2C Communications in combination with NCD devices allows users to expand their relay controllers into sensor monitoring and control applications. One of the greatest benefits of I2C communications is the simple protocol for talking to external devices. Since many manufacturers generate sensors and chips that suppor...
-
Getting Started With ncd.io IoT Wireless Sensors
Getting Started With ncd.io IoT Wireless Sensors Industrial IoT Wireless Sensor Supported by ncd Hardware needed to build an IoT Solution Sotware needed to build an IoT Solution Pushing Wireless IoT Sensor Data to the Cloud Decoding ioT Wireless Sensor Data Configuring The Wireless IoT Sensor How to put a sensor into config mode Wireless Communication Frequency and Mesh Protocol Why 900Mhz Getting Started With ncd.io IoT Wireless Sensors ncd.io o...
-
Fusion Master Control Panel Quick Start Guide
Fusion Master Control Panel Fusion Series controllers have some very important commands that warranted their own control panel. The Fusion Master Control Panel is used to control the performance of the Fusion CPU as well as control the three most important background tasks. The Fusion Master Control Panel also allows you to download and upload device settings to the controller. This is very useful for customers who need to backup certain fe...
-
API Codec Quick Start Guide
What is the API Codec? If you are working with TCP/IP or Wireless communications, you might want to consider using the API Codec to handle all communication functions. The API Codec will “wrap” standard commands with a Header, Byte Counter, and a Checksum, which eliminates the need for timeout command processing (the standard method of communications which stalls processing of commands). he API Codec is a faster, more reliable method of com...
