SONG HEUNG SHIK

Manager, SVC

Company Type

Business Consulting

Department

Consulting

Language

English

Influencer Of

Recent Comments

Aug 30, 2023
Replying to SONG HEUNG SHIK

Hi,
I am inquiring about the description of "Control Point" in Chapter 15.
The term "control point" used on page 396 and the term "control point" defined on page 399 appear to have different meanings.

Chapter15, Page 396

Control Interfaces                 
A control interface is a graphical or mechanical interface system that communicates with a controller to initiate command sequences. Let us consider a situation where a user would like to turn on a “Room in Use” sign outside the room by pressing a button on a touch panel. 
The “button pressed” message from the touch panel is sent to the CPU, which interprets the message as a command to turn on the sign. It then sends out the appropriate signal across a wire/cable/network to the designated control point. At the control point, the appropriate relay is closed to power the sign on. 
The control system could also be programmed to switch the sign off with a second press of the same 
touch panel button and/or to vary the appearance of the button (change color or brightness) to indicate that the sign has been activated or deactivated.

Chapter15, Page399

Control Points                
A control point, such as Figure 15-2, is the vehicle that connects devices to the control system CPU. 
For example, a touch panel would be a control interface, and the control point could be Wi-Fi, IR, UWB, RS-232, Bluetooth, or Ethernet. When the user touches a button on the touch panel, the control point communicates that information from the CPU to the device(s).

I believe it makes sense in the overall context to replace the term "control point" as defined on page 399 with the term "control port" as used in Table 15-A  A control function script.

Aug 29, 2023
Replying to SONG HEUNG SHIK

Hi,
I am inquiring about the description of "Control Point" in Chapter 15.
The term "control point" used on page 396 and the term "control point" defined on page 399 appear to have different meanings.

Chapter15, Page 396

Control Interfaces                 
A control interface is a graphical or mechanical interface system that communicates with a controller to initiate command sequences. Let us consider a situation where a user would like to turn on a “Room in Use” sign outside the room by pressing a button on a touch panel. 
The “button pressed” message from the touch panel is sent to the CPU, which interprets the message as a command to turn on the sign. It then sends out the appropriate signal across a wire/cable/network to the designated control point. At the control point, the appropriate relay is closed to power the sign on. 
The control system could also be programmed to switch the sign off with a second press of the same 
touch panel button and/or to vary the appearance of the button (change color or brightness) to indicate that the sign has been activated or deactivated.

Chapter15, Page399

Control Points                
A control point, such as Figure 15-2, is the vehicle that connects devices to the control system CPU. 
For example, a touch panel would be a control interface, and the control point could be Wi-Fi, IR, UWB, RS-232, Bluetooth, or Ethernet. When the user touches a button on the touch panel, the control point communicates that information from the CPU to the device(s).

I think it makes sense to change "control point" to the item "Control Port" in Table 15-A A Control Functions Script.

Aug 29, 2023

b. To test the local device to see if TCP/IP is working on your system

Aug 29, 2023

Hi,
I am inquiring about the description of "Control Point" in Chapter 15.
The term "control point" used on page 396 and the term "control point" defined on page 399 appear to have different meanings.

Chapter15, Page 396

Control Interfaces                 
A control interface is a graphical or mechanical interface system that communicates with a controller to initiate command sequences. Let us consider a situation where a user would like to turn on a “Room in Use” sign outside the room by pressing a button on a touch panel. 
The “button pressed” message from the touch panel is sent to the CPU, which interprets the message as a command to turn on the sign. It then sends out the appropriate signal across a wire/cable/network to the designated control point. At the control point, the appropriate relay is closed to power the sign on. 
The control system could also be programmed to switch the sign off with a second press of the same 
touch panel button and/or to vary the appearance of the button (change color or brightness) to indicate that the sign has been activated or deactivated.

Chapter15, Page399

Control Points                
A control point, such as Figure 15-2, is the vehicle that connects devices to the control system CPU. 
For example, a touch panel would be a control interface, and the control point could be Wi-Fi, IR, UWB, RS-232, Bluetooth, or Ethernet. When the user touches a button on the touch panel, the control point communicates that information from the CPU to the device(s).

Aug 15, 2023

c. Communicate regularly, until a decision is made

Jul 25, 2023

I think  "a. Count the number of ceiling tiles in a drop tile installation"