KL2791 - single-channel speed controller terminal

Control and status bytes

 

Process data mode

 
 

Control byte (for process data mode)

The control byte (CB) is located in the output image, and is transmitted from the controller to the terminal.

 
Bit
CB.7
CB.6
CB.5
CB.4
CB.3
CB.2
CB.1
CB.0
Name
RegAccess
-
-
-
-
-
-
-
 
 

Key

Bit
Name
Description
CB.7
RegAccess
0bin
Register communication off (process data mode)
CB.6 to CB.0
-
0bin
reserved
 
 

Status byte (for process data mode)

The status byte (SB) is located in the input image, and is transmitted from terminal to the controller.

 
Bit
SB.7
SB.6
SB.5
SB.4
SB.3
SB.2
SB.1
SB.0
Name
RegAccess
Error
Temperature warning
Overload
Operation mode
Synchronous
 
 

Key

Bit
Name
Description
SB.7
RegAccess
0bin
Acknowledgment for process data mode
SB.6
Error
1bin
A load-side short circuit was detected
SB.5
Temperature warning
1bin
Overtemperature detected (> 80°C): The process data are limited to 20% (the limitation is automatically reset when the temperatures falls below 60°C)
SB.4
Overload
1bin
Overload detected (e.g. when switching higher loads on)
SB.3 to SB.1
Operation mode
0dec
Full-wave control
 
 
1dec
Mixed control
SB.0
Synchronous
0bin
Terminal is not synchronized with the mains or a short circuit was detected on the load side
1bin
Terminal has synchronized itself with the mains*
 
 

Register communication

 
 

Control byte (for register communication)

The control byte (CB) is located in the output image, and is transmitted from the controller to the terminal.

 
Bit
CB.7
CB.6
CB.5
CB.4
CB.3
CB.2
CB.1
CB.0
Name
RegAccess
R/W
Reg. no.
 
 

Key

Bit
Name
Description
CB.7
RegAccess
1bin
Register communication switched on
CB.6
R/W
0bin
Read access
1bin
Write access
CB.5 to CB.0
Reg. no.
Register number:
Enter the number of the register that you
- want to read with input data word DataIn or
- want to write with output data word DataOUT.
 
 

Status byte (for register communication)

The status byte (SB) is located in the input image, and is transmitted from terminal to the controller.

 
Bit
SB.7
SB.6
SB.5
SB.4
SB.3
SB.2
SB.1
SB.0
Name
RegAccess
R/W
Reg. no.
 
 

Key

Bit
Name
Description
SB.7
RegAccess
1bin
Acknowledgment for register access
SB.6
R
0bin
Read access
SB.5 to SB.0
Reg. no.
Number of the register that was read or written.