|
General Information |
|
|---|---|
|
Type |
R/W |
|
Description |
Reads and writes data stored in two 32 bit words in the Endat feedback device. |
|
Units |
N/A |
|
Range |
0 to 4,294,967,295 |
|
Default Value |
0 |
|
Data Type |
Integer |
|
Start Version |
M_01-05-08-000 |
Description
FB1.USERBYTE, FB1.USERWORD, and FB1.USERDWORD share two 32bit words in the Endat feedback device
A process whereby some proportion of the output signal of a system is passed (fed back) to the input.
In automation, a device coupled to each motor to provide indication of the motor's shaft angle, for use in commutating the motor and controlling its speed and position. These three parameters offer different ways to store and access the data stored in these two 32bit words. The table below defines each parameters function. The values are automatically stored non-volatile in the feedback device.
| Parameter | Bits | Attributes |
|---|---|---|
| FB1.USERBYTE0 to FB1.USERBYTE7 | 8 bit | signed or unsigned char |
| FB1.USERWORD0 to FB1.USERWORD3 | 16 bit | signed or unsigned short |
| FB1.USERDWORD0 to FB1.USERDWORD1 | 32 bit | singed or unsigned int |
The parameters overlap each other in the following way:
| BYTE0 | BYTE1 | BYTE2 | BYTE3 | BYTE4 | BYTE5 | BYTE6 | BYT7 |
| WORD0 | WORD1 | WORD2 | WORD3 | ||||
| DWORD0 | DWORD1 | ||||||
For example, if BYTE1 is modified, WORD0 and DWORD0 are modified as well.
Example
-->FB1.USERDWORD1 65536
-->FB1.USERBYTE1
0
-->FB1.USERBYTE2
1
-->FB1.USERBYTE3
0
-->FB1.USERBYTE3 1 (write to the highest byte of FB1.USERDWORD0)
-->FB1.USERDWORD0
16842752
-->FB1.USERWORD0
0
-->FB1.USERWORD1
257
Related Topics
Feedback 1 | FB1.USERBYTE0 to FB1.USERBYTE7 | FB1.USERWORD1 to FB1.USERWORD3
