C, C++:
Lifting Mechanism And Expansion Joint State Structure `rm_expand_state_t`

Class member variable description

Expansion joint angle pos
Unit: °, accuracy: 0.001° (for the height of the lifting mechanism, unit: mm, accuracy: 1 mm, range: 0−2,300).
C++
```
int rm_expand_state_t::pos
```
Drive current current
Unit: mA, accuracy: 1 mA.
C++
```
int rm_expand_state_t::current
```
Drive error code err_flag
Refer to joint error codes for details.
C++
```
int rm_expand_state_t::err_flag
```
Current state mode
0: idle, 1: forward speed motion, 2: forward position motion, 3: backward speed motion, 4: backward position motion.
C++
```
int rm_expand_state_t::mode
```