CANopen DSP 402 Implementation Guide
26
Illegal Transition
After initiation of a drive by either power on or NMT node reset, the drive automatically performs transitions 0 and 1 to the SWITCH ON DISABLED state. The controlword can then be used to cause any of the transitions defined previously. If a transition is illegal (such as requesting a QUICK STOP in a FAULT state), the controlword is rejected with abort code 0609 0030, “Value range of parameter exceeded.” If an RPDO is used to control the drive, an RPDO style emergency is transmitted with the error code. The emergency structure and meaning is illustrated in the SimplIQ CANopen Implementation Manual. This emergency can be masked in accordance with object 2F21h. In case of an illegal transition, bit 7 in the statusword (warning) is set for at least the next transmission of this statusword. The bit is after a legal transition of the controlword.
The resolution for statusword transmission is approximately 3 milliseconds. Events that are modified during this time are sensed and responded to, but no notification of them is made by the statusword.
Object 0x6040: Controlword
The controlword contains bits for:
Controlling the state
Controlling operating modes
Object description:
| Index |
| 6040h |
| Name |
| Controlword |
| Object code |
| VAR |
| Data type |
| UNSIGNED16 |
| Category |
| Mandatory |
Entry description: |
|
| |
|
|
|
|
| Access |
| Read/write |
| PDO mapping |
| Possible |
| Value range |
| UNSIGNED16 |
| Default value |
| No |