RoboteQ AX2550/2850 user manual Optical Encoder Commands, Commands Acknowledge and Error Messages

Optical Encoder Commands

Notes:

All parameters and values are expressed with 2 hexadecimal digits

No changes will be made and an error will be reported (“-” character) when attempting to read or write a parameter that does not exist or when attempting to store a parameter with an invalid value.

Apply Parameter Changes

Description:

Many parameters will take effect only after the controller is reset. This command can be used (instead of resetting the controller) to cause these parameters to take effect immedi- ately.

Syntax:^FF

Reply:+ Success, changed parameters are now active

-if error

Reset Controller

Description:

This command allows the controller to be reset in the same manner as if the reset button was pressed. This command should be used in exceptional conditions only or after chang- ing the controller’s parameters in Flash memory so that they can take effect.

Syntax:%rrrrrr

Reply: None. Controller will reset and display prompt message

Optical Encoder Commands

The Optical Encoder included inside the AX2850 responds to its own command set described at “RS232 Encoder Command Set” on page 142.

Commands Acknowledge and Error Messages

The AX2500/2850 will output characters in various situations to report acknowledgements or error conditions as listed below.

Character Echo

At the most fundamental level, the AX2500/2850 will echo back to the PC or Microcontrol- ler every valid character it has received. If no echo is received, one of the following is occurring:

•the controller is not in the RS232 mode

•the controller is Off

•the controller may be defective

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