54 Version: 1.2.1 MS249E C-863.12 Mercury Controller
6.3 Switching the C-863.12 On
The C-863.12 is intended for closed-loop operation with incremental position sensors (servo
mode On). After switch-on, open-loop operation is active by default (servo mode Off).
➢ Query the current operating mode with the SVO?, #4 or SRG? commands.
➢ Activate closed-loop operation with the SVO command.
➢ If necessary, program a startup macro that starts the C-863.12 via the SVO command in
closed-loop operation; see "Setting up a startup macro" (p. 106).
➢ Avoid motion in open-loop operation.
Requirements
✓ You have read and understood the general notes on startup (p. 51).
✓ The C-863.12 has been installed properly (p. 39).
✓ You have set the DIP switches on the C-863.12 in accordance with your application (p.
51).
Switching the C-863.12 on
➢ Plug the power cord of the power adapter into the power socket.
The C-863.12 loads the parameter values from the nonvolatile memory into the volatile
memory.
The STA LED on the front panel of the C-863.12 displays the state of the C-863.12:
− Lights up continuously: C-863.12 is ready for normal operation
− Flashing: C-863.12 is in firmware update mode
− Off: C-863.12 is not connected to the power supply or could be defective
➢ If the C-863.12 is in firmware update mode, update the firmware (p. 249).
➢ If the C-863.12 is properly connected to the power adapter (p. 47) and the STA LED
does not light up after switching on, contact our customer service department (p. 259).
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