Master Reset and Upgrade Jumpers JP4 on the main board contains two jumpers, MRST and UPGRD. The MRST jumper is the Master Reset jumper. When MRST is connected, the controller will perform a master reset upon PC power up or upon the reset input going low. Whenever the controller has a master reset, all programs, arrays, variables, and motion control parameters stored in EEPROM will be ERASED. The UPGRD jumper enables the user to unconditionally update the controller’s firmware. This jumper is not necessary for firmware updates when the controller is operating normally, but may be necessary in cases of corrupted EEPROM. EEPROM corruption should never occur. However, it is possible if there is a power fault during a firmware update. If EEPROM corruption occurs, your controller may not operate properly. In this case, install the UPGRD Jumper and use the update firmware function on the Galil Terminal to re-load the system firmware.
Stepper Motor Jumpers
For each axis that will used for stepper motor operation, the corresponding stepper mode (SM) jumper must be connected. The stepper mode jumpers, labeled JP5 and JP7 are located directly beside the GL-1800 IC's on the main board (see the diagram of the DMC-21x3). The individual jumpers are labeled E thru H and configure the controller for ‘Stepper Motors’ for the corresponding axes X-W when installed. Contact the Galil factory if stepper motor jumpers should be placed on your controller with each order for special part numbers.
(Optional) Motor Off Jumpers
The state of the motor upon power up may be selected with the placement of a hardware jumper on the controller. With a jumper installed at the MO location, the controller will be powered up in the “motor off” state. The SH command will need to be issued in order for the motor to be enabled. With no jumper installed, the controller will immediately enable the motor upon power up. The MO command will need to be issued to turn the motor off. The MO jumper is always located on the same block of jumpers as the stepper motor jumpers (SM).