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How to setup/teardown CCU/SCU for Modbus Control

• How to setup/teardown CCU/SCU for Modbus Control
  • Enabling CCU Modbus Control
  • Changing The Az/El Hardware from Wire-Wrap to PLC
  • Returning CCU to non-Modbus Control
  • Changing The Az/El Hardware from PLC to Wire-Wrap
  • Enabling SCU Modbus Control
  • Changing The SDU Hardware from Wire-Wrap to PLC
  • Restoring SCU non-Modbus Control
  • Changing The SDU Hardware from PLC to Wire-Wrap
  • Changing OCU Status Def Faults and Statuses file.

Enabling CCU Modbus Control

• login to the ACU host (currently 'donna')
  • ssh donna
• login to the CCU single board via the terminal server (or directly)
  • telnet gbtrba 10
  • (optional) rlogin ccu
• Copy the Modbus enabled image to the sccu.ro executable:
  • cd "/sd0/" <====(Note trailing slash)
  • copy "X080519.RO", "SCCU.RO"
  • (Press Cntrl-] to get logout from telnet, or type logout if rlogin was used N.B.: Do Not type exit )

Changing The Az/El Hardware from Wire-Wrap to PLC

• Change hardware connections over to PLC
  • 1. Turn off (Large) breakers on the 4 Power Drive Units (PDU)
  • 2. Turn off breaker for the 3 phase 220 volt brakes.
  • 3. Turn off the logic power in the Interface Cabinet.
  • 4. Remove all ribbon cables from the original wire wrap boards at the intermediate connectors.
  • 5. Install the ribbon cables from the PLC to the intermediate connectors.
  • 6. There is a connector on the PLC system labeled "By-Pass Connector". This connector must be DISCONNECTED when running under PLC control. It is essential for the safety of the telescope.
  • 7. Verify all ribbon cables are connected correctly.
  • 8. Turn on the Interface Cabinet.
• Reboot CCU and CCU-Aux CPU's by pressing Red button
• After the CCU reboots turn on the 4 PDU breakers and the brake breaker.
• Clear all faults on the OCU.

Returning CCU to non-Modbus Control

• login to the host 'donna'
  • =ssh donna =
• login to the CCU single board via the terminal server (or directly)
  • telnet gbtrba 10
  • (optional) rlogin ccu
• Copy the 'currently released' image to the sccu.ro executable:
  • cd "/sd0/" <====(Note trailing slash)
  • copy "CURRENT.RO", "SCCU.RO"
  • (Press Cntrl-] to get logout from telnet, or type logout if rlogin was used)

Changing The Az/El Hardware from PLC to Wire-Wrap

• Change hardware connections over to non-PLC configuration
  • 1. Turn off (Large) breakers on the 4 Power Drive Units (PDU)
  • 2. Turn off breaker for the 3 phase 220 volt brakes.
  • 3. Turn off the logic power in the Interface Cabinet.
  • 4. Remove all ribbon cables from the PLC at the intermediate connectors.
  • 5. Install the ribbon cables from the original wire-wrap boards to the intermediate connectors.
  • 6. Verify all ribbon cables are connected correctly.
  • 7. There is a connector on the PLC system labeled "By-Pass Connector". This connector must be CONNECTED when running under wire-wrap control. The telescope will not function without it.
  • 7. Turn on the Interface Cabinet.
• Reboot CCU and CCU-Aux CPU's by pressing Red button
• After the CCU reboots turn on the 4 PDU breakers and the brake breaker.
• Clear all faults on the OCU.

Enabling SCU Modbus Control

• login to the ACU host (currently 'donna')
  • ssh monctrl@donna
• change directory to the SCU boot area:
  • cd /export/home/donna/services/sccu/gbt/exec/mv167-vxworks (note this area is mirrored on kintac)
• record where the link 'sccu.ro' points (for later reference)
  • ls -l sccu.ro
    • lrwxrwxrwx 1 monctrl monctrl 16 Jun 23 11:43 sccu.ro -> sccu.vx51.100307
• remove the link, and add a new one
  • rm sccu.ro
  • ln -s X080807.scu.ro sccu.ro
• log into the scu and change the boot parameters
  • rlogin scu

--> bootChange()

'.' = clear field;  '-' = go to previous field;  ^D = quit
boot device          : ei
processor number     : 0
host name            : xcu
file name            : //vxWorks.st   <================= put //vxWorks5.3 here
inet on ethernet (e) : 172.24.1.21:fffffff0
inet on backplane (b):
host inet (h)        : 172.24.1.25
gateway inet (g)     :
user (u)             : wriver
ftp password (pw) (blank = use rsh): xxxxxxx
flags (f)            : 0xa0
target name (tn)     : scu
startup script (s)   : /export/home/prima/services/sccu/gbt/etc/startup/realscu.startup
other (o)            :
--> logout

Changing The SDU Hardware from Wire-Wrap to PLC

• Change hardware connections over to PLC
  • 1. Turn the 110 Volt logic power off in the left cabinet.
  • 2. Disconnect all 6 ribbon cables from the SDU Interlock board at the intermediate connectors.
  • 3. Connect the 6 ribbon cables from the PLC to the intermediate connectors.
  • 4. Reboot SCU and SCU-Aux CPU's by pressing Red button
  • 5. Turn the 110 Volt logic power on AFTER the SCU completes rebooting.
• Clear the SDU faults on the OCU.

Restoring SCU non-Modbus Control

• login to the ACU host (currently 'donna'
  • ssh monctrl@donna
• change directory to the SCU boot area:
  • cd /export/home/donna/services/sccu/gbt/exec/mv167-vxworks
• remove the link, and add a new one
  • rm sccu.ro
  • ln -s  sccu.vx51.100307 sccu.ro
• log into the scu
  • rlogin scu

--> bootChange()

'.' = clear field;  '-' = go to previous field;  ^D = quit
boot device          : ei
processor number     : 0
host name            : xcu
file name            : //vxWorks5.3   <================= put //vxWorks.st here
inet on ethernet (e) : 172.24.1.21:fffffff0
inet on backplane (b):
host inet (h)        : 172.24.1.25
gateway inet (g)     :
user (u)             : wriver
ftp password (pw) (blank = use rsh): xxxxxxx
flags (f)            : 0xa0
target name (tn)     : scu
startup script (s)   : /export/home/prima/services/sccu/gbt/etc/startup/realscu.startup
other (o)            :
--> logout

Changing The SDU Hardware from PLC to Wire-Wrap

• Change hardware connections to non-Modbus configuration
  • 1. Turn the 110 Volt logic power off in the left cabinet.
  • 2. Disconnect all 6 ribbon cables from the PLC at the intermediate connectors.
  • 3. Connect the 6 ribbon cables from the Interlock board to the intermediate connectors.
  • 4. Reboot SCU and SCU-Aux CPU's by pressing Red button
  • 5. Turn the 110 Volt logic power on AFTER the SCU completes rebooting.
• Clear the SDU faults on the OCU.
• Reboot SCU and SCU-Aux CPU's by pressing Red button

Changing OCU Status Def Faults and Statuses file.

• At the OCU keyboard type Cntrl-Alt-5 to get to a QNX screen.
• cd to the working directory.
  • cd /gbt/bin
• Copy the working of StatusDef.doc to a holding area.
  • cp StatusDef.doc StatusDef.nnn
• Copy the plc version of StatusDef to the working file.
  • cp StatusDef.plc StatusDef.doc
• Go to the back of the OCU rack and on your left hand side slip your little finger between the rack and the OCU. There is a power switch you need to turn off then turn back on, unless you know a better way to reset QNX.
• After the OCU is rebooted it will have the proper StatusDef for faults and statuses.
• I believe you can figure from this sequence how to restore StatusDef.doc to the original version if need be.

-- JoeBrandt - 12 Aug 2008