9 Lifecycle HIMax System
HI 801 001 E Rev. 4.01 Page 110 of 122
3. Perform step 2 for all racks, one after the other and starting with the farthest one up to
rack 0.
4. After switching the system bus module located in rack 0, system bus A reconnects itself.
This can take a few minutes.
5. If the mode of system bus A is set to Network and connected, switch system bus B. To
do so, perform steps 2 through 3 for the right system bus modules.
The HIMax system operates with a network structure. The base plates can be reconnected
with the required structure.
9.2.4.2 Switching to Line Structure
Requirements for switching the system bus mode to line structure:
The base plate is structured as a network
The system is free of faults and properly configured.
The processor modules are in the STOP state.
The PADT is connected to the system through rack 0. A system login was performed.
Switching to Line Structure
1. First switch to system bus A. To do so, perform steps 2 through 3 for the left system bus
module of each rack:
2. Set the mode of the system bus module, which is farthest from rack 0, to Line. Farthest
means that connection to this rack passes through most of the other racks or Ethernet
segments.
3. Perform step 2 for all racks, one after the another and starting with the farthest one up to
rack 0.
4. After switching system bus A, readjust the system bus wiring in a line structure. Connect
the base plates such that the sequence of the rack IDs corresponds to a proper line
structure.
5. After system bus A wiring was successfully restructured, switch and restructure system
bus B. To do so, perform steps 2 through 3 for the right system bus modules.
The HIMax system operates with a line structure.
9.3 Maintenance and Repairs
i
For a safety-related application, the controller must be subjected to a proof test at regular
intervals. For more information, refer to the Safety Manual (HI 801 003 E).
HIMA recommends replacing the fans of the controllers at regular intervals.
NOTE
Malfunction due to electrostatic discharge!
Damage of the controller or electronic devices connected to it!
Only qualified personnel may perform maintenance actions to supply, signal and
data lines. Implement ESD protection measures. Personnel must be electrostatically
discharged prior to any contact with the supply ore signal lines!
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