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Installing 575 System Hardware SIMATIC 545/555/575 System Manual

Installing VMEbus Boards (continued)

The following guidelines apply when you install SIMATIC VMEbus I/O and

third-party boards:

• Save the controller memory with TISOFT before you remove or install

boards.

• Do not leave any open slots between cards. Any open slots must be on

the far right side of the base, unless you set the dipswitches on the

backplane to bypass the empty slots. See Figure 4-20.

• You can place third party boards between SIMATIC VMEbus I/O

modules, but be sure to install any boards that do not pass daisy-chain

signals to the right side of the boards that require them.

• Standard VMEbus modules have a 0.8-inch front bezel. Modules with

0.8-inch wide front bezels can be installed directly adjacent to each

other. If you use SIMATIC 575 VME I/O modules with a 1-inch front

bezel in the 16-slot PPX:575–2130 base, you need to install a 0.6-inch

blank filler bezel (PPX:2589739–8015) to ensure proper air flow in the

base. A 1-inch-wide VME module takes two slots in the 16-slot base.

• Some VMEbus modules use tab connectors to secure the front bezel to

the base. Follow the instructions provided with your module for proper

installation procedures.

• To fill any gaps left by empty slots and to ensure proper air flow in the

base, install an 0.8-inch (PPX:2589739–8014) or 0.6-inch

(PPX:2589739–8015) blank filler bezel as appropriate. This also

ensures that the system meets environmental, safety, and noise

specifications.

Guidelines for

Installing SIMATIC

VMEbus I/O and

Third-Party Boards

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Siemens SIMATIC TI500 Especificaciones Pagina 123