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4-58

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

Installing Additional Backplane Connectors (continued)

You can also install individual J2 DIN connectors to the backplane of the

575 VMEbus base. This allows you to provide J2 connection using wire wrap

technology or flat ribbon cables without a J2 backplane assembly. For this

option, you need to install VME Z-Rails (PPX:2589739–8016).

To install a J2 connector, follow these steps:

1. Unplug the battery connector, unscrew the two battery retaining

screws, and remove the battery from the rear of the unit.

2. Remove the 6 screws (3 per side) that hold the rear panel, and remove

the rear panel from the unit (see Figure 4-31).

3. Remove the 10 M2.5 x 10mm screws that hold the backplane spacers.

Remove the spacers, and discard or save them for future use.

4. Using M2.5 x 10mm screws, mount the Z-Rails onto the rear chassis

rails directly, without the backplane spacers, as shown in Figure 4-33.

5. Mount the J2 connector(s) to the Z-Rails, using M2.5 x 10mm screws,

as shown in Figure 4-33.

6. Replace the rear panel and the battery assembly.

Existing J1 Backplane

Optional J2 Connector

M2.5 x 10mm screw

Chassis rail

Z-Rail

M2.5 x 10mm screws

M2.5 x 10mm screw

Figure 4-33 Installing J2 Connector

Installing Optional

J2 DIN Connector

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Siemens SIMATIC TI500 Spezifikationen Seite 141