Siemens SIMATIC TI500 Especificaciones descargar pdf (Pagina 121)

4-38

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

Installing VMEbus Boards (continued)

If you want to replace a 575 primary that is not in slot 1 (a 575 that has

been configured as a primary by means of the primary switch (SW7) as

described in Section 4.10), follow the steps below:

NOTE: Read and abide by the warnings and cautions at the beginning of

this section.

1. Before you remove the 575 primary, save the memory of the 575

primary, any 575 secondaries, and any third-party masters.

2. Ensure that all power is disconnected from the VMEbus base. Do not

omit this step.

3. Remove the 575 primary CPU.

4. Ensure that dipswitch configuration of the new 575 primary is

configured to match the dipswitch configuration of the previous

primary. Refer to Section 4.10 for information about dipswitch

configuration.

5. Install the new 575 primary.

6. Power up the system.

The 575 primary and all the 575 secondaries perform a battery-bad

powerup.

7. Update the battery status after the PCG LED lights up on the 575

system controller; that is, when the LED on the bottom right-hand side

turns on. See Figure 4-19 for the location of the LEDs.

When a 575 CPU is not in slot 1, then the system controller is

responsible for informing the primary 575 CPU about battery status.

The system controller writes either 255 (FF

) for battery good, or 0 for

battery bad, to the battery status (BATGOOD) location at address

BASE-ADDRESS+4, where BASE-ADDRESS is the base address of the 575

system tables; see Section 4.11. This variable is an 8-bit integer. For

information about the 575 CPU’s system tables, refer to the SIMATIC

575 Interboard Communication Specification (PPX:575–8103–x).

8. Load your program(s).

Guidelines for

Replacing a 575

Primary Not in

Slot 1

1 2 ... 116 117 118 119 120 121 122 123 124 125 126 ... 321 322

Sin comentarios

Siemens SIMATIC TI500 Especificaciones Pagina 121