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

Installing VMEbus Boards (continued)

A 575 secondary is any 575 CPU other than the primary 575 CPU. If you

want to add a 575 secondary to your system, follow the steps below.

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

this section.

1. Ensure that all power is disconnected from the VMEbus base. It is not

necessary to disconnect the battery to add a 575 secondary.

2. Your 575 CPU secondary must conform to the dipswitch configuration

established by your 575 primary. If the primary 575 CPU is set to the

USER-CONFIGURED mode, then all 575 secondaries must also be set to

the

USER-CONFIGURED mode. (575–2104 CPUs require an I/O annex

card in order to select user-configured mode.)

NOTE: You must know the dipswitch settings of your primary 575 before

you can correctly configure your 575 secondary. All primary and secondary

575 CPUs must have the same dipswitch settings for switches SW3 through

SW6. Refer to Section 4.10 for information about dipswitch configuration.

3. Install the 575 secondary. Refer to “General Guidelines” at the

beginning of this section for information about how slot placement

affects the assignment of applications during powerup.

4. Power up the 575 system.

If you have added the 575 secondary to an existing installation, the

added 575 secondary performs a battery-bad restart and then

transitions to PROGRAM

mode. All other 575 CPUs transition to the

state they were in prior to the powerdown.

5. Load your program in the new 575 secondary.

Guidelines for

Installing or Adding

a 575 Secondary to

the System

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Siemens SIMATIC TI500 Especificaciones Pagina 119