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Upgrading Existing Series 500 Installations

C-18

SIMATIC 545/555/575 System Manual

Installing a PPX:500–5114–A RBC (continued)

When the CPU logs an RBC off the system, it sets a corresponding bit in one

of the status words that are available to your RLL program. Your RLL

program can use these bits to detect the loss of the RBC and control the

outputs of other bases as appropriate for your application. For details about

status words and more information about programming, refer to the

SIMATIC 505 Programming Reference User Manual.

The base thumbwheel switch shown in Figure C-7 is used to assign a base

number to the RBC for system identification. If you are using more than one

RBC, each RBC must be uniquely numbered. Refer to Table C-3 when

assigning base numbers. Base number 0 is reserved for the local base

(Series 505 controller) and must not be assigned to the RBC.

Table C-3 Base Numbers

Thumbwheel

Number

Base Number

Thumbwheel

Number

Base Number

Do Not Use 0* 8 8

1 1 9 9

2 2 10 10

3 3 11 11

4 4 12 12

5 5 13 13

6 6 14 14

7 7 15 15

* Base 0 is reserved for local base assignment. Therefore, do not assign base

address 0 to the Series 500 RBC.

Assigning Base

Numbers

1 2 ... 272 273 274 275 276 277 278 279 280 281 282 ... 321 322

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Siemens SIMATIC TI500 Especificaciones Pagina 277