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Upgrading Existing Series 500 Installations

C-3

SIMATIC 545/555/575 System Manual

C.2 Upgrading a 520/520C/530/530C/530T System

When you upgrade from a 520, 520C, 530, 530C, or 530T system, all of your

existing Series 500 bases, whether local or remote, must be converted to

Series 500 remote bases. The CPU and I/O channel converter (IOCC) on the

local base, and the distributed base controller (DBC) on the remote base(s),

are all replaced by the same unit, the PPX:500–5114–A RBC. In the case of

a 520/530 CPU or a PPX:500–2103 DBC, it is necessary to install an adapter

base and modular power supply when you upgrade to the 500–5114–A RBC.

Consider these points when you prepare to upgrade your system:

• In the case of 520x/530x systems, the Series 500 physical base

assembly is composed of one or two logical bases. A logical base is

defined as a contiguous group of eight I/O slots. For example, the

16-slot physical base assembly has two 8-slot logical bases. Each logical

base has a unique base address.

By comparison, the Series 505 remote base assembly addresses up to 16

contiguous slots with a single base address.

• To reduce down time for your process, plan to install the new RS-485

twin axial cables for the I/O trunkline before upgrading the hardware

for each I/O base.

• Update time for a special function module is significantly faster when

you install the module in the local base, rather than a remote base.

However, 545 and 555 CPUs are installed in a Series 505 local base,

and Series 500 SF modules cannot be placed in a Series 505 local base.

Therefore, if SF module updates are critical to your application,

consider replacing the Series 500 SF modules with Series 505

SF modules and installing them in the local base with the 545/555.

If all SF modules cannot be installed in the local base, consider placing

low-activity SF modules, such as the ASCII, BASIC, or Dual

Communication Port (DCP) modules, in a remote base. Place

high-activity modules, such as the NIM or Peerlinkt, in the local base.

To perform an upgrade, follow the procedure on the next page and refer to

Figure C-1.

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Siemens SIMATIC TI500 Especificaciones Pagina 262