Siemens SIMATIC TIWAY 1 Manual de usuario descargar pdf (Pagina 41)

Installation

3-6

SIMATIC TIWAY I Series 500 NIM User Manual

3.4 Setting the Dipswitches

As Figure 3-3 illustrates, there are two blocks of dipswitches on the

Series 500 NIM. The lower block of eight switches is used to select the

NIM’s address on the network. The upper block of ten switches is used to

configure the network communication parameters. Note that the switches

are numbered from bottom to top. When setting up your NIM, use the

configuration data sheet in Appendix C of this manual to record important

configuration information.

NOTE: The configuration and address switch settings are read only once

following a power-up or reset. Be sure to reset the NIM following any

change in dipswitch settings or controller memory reconfiguration.

Each NIM on a TIWAY I Network must have a unique address. The range of

valid addresses is 1 to 254 (0000 0001 to 1111 1110 on switches 1–8 of the

lower switch block). Selecting addresses 0 or 255 (0000 0000 or 1111 1111)

on the address select switches will cause the NIM to initialize in a test

mode, and the NIM will fail to operate properly. See Table 3-1 for address

values (bit weight) of each switch and Table 3-2 for addressing examples.

Table 3-1 Network Address Selection

Open Closed

LSB

SW8 1 0

SW7 2 0

SW6 4 0

SW5 8 0

SW4 16 0

SW3 32 0

SW2 64 0

MSB SW1 128 0

Selecting the

Network Address

1 2 ... 36 37 38 39 40 41 42 43 44 45 46 ... 137 138

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Siemens SIMATIC TIWAY 1 Manual de usuario Pagina 41