Setting The Dipswitches; Selecting The Network Address; Network Address Selection - Siemens SIMATIC TIWAY 1 User Manual

3.4

Setting the Dipswitches

Selecting the
Network Address
3-6 Installation
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
LSB
MSB
Open
SW8 1
SW7 2
SW6 4
SW5 8
SW4 16
SW3 32
SW2 64
SW1 128
SIMATIC TIWAY I Series 500 NIM User Manual
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