The System Bus
i-on Range
Page 26
Figure 7. Zone Numbering Example.
In table form, the zone numbering for the example in Figure 3 would look like
this:
Control Unit
EXPW-10 (device 1-01) EXPR10 (device 1-02)
Zone No. Address
U
se
d
Zone
Address
U
se
d
Zone
Address
U
se
d
Zone 000 P0<00<00 * Zone 010 W0<01<00 * Zone 020 R0<02<00 *
Zone 001 P0<00<01 * Zone 011 W0<01<01 * Zone 021 R0<02<01 *
Zone 002 P0<00<02 * Zone 012 W0<01<02 * Zone 022 R0<02<02 *
Zone 003 P0<00<03 * Zone 013 W0<01<03 * Zone 023 R0<02<03 *
Zone 004 P0<00<04
Zone 014 W0<01<04 * Zone 024 R0<02<04 *
Zone 005 P0<00<05
Zone 015 W0<01<05
Zone 025 R0<02<05
Zone 006 P0<00<06
Zone 016 W0<01<06
Zone 026 R0<02<06
Zone 007 P0<00<07
Zone 017 W0<01<07
Zone 027 R0<02<07
Zone 008 P0<00<08
Zone 018 W0<01<08
Zone 028 R0<02<08
Zone 009 P0<00<09
Zone 019 W0<01<09
Zone 029 R0<02<09
The control unit has allocated each device a block of zone numbers, up to the
capacity of the device. Note the link between zone number and connection
point address. The last digit of the connection point address is the same as the
last digit of the zone number. The middle digits of the connection point address
(the bus device number - underlined) are the same as the first two digits of
the zone number (underlined).
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