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Configuration Information
This section contains information on the module's logical address switch and master/slave cable(s).
Logical Address Guidelines
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The E1450 Timing Module must have a Logical Address that is an Instrument Identifier. An
Instrument Identifier is a Logical Address that is an exact multiple of 8 (i.e., 8, 16, 24, 32, . . . 240).
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E1451 Pattern I/O and E1452 Terminating I/O modules must have successive Logical Addresses
(LA) beginning with the address of the Instrument Identifier. The LA order must correspond to
slot order (that is, lowest LA in lowest numbered slot; highest LA in highest numbered slot). The
E1452 Terminating I/O Module must have the highest LA (last in the list).
Logical Address Switch
Figure 2-1 shows a Logical Address Switch. Notice that the switch is made up of 8 switches each having a
decimal value. To determine the Logical Address, add the decimal values of all set switches. For
example, if you set switches 7 and 3 to "1" (see Figure 2-1), the logical address is 128 + 8 = 136. The
GPIB Secondary Address is determined by dividing the Instrument Identifier by 8. For example, if the
Instrument Identifer logical address is 136, the Secondary Address is 136 / 8 = 17. Figure 2-2 shows how
to set the Logical Address switch.
2-2 Configuration and Wiring
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Figure 2-1. Logical Address Switch
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