NIM Primitives
4-4
TIWAY 1 TI505 NIM User Manual
F
I
E
L
D
First Transmitted Bit
Least Significant Bit
Most Significant Bit
Figure 2 Binary Weight of the Fields
4.3.1
Normal Operation and Exceptions
Normal Primitive operation consists of a request and response sequence without excep-
tions. Exceptions are errors found in the interpretation or execution of a Primitive.
The normal operation of a Primitive is for the initiating (Host) station to form a request
Primitive and address it to a Secondary on the network. If the request Primitive contains
allowable descriptor and data unit fields, a legal Primitive Code for the attached device,
and the correct Length Field value, then the Secondary will return a response Primitive
of the proper format.
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