Sensoray 2600 Manual de usuario Pagina 33

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2600 Family Instruction Manual
28
Chapter 5 : Common IOM Actions
Notes Most IOMs have provision for installing address
shunts. These shunts enable the system
integrator to specify an address for the module,
with a value in the range 0 to 15 decimal.
The MM does not use the board address; it is
provided for exclusive use by the Ethernet client.
For example, the client may use the module
address to differentiate between IOMs of the
same type, or to verify that IOMs are connected
to the correct IOM ports on the MM.
5.2.8 LinkQuery
Function Queries an IOM port to determine if a module is
present.
Opcode 0xFE
Command none
Response none
Notes In normal operation, LinkQuery should never
be invoked by the client. LinkQuery is
invoked by the gateway, in a manner that is
transparent to the Ethernet client, to determine if
a module is connected to a specific IOM port.
LinkQuery does not cause the target module’s
RCV or XMT indicators to light as this action is
not intended for use by the Ethernet client.
5.2.9 NOP
Function No operation.
Opcode 0xFF
Command none
Response none
Notes NOP may be used to acquire IOM status when no
other actions are required.
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