Racal Instruments 1260-100X X Series, Руководство пользователя

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1260-X138 User Manual
Module Operation 3-6 Racal Instruments
©
2005
3. The 1260-X138 control register to be written to or read from.
Each control register on the 1260-X138 has a unique
address.
The base A24 address for the 1260-X138 module may be
calculated by:
(A24 Offset of the 1260-01T) + (1024 x Module Address of
1260-X138).
The A24 address offset is usually expressed in hexadecimal. A
typical value of 204000
16
is used in the examples that follow.
A 1260-X138 with a module address of 7 would have the base A24
address computed as follows:
Base A24 Address of 1260-X138 = 204000
16
+ (400
16
x 7
10
)
= 205C00
16
The control registers for Adapt-a-Switch plug-ins and conventional
1260-Series modules are always on odd-numbered A24
addresses. The three control registers for the 1260-X138 reside at
the first three odd-numbered A24 addresses for the module:
(Base A24 Address of 1260-X138) + 1 = Control Register
Group 0
(Base A24 Address of 1260-X138) + 3 = Control Register
Group 1
(Base A24 Address of 1260-X138) + 5 = Control Register
Group 2
So, for our example, the first three control registers are located at:
205C01 Control Register Group 0, controls relay
channels K7 to K14.
205C03 Control Register Group 1, controls channels
K15 to K22.
205C05 Control Register Group 2, controls channels
K23 to K30.
Table 3-2
shows the channel assignments for each control
register.