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1260-22 User Manual
Operating The
1260-22 in
Register-Based
Mode
Module Operation 3-4
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The 1260-22 may be operated by directly setting one of the five
control registers on the 1260-22 module. The first control register on
the module operates relays K1 through K8.
register operates relays K9 through K16. The third control register
operates relays K17 through K24, and so on up to relay K40. When a
control register is updated, all relays controlled by that control register
are operated in parallel.
The control registers are located in the VXIbus A24 Address Space.
The actual A24 address for a control register depends on:
1. The A24 Address Offset assigned to the 1260-01T module by
the Resource Manager program.
program is provided by the VXIbus slot-0 controller vendor. The
A24 Address Offset is placed into the "Offset Register" of the
1260-01T by the Resource Manager.
2. The <module address> of the 1260-22 module. This is set by
the setting of the logical Address DIP switch SW1on the 1260-
22 to a value between 1 and 12 inclusive.
3. The control register on the 1260-22 to update. Each control
register on the 1260-22 has a unique address.
The base A24 Address for the 1260-22 module may be calculated by:
(A24 Offset of the 1260-01T) + (1024 x Module Address of
1260-22).
The A24 Offset is usually expressed in hexadecimal. A typical value
of 204000
will be used in the examples which follow. So, a sample
16
1260-22 with a module address of 7 would have the base A24
Address computed as follows:
Base A24 Address of 1260-22 = 204000
205C00
16
The control registers for 1260 series modules are always on odd A24
addresses. The five control registers for the 1260-22 reside at the
first five odd A24 addresses for the module:
(Base A24 Address of 1260-22) + 1 = Control Register 0
(Base A24 Address of 1260-22) + 3 = Control Register 1
(Base A24 Address of 1260-22) + 5 = Control Register 2
(Base A24 Address of 1260-22) + 7 = Control Register 3
(Base A24 Address of 1260-22) + 9 = Control Register 4
So, for our example, the five control registers are located at:
EADS North America Test and Services
Publication No. 980673-055 Rev. A
The second control
The Resource Manager
+ (400
16
x 7
) =
16
10
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