Racal Instruments 1260-132, Manual

Page: 29 / 39

1260-132 User Manual
Module Operation 3-5
Reply To The
MOD:LIST?
Command
The 1260-01T returns a reply to the MOD:LIST? command. This
reply is unique for each different 1260 series switch module. The
syntax for the reply is:
<module address> : <module-specific identification string>
The <module-specific identification string> for the 1260-132 are:
1260-132 HIGH POWER REED FORM A MUX
So, for a 1260-132 whose <module address> is set to 8, the reply
to this query would be:
8 : 1260-132 HIGH POWER REED FORM A MUX
Operating in VXI
Register-Based
Mode
In register-based mode, the 1260-132 is operated by directly writing
and reading control registers on the 1260-132 module. The first
control register on the module operates channels 0 through 7. The
second control register operates channels 8 through 15. The third
control register operates channels 16 through 23, etc. When a
control register is written to, all channels controlled by that register
are operated simultaneously.
The control registers are located in the VXIbus A24 Address Space.
The A24 address for a control register depends on:
1. The A24 Address Offset assigned to the 1260-01T module by
the Resource Manager program. The Resource Manager
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 1260-132 module. This is a value
in the range from 1 and 12 inclusive.
3. The 1260-132 control register to be written to or read from.
Each control register on the 1260-132 has a unique address.
The base A24 address for the 1260-132 module may be calculated
by:
(A24 Offset of the 1260-01T) + (1024 x Module Address of
1260-132).
The A24 address offset is usually expressed in hexadecimal. A
typical value of 204000
16
is used in the examples that follow.