Racal Instruments 1260-112, User Manual, Page: 29 / 60

1260-112 User Manual
EADS North America Defense Module Operation 3-5
Test and Services, Inc. © 2002
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 1260-112 is:
1260-112 20-CHANNEL DPDT 2A SWITCH MODULE
So, for a 1260-112 whose <module address> is set to 8, the reply
to this query would be:
8 : 1260-112 20-CHANNEL DPDT 2A SWITCH
MODULE
Operating The
1260-112 in
Register-Based
Mode
In register-based mode, the 1260-112 is operated by directly
writing and reading control registers on the 1260-112 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 19, 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 1260-112 module. This is a
value in the range from 1 and 12 inclusive.
3. The 1260-112 control register to be written to or read from.
Each control register on the 1260-112 has a unique address.
The base A24 address for the 1260-112 module may be calculated
by:
(A24 Offset of the 1260-01T) + (1024 x Module Address of
1260-112).
The A24 address offset is usually expressed in hexadecimal. A
typical value of 204000
16
is used in the examples that follow.