Table 3-1, Register Offset Addresses Of The 1260-X121 Module; Table 3-2, Id Register Functionality Of The 1260-X121 Module - Racal Instruments 1260-X121 User Manual

Table 3-1, Register Offset Addresses of the 1260-X121 Module

Register
Name
0
1
2
3
ID
EPROM Descriptor

Table 3-2, ID Register Functionality of the 1260-X121 Module

Register Table
Module Version
All
Module Operation 3-4
address
So, for our example base A24 address computed earlier, the
following absolute addresses would apply for the operations
indicated:
205C01
205E01
Before explaining the particulars of reading and writing to port and
control registers, it is necessary to understand how the registers
interact with the 1260-X121 relays.
provides a detailed explanation of each register and how it
interacts with the 1260-X121 module.
Register Offsets to Add to Base Module Address
Write Location (hexadecimal)
0x01
0x03
0x05
0x07
Read Only
Read Only
Bit
0
1
2
3
4
5
6
7
Port A read or written at this location
ID register read at this location
Read Location (hexadecimal)
ID Register
Functionality Description
Always Reads 0x00
(Read Only)
Racal Instruments © 2005
1260-X121 User Manual
Table 3-2 through 3-5
0x01
0x03
0x05
0x07
0x201
0x203