Table 3-6, Register3 Functionality Of The 1260-X121 Module; Table 3-7, Eprom Descriptor Functionality Of The 1260-X121 Module - Racal Instruments 1260-X121 User Manual

Table 3-6, Register3 Functionality of the 1260-X121 Module

Register Table
Module Version
All
Note:
Open:
Closed:

Table 3-7, EPROM Descriptor Functionality of the 1260-X121 Module

Register Table
Module Version
All
Module Operation 3-6
Bit
Relay 24 (Connect J200-P and J200-X)
0
1 Relay 25 (Connect J201-C and J201-B)
Relay 26 (Connect J201-A and J201-K)
2
Relay 27 (Connect J201-J and J201-H)
3
4 Relay 28 (Connect J201-S and J201-R)
Relay 29 (Connect J201-P and J201-X)
5
Not Used
6
7 Not Used
Indicates C not connected to NO contact
Indicates C connected to NO contact
EPROM Descriptor Register
Bit
0 Each time this register is read, it advances a memory pointer to
the next memory location in the on-board EPROM. To reset this
1
pointer to the beginning, read the ID register. This resets the
2
memory pointer. The descriptor register contains a long string of
3
data, typically used by the Adapt-a-Switch carrier for configuration
4
purposes. Additionally, this data contains the card identification
5 string for the specific type of card (i.e. 1260-121). These
identification strings are located at EPROM memory locations
6
0x23 through 0x34.
7
Writing to a port location is a straightforward process. Setting a bit
high in a port register causes the corresponding relay channel to
close.
It is especially important to realize that a single write operation
controls eight
simultaneously. Therefore if only a single bit change is desired,
the following process must be observed.
Register 3
Functionality Description
(0: relay open
(0: relay open
(0: relay open
(0: relay open
(0: relay open
(0: relay open
Functionality Description
separate control lines
1260-X121 User Manual
1: relay closed)
1: relay closed)
1: relay closed)
1: relay closed)
1: relay closed)
1: relay closed)
or output devices
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