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B
Register Definitions
Bit
Purpose
Setting
Bit
7
Purpose
undefined
Setting
x
Bit
Read
B-36
Card Type (R)Base + 0
This register reads back the card type of the card. The N9378A
is uniquely identified by card type 05
7
6
Card
Card
Card
Type
Type
Type
0
0
• Read Only
• Power On/Reset State = 05
Card Configuration (R) Base + 1
This register reads back the card configuration. The default
read back is FF
to create a configuration byte unique to the loads installed.
(Note that you can use the mezzanine card registers described
below for additional load configuration information.)
Use the actions
6
5
undefined
undefined
x
x
• Read Only
• x = undefined
Status & Control (R & W) Base + 2
This register reads back the card's status. It also can be used to
reset the board or open all relays (OAR).
Card status is defined as the state of the relay timer. The relay
timer is designed for the armature relays (>4ms). The timer
restarts whenever the registers controlling the respective relays
are written to or the card is reset. The card remains in the busy
state until the timer has timed out.
7
6
1
1
h
5
4
3
Card
Card
Type
Type
0
0
0
h
, but you can pull down bits to zero as required
h
loadCardGetInfo
4
3
undefined
undefined
x
x
5
4
3
1
1
1
.
h
2
1
Card
Card
Type
Type
1
0
h
to read this register.
2
1
undefined
CC1
x
state
h
2
1
1
1
E6198B Switch/Load Unit User Manual
0
Card
Type
1
0
CC0
state
0
~
Busy
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