B-14 E6198B Switch/Load Unit User Manual
B Register Definitions
Load Select (W) Base + 4
h
This register controls the Load Select switch armature relays of
the card, one per channel. The register uses positive logic: 1 =
closed. Writing to this register starts the armature relay timer.
• Write Only
• State: 1 = closed, 0 = open
• Power On/Reset State = 0
Power Select (W) Base + 5
h
This register controls the Pull Up/Down Power Select armature
relays of the card, one per channel pair. These relays are Form
C (double-pole, single-throw) and the register uses positive
logic: 1 = Normally open (NO) shorted to COM, normally closed
(NC) is open; 0 = NC shorted to COM, NO is open. The power
buses selected depend on how the card is configured by the
user. Writing to this register starts the armature relay timer.
• Write Only
• State: 1 = NO shorted to COM, NC is open; 0 = NC shorted to
COM, NO is open
• Power On/Reset State = 0
Bit 765432 10
Purpose
K43
CH 8
K42
CH 7
K33
CH 6
K32
CH 5
K23
CH 4
K22
CH 3
K13
CH 2
K12
CH 1
Setting state state state state state state state state
Bit 7-4 3 (011) 2 (010) 1 (001) 0 (000)
Purpose
Undefined K41
CH 8/7
K31
CH 6/5
K21
CH 4/3
K11
CH 2/1
Setting X state state state state
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