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RC4000 ACU Boardset
2.1.2.2.1 J1 - Interboard Bus B
Designation
J1
The main function of Bus B is to provide drive control signals from the computing board to the drive
board. The following table is provided for reference in case a particular installation of the boardset
requires use of some spare interfaces available on Bus B.
Pin
Signal
1
DRIVE EN
3
DRIVE AZ1
5
DRIVE AZ3
7
AZ SPD
9
DRV FAULT
11
GND
13
DRIVE EL1
15
DRIVE EL3
17
DRIVE AZ4
19
GND
21
I2C1 SCL
23
GND
25
V_DRIVE
27
DRIVE PL0
29
DRIVE PL2
31
UP_SPARE1
33
GPIO6
35
GPIO8
37
GND
39
+5 VDC
-- bold => dedicated drive control signals
PCB
Pin Count
"Bus B"
40
*
*
*
* - available for custom I/O
20
Chapter 2
Connector
Right Angle Shrouded Header
Pin
Signal
2
DRIVE AZ0
4
DRIVE AZ2
6
EL SPD
8
GND
10
POL SPD
12
DRIVE EL0
14
DRIVE EL1
16
GPIO3
18
DRIVE EL4
20
GPIO4
22
I2C1 SDA
24
GND
26
GPIO5
28
DRIVE PL1
30
DRIVE PL3
32
UP_SPARE2
34
GPIO7
36
GPIO9
38
GND
40
+5 VDC
Hardware
Type #
3
*
*
*
*
*
*
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