Geo Brick Drive User Manual
Pinouts and Software Setup
93
SSI Control Registers Setup Example
Channel 1 is driving a 25-bit (13-bit Singleturn, 12-bit Multiturn) SSI encoder. The encoder outputs
binary data with no parity, and requires a 1 MHz serial clock.
Global Control Register
The Global Control register is a 24-bit hexadecimal word which is set up as follows:
M Divisor
Bit #:
Description:
Binary:
23 22 21 20 19 18 17 16 15 14 13 12 11 10
9
8
7
6
5
4
3
2
1
0
N Divisor
Trigger Delay
Protocol
=0 Rising Edge
=1 Falling Edge
Typically =0
=0 Trigger on Phase
=1 Trigger on Servo
$2 for
SSI
0
0
Hex ($):
0
1
1
0
0
0
1
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
0
6
3
0
0
0
2
cl
o
ck
Ed
ge
Field
Value
Notes
Global Control Word
M divisor
=99
Hex 0x63
$630002
N divisor
=0
Hex 0x0
Trigger clock
=0
Trigger on Phase (recommended)
Trigger Edge
=0
Rising edge (recommended)
Trigger Delay =0
No delay (typical)
Protocol Code =2
Hex 0x2, SSI protocol
Channel Control Register
The Channel Control register is a 24-bit hexadecimal word which is set up as follows:
Bit #:
Description:
Binary:
23 22 21 20 19 18 17 16 15 14 13 12 11 10
9
8
7
6
5
4
3
2
1
0
Bit Length
Hex ($):
0
0
0
0
0
0
0
0
0
0
0
1
0
1
0
0
0
0
0
1
1
0
0
1
0
0
1
4
1
9
Reserved
(always 0)
Tr
ig
ge
r
M
o
d
e
Tr
ig
ge
r
En
ab
le
0
Se
n
c
M
o
d
e
Reserved
(always 0)
=0 Continuous
=1 One shot
=0 Disabled
=1 Enabled
=0 Disabled
=1 Enabled
Encoder Resolution
(ST+MT)
Parity
Type
=00 None
=01 Odd
=10 Even
Содержание Geo Brick
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Страница 286: ...Geo Brick Drive User Manual Appendix A 286 APPENDIX A Schematic Samples Watchdog X15 Inputs J6 J7...
Страница 287: ...Geo Brick Drive User Manual Appendix A 287 Outputs J6 J7 603793 109 and earlier Outputs J6 J7 603793 10A and later...
Страница 288: ...Geo Brick Drive User Manual Appendix A 288 Limits Flags J4...
