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Communication Protocol
11.10 Mode 11 Data
11.10.1 Modulator to CCB
Mode 11 is dedicated, for the purpose of diagnostics, to provide a means to test device status. It also provides an
indication if the Cell bypass option is available.
11.11 Device Testing
In order to determine operational integrity of the Power cells, the status of each power switching device and bypass
components can be tested via Mode 11. In the case of Perfect Harmony Next Gen Control, cell bypass is not
available, so the bypass tests are not performed. These device tests are controlled by the Harmony microprocessor
and are performed one device at a time (and one cell at a time) where switching and bypass tests are not performed if
any blocking failures are detected.
11.11.1 Device Test Control Data
11
All Devices Blocking
Q1 Switching
Q2 Switching
Q3 Switching
Q4 Switching
Bypass (using Q1)
Bypass (using Q2)
11-8
Table 11-11: Mode 11 Modulator to CCB Data
Bit
0
1 -> Mode definition bit
1
1 -> Mode definition bit 1
2
Enable Device Testing
3
Device Test A (Least Significant Bit)
4
Device Test B (Most Significant Bit)
5
Not Device Test Enable
6
Sync pulse for temperature engine
7
Odd Parity Bit
Table 11-12: Mode 11 Device Test Control Data
Test
Bit 2
1
0
1
1
1
0
0
s
MicroHarmony Cell Sizes 40 - 260A Manual
Description
Bit 3
Bit 4
1
1
1
1
0
1
1
0
1
1
0
0
1
0
19001467: Version 1.0
Bit 5
1
1
1
1
0
1
1
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