IX34510a_e.doc / Apr-11
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5.5.
Testing Functions
The test menu can be accessed while doing the basic set up, as shown in section 4.1. Most of
these tests are for factory use only, but the following tests may also be helpful for the user:
Menu
Selection
Text
Description
Cd (Clock- and data wiring test):
When the wiring of clock line and data line is ok,
the display shows “Cd 11”. Display of “Cd 10”
means that the clock line is o.k. but the data wires
are false (wrong polarity) and "Cd 01" indicates a
problem with the clock lines.
With master mode, only the data lines are subject
of this test.
Cd (Clock- and data function test):
The next test generates clock and data signals and
feeds them directly into the rear terminals.
Therefore please remove the encoder connection.
“Cd iO” says that clock and data interface are all
right. and all other displays indicate a problem
with the SSI interface circuit.
5.6.
Error Messages
The unit can detect and display the errors shown below. If you find an error message, please
check again the encoder wiring and the settings of all SSI-relevant parameters.
Menu
Description
Overflow:
The selected SSI Baud Rate is too high.
Please set lower rate.
Error-bit: the error bit or the power failure bit of the encoder (PFB) is set
Error-time-out: with Slave mode, during the last 0.6 seconds (plus wait time setting)
the unit did not receive any valid data.
Error-Format: with Slave mode, a telegram with too short length has been received.
Missing encoder (1): right after power-up the unit detects that all SSI telegrams are
empty (all bits = 1)
Missing encoder (2): during normal operation the unit detects that regular SSI
telegrams are suddenly followed by empty telegrams (all bits = 1)
DA6-SSI/A-U
