Tree Format Yes - TR-Electronic C 58 Serie Benutzerhandbuch

5.2.1.2 Tree format yes

A synchronous serial data transmission with tree format is divided up in position bits
(P) for the Number of revolutions (left of the centerline) and in position bits for
the Number of steps per revolution (right of the centerline).
Independently of the programmed revolutions for the Number of revolutions are
output always 12 bits. Programmings > 12 bits are not permissible.
Depending on the programmed resolution for the Number
revolution max. 13 bits are output. Thus max. 8192 steps/revolution x 4096
revolutions can be transferred.
After the LSB position bit max. 8 freely programmable SSI special bits (S) are output. In
the default setting the SSI special bits are programmed to "Logical 0V" and
produce, if they take effect, added "zeros".
Leading "zeros" are produced, if for the programmed Number of revolutions less
than 12 bits are needed.
The Number of data bits required for the programmed Total number of steps
must be typed in exactly. During transmission of the programming to the measuring
system the required Number of data bits is calculated and compared with the
entered value. If there is a difference, the value calculated by the program is
displayed. With the take-over of the value the wrongly entered value is overwritten.
Restrictions:
•
•
•
Example 1
Measuring system:
-
-
-
MSB
Number of revolutions
Printed in the Federal Republic of Germany
07/30/2020
The number of steps per revolution must be a power of two
Origin of the measured value = 0
It can be used only Binary- or Gray-code
(related to 32 clocks)
8192 steps/revolution (13 bits)
4096 revolutions (12 bits)
--> Total number of steps = 25 bits, this corresponds to 25 data bits
1 – 12
24 13
P 2 – P 2
TR - ECE - BA - DGB - 0039 - 14
13 – 25
12 0
P 2 – P 2
Number of steps per revolution
of steps per
LSB
26 27 28 29 30 31 32
S1 S2 S3 S4 S5 S6 S7
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