Omron NX-EC0112, User Manual

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7 SSI Input Units
7 - 46 NX-series Position Interface Units User’s Manual (W524)
Additional Information
For a multi-turn encoder, the SSI Input Unit will perform gray code conversion treating the
multi-turn data and single-turn data as continuous data. In this case, always set the Encoder
Resolution parameter to 0. If you set the Encoder Resolution parameter to any value other than
0, the encoder present position will not be calculated correctly.
 Corresponding Gray Codes and Binary
The following table lists the gray codes and their equivalent values in binary.

Remainder Gray Code
For single-turn encoders, if the set resolution is not a power of 2, remainder gray codes are used for
calculations.
Hex Gray code Binary
0 0000 0000
1 0001 0001
2 0011 0010
3 0010 0011
4 0110 0100
5 0111 0101
6 0101 0110
7 0100 0111
8 1100 1000
9 1101 1001
A 1111 1010
B 1110 1011
C 1010 1100
D 1011 1101
E 1001 1110
F 1000 1111