32 Interface module XN-322-2SSI
32.2 Pin assignment
XN300 slice modules
06/16 MN050002 EN
www.eaton.com
271
32.2 Pin assignment
Figure 146:
Pin assignment XN-322-2SSI
a
X1
– C+ encoder 1
– C- encoder 1
– D+ encoder 1
– D- encoder 1
b
X2
– C+ encoder 2
– C- encoder 2
– D+ encoder 2
– D- encoder 2
32.3 Wiring
SSI encoders can be run in two different modes:
•
Binary Mode
•
Gray Decoder Mode
32.3.1 Binary Mode
When using binary mode, Gray code decoding must be turned off (it is turned
off by default). This mode can also be used when the encoder delivers Gray
code data that includes unencoded extra bits, i.e., as using automatic decod-
ing in this case would yield an incorrect final result. In this latter case, decod-
ing must be carried out in the PLC program. The encoder's deserialized data
stream will be mapped to the channel's relevant data register as a 32-bit
value.
X1
C+
C-
D+
D-
S
U
X2
C+
C-
D+
D-
2SS1
①
②
Summary of Contents for XN300
Page 4: ...II...
Page 14: ...10 XN300 slice modules 06 16 MN050002 EN www eaton com...
