Baldor MicroFlex e100 - Biss Interface; Biss Interface (X8)

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Feedback 4-7MN1942
4.1.2 BiSS interface
The BiSS (Bi-directional Serial Synchronous interface) is an open-source interface that can be
used with many types of absolute encoder . The BiSS interface connections are made using the
15-pin D-type female connector X8. Twisted pair cables must be used for the complementary
signal pairs e.g. Data+ and Data-. The overall cable shield (screen) must be connected to the
metallic shell of the D-type connector. Connector X8 includes a ‘Sense’ pin, which is used to
detect the voltage drop on long cable runs. This allows the MicroFlex e100 to increase the supply
voltageonpin12tomaintaina5VDCsupply at the encoder (200 mA max).
Pin
BiSS function
1 Data+
2 Clock+
3 (NC)
4 Sense
5 Sin-
Note: If your cable has Sin and Cos
6 Sin+
N
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pairs they may be connected here.
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7 Cos-
However, these signals are not
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8 Cos+
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MicroFlex e100 for BiSS operation.
9 Data -
10 Cloc k-
11 (NC)
12 +5V out
13 DGND
14 (NC)
15 (NC)
Data+
Data-
+5V out
DGND
1
9
12
13
10
2
X8
Absolute
Encoder
Clock-
Clock+
Twis ted pai rs
Chassis
Connect overall s hield
to connector backshells.
Connect internal
shields to pin 13.
Motor
4
Sense
BiSS
Interface
Figure 19 - BiSS interface cable connections
1
8
9
15