Rockwell Automation 999 IMC S Class Compact Motion Controller (Cat. No. 4100-999-122) User Manual
Page 61

Installation and Hookup
4-19
Publication 999-122 - January 1997
If you are making an RS-422 cable, five conductors are required.
Construct the cable as shown below, making sure to use the correct
mating connector for your PC or terminal. The mating connector for
the IMC-S/23x is a standard male 9-pin D-type (AMP P/N 205204-1).
Be sure that the TxD+/- and RxD+/- pairs are twisted as shown above
for best noise immunity.
Connecting Encoders
The IMC-S/23x provides optically-isolated, differential line receiver
(AM26LS32) encoder inputs for all axes. Differential-output line driver
encoders must be used–single-ended encoders are not compatible.
Encoder power is also provided by the IMC-S/23x and can be selected
as either 5V or 12V depending on the requirements of the encoder as
explained in Select the Encoder Power Voltage earlier in this section.
Regardless of the encoder power voltage selection, however, the
encoder outputs must be 5V (TTL) level signals. The encoder power
supply in the IMC-S/23x is capable of supplying a total of 1 Ampere
to power all the encoders connected to the IMC-S/23x.
!
ATTENTION: Set encoder power switches for 5V or
12V encoder power before connecting encoders.
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