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TB241 Rev1 How to Connect a Replacement Servo PC/Console
Overview
This tech bulletin shows the proper connection of new and old components with the new labeling system when trying to install an
updated PC that contains a new CPU10B into a system that has the original fiber optic cables or when replacing the fiber optic cables
in a system still using the original components It also explains the new checks when you home your control for the first time with your
new console or servo PC
Connections
 To properly connect the fiber optic cables and encoders to your new console or servo PC refer to the tables and pictures
below  Â
Table 1 New Label Correlation between Different Components
Table 2 Legacy Motion Card Fiber Optic Label Breakdown & Default PLC labels Â
Table 3 Legacy PLC and Drive Fiber Optic Label Breakdown Â
Table 4 Encoder Label Breakdown
Now that you know how the labeling works for the fibers and encoders take a look at the following pictures to put it all together and
connect your new console or servo PC to your system
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Illustration 1 Connections for a DC System             Illustration 2  Connections for an AC System
Initial Power up
Before powering up the system we would like to explain the improved homing procedure The ?318 _axis too close to switch?
message has been removed Instead the Centroid software keeps track of how many encoder counts between the home switch and
the encoder's index pulse to set home If this number differs by a quarter of a revolution from the previous time that the homing
program ran the message ?WARNING _axis home differs by xxxx counts Accept new home position Y/N ?? will appear If Y is
pressed then the new difference in encoder counts gets stored in the homelog txt file
Power up your control and press Cycle Start to home your machine If the above encoder count warning message appears for any of
the axes press Y to continue with the homing procedure Once the machine has homed you should never see that message again If
the message does appear it could be an issue with the home switch encoder or the motor pulley After the machine has homed all of
your work coordinates will have to be changed since the reference has now changed
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Document History
Rev1 Created on 2010 07 21
by #240