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SPA2-2 interconnection schemes
UCC2 3-axis system with dc motor and tacho connection
UCC2 6-axis system with dc motor and tacho connection
![UCC2 6-axis system with dc motor and tacho connection](/cmmsupport/knowledgebase/media/img/gen/444957a6b17f4008aa7b4405a5c2e9c2.jpg)
Dual UCC BI interconnection
Dual UCC BI installations require a special E-STOP cable (part number A-5208-0011). This cable has three tails, all marked with their function, and must be installed as per the diagram below.
MCU, RS232, PICS, servo power amplifier / E-STOP cable and machine I/O should be connected to UCC BI 1.
![Dual UCC BI interconnection diagram with SPA2-2 and UCC S3](/cmmsupport/knowledgebase/media/img/gen/b0e51ba0ce4c4cca9433c57100cf7ef4.png)
NOTE: E-STOP cable (A-5208-0011) is supplied only with the SPA2-2 dual, dc, and linear kits.
CAUTION: The capability to use the UCC BI in a dual SPA system or a system using absolute scales is not yet available, please contact CMM support for further information.