PMAC/PMAC2 V1.17C Addendum I1018 SSI Channel 2 Mode Control [New, Geo PMAC only] Range: 0 – 3 Units: none Default: 3 I1018 specifies the mode for interpreting data from the second SSI-encoder interface on a Geo PMAC. The following table lists the possible values of I1018 and the data formats they cause the Geo PMAC to expect: I1018 is only used if the Geo PMAC’s Feedback Option 2 for absolute position feedback is ordered. I1019 SSI Channel 2 Word Length Control [New, Geo PMAC only] Range: 0 – 3 Units: none Default: 3 I1019 specifies the word length in bits from the second SSI-encoder interface on a Geo PMAC.
The following table lists the possible values of I1019 and the word lengths they cause the Geo PMAC to request: I1019 is only used if the Geo PMAC’s Feedback Option 2 for absolute position feedback is ordered. V1.17C Firmware Version 13 I1018 SSI Clock Freq. 0 (Reserved) 1 (Reserved) 2 Numeric binary 3 Gray code I1019 Word Length 0 12 bits 1 16 bits 2 20 bits 3 24 bits