Chung, F.-T. Chang, F.Y. Chang, L.-H. Chang, M.H. Chen, L.J. Lin, M.-C. Liu, Z.K. Lo, C.H. Tsai, C.L. Wang, Ch. Yeh, M.-S. Yu, T.-C. Upgrade of the Existing PID Controller and Oxygen Detection Alarm System for SRF Modules Operating in the Taiwan Light Source JACoW Geneva, Switzerland 978-3-95450-182-3 10.18429/JACoW-IPAC2017-TUPIK107 English 1968-1970 TUPIK107 SRF controls electronics status operation Contribution to a conference proceedings 2017 2017-05 http://dx.doi.org/10.18429/JACoW-IPAC2017-TUPIK107 http://jacow.org/ipac2017/papers/tupik107.pdf A Cornell-type superconducting RF cavity module was installed in the Taiwan Light Source (TLS) in 2004. New control electronics for the existing SRF modules have been designed, based on the original designs. In addition to the functions for operation, this SRF electronics system in the TLS also provides protection for the SRF modules and cryogenic system. This paper presents the SRF electronics modifications, which will enhance machine protection and make it easy to adjust and optimize operational parameters.