The 2 Thorlabs photodetectors on the PSL table monitoring the DC power after the EOM (IO_AB_PD3) and after the rotation stage (IO_AB_PD2) had their readback cables connected to the EtherCAT auxiliary signals concentartor 3 in rack ISC-R4. IO_AB_PD2 is connected to Extra1 (rear) and IO_AB_PD3 is connected to Extra2 (rear). Slow controls channels have been added to H1ECATC1 PLC1. They are available as H1:PSL-EOM_A_DC and H1:PSL-PERISCOPE_A_DC.
The two diodes were swapped (H1:PSL-PERISCOPE_A_DC had the signal from PD3, and vice versa) I swapped the cables for now. I calibrated this based on my measurements in alog 8963,
The power before pick off (POWERMON) channel is calibrated in mW entering HAM1. I added this channel to the MC screen, now we can use this to monitor how much light is going into the vacuum.