This should be the manual for the Ten Power Inc. power supply at the bottom of the e+ line power supply rack.
Manual covers the P series by Ten Power Inc., the front panel of ours looks like it is a P63 (output <= 60 V) or P83 (output >= 80 V, says the manual...).
Remote operation info in Chapter 3.
J1 connector Fig- 3-2 page 3-4 (31 of pdf). Jut below are the Sections 3-3 and 3-4 (remote current/voltage programming).
J1 connection options for remote programming, page 3-10 onwards (36 of pdf).