Bob noticed two lines missing in initialization for this TDC in sfi4.crl
so I added those lines and recompiled the crl the secondary address 7 and write 2 :
# Standalone TDC 1877 # Common stop, 1.5 microsec time window(0xbb), LIFO depth 6 # backplane gate
geographic control TDC2SLOT write hex 40000000 secondary address 1 write hex 40000003 secondary address 18 write hex bb6 secondary address 7 write 2 release
please redownload to see if that makes a difference while I am checking if the readout lines need to be modified for single module read, I guess it should be similar to 1875.