Diagnozer 4.04 (Caterpillar ForkLifts Diagnostic) Europe description of the catalogue:

Diagnozer 3.90 is a service tool for each type of controllers installed in forklifts. It
monitors I/O values and failures, and sets various parameters.

CAT ForkLifts Internal combustion - DP/GP15N-35N, GC15N-33N, DP80N-160N, GP60N-70N. DP/GP40N-55N, DP150NT-240NT. DP70NT
CAT ForkLifts Electric - EP16KT-20KT, EP16K-20KC, EP20K-35K, EP20L-35K PAC, EP16NT-20NT, EP16N-20CN, EC15N-30N, ES3000-5000, EP10-25(H), EP10KRT-15KRT PAC, CAT VENUS, EP13(C)PNT-EP20(C)PNT, EP16(C)PN-EP20(C)PN, EC22N2-30LN2
CAT ForkLifts FC Controller - EP16KT-20KT, EP16K-20KC, DP/GP40K-50K, DP/GP15K-35K, DP60-70
CAT ForkLifts Warehouse - NR16N-20NH, ND2500-NR4500P, NOH10N-10NH

Program Works Examples -
Operator Password Option Set Up
Programming Lift and Speed Limits

Major functions
(1) Protection function
(2) Multilanguage support function
(3) Model selection function
(4) I/O value monitoring function
(5) Failure monitoring function
(6) Failure history monitoring function
(7) Setup value monitoring and change function
(8) I/O value graph display function
(9) Active test function
(10) Firmware update function
(11) Screen print function

Program Works Examples -
Operator Password Option Set Up
Programming Lift and Speed Limits