(1) POWER switch
(2) AC IN
(3) LED
(4) Fan Filter
(5) Signature label
(6) MT label
(7) Controller Number label
(8) Connection Check label
(9) M/C POWER connector
(10) M/C SIGNAL connector
(11) EMERGENCY connector
(12) TP port
(13) Development PC connection port
(14) Memory port
(15) Trigger Switch
(16) LAN (Ethernet communication) port
(17) I/O connector
(18) Standard RS-232C port
(19) Option slot
(20) Cable Clamp
(21) Battery (Mounted inside the controller)