AH500 Operation Manual 3. I/O extension cable UC-ET010-24C 19 20 39 40 2 1 CN2 1 2 CN1 19 20 2 CN3 1 2 1 2 4. I/O extension cable UC-ET010-24A 39 40 39 40 1 1 1 2 1 2 5. External terminal modules for AH32AN02T-5C/AH64AN02T-5C UB-10-OR16A 2 1 5 3 4 7 6 2-19 Number Name Description Connec 40-pin IDC connector terminal ting a digital input/output module and an external 1 module. Connec 20-pin IDC connector terminal ting a digital input/output module and the external 2 module UB-10-OR16A or UB-10-OR16B Number Name Description Connecti 40-pin IDC connector terminal ng a digital input/output module and the external 1 module UB-10-OT32A