Apollo 150 III, 120 III user manual COM Ports x

User Manual version 2305

4.2. COM Ports x 4

The APOLLO 120/150 features with four onboard COM ports. COM 1, 2 & 4 are D-SUB serial ports located at the rear side of the chassis, ready to connect to a wide range of serial devices. COM 3 is internal serial port reserved for touchscreen for internal connection. COM1, COM3 and COM4 are RS-232 and COM2 is RS-232/422/485, selected via jumper setting. For COM 2 RS-232/422/485 selection, please refer to SEC. 6.1.2.

COM 1, 2 & 4 are equipped with +5V/+12V power capabilities on pin 9, providing easy accommodation to a broad range of serial devices.

The COM port 5V/12 power is selected via jumper setting on the IO board. The IO is the signal board attached to the rear panel with 2 SCSI cables linking to the system motherboard to connect the onboard signal out to the external I/O ports.

Please refer to SEC. 6.2.2 for 5V/12 power selection.

APOLLO 120/150 III 4-31