UC-7101 Hardware User’s Manual
Hardware Connection Description
Connecting to a Serial Device
Connect the serial cable between the UC-7101 and the serial device(s).
The two serial ports (P1 and P2) use male DB9 connectors, and can be configured for
RS-232/422/485 by software. The pin assignments are shown in the following table:
Male DB9 Port
RS-232/422/485 Pinouts
1 2 3 4 5
6 7 8 9
Pin
RS-232
RS-422
RS-485
(4-wire)
RS-485
(2-wire)
1 DCD
TxDA(-)
TxDA(-) ---
2 RxD
TxDB(+)
TxDB(+) ---
3 TxD
RxDB(+)
RxDB(+)
DataB(+)
4 DTR
RxDA(-)
RxDA(-)
DataA(-)
5 GND GND GND GND
6 DSR ---
---
---
7 RTS ---
---
---
8 CTS ---
---
---
Serial Console Port
The serial console port is a 4-pin pin-header RS-232 port. It is designed for serial console
terminals, which are useful for identifying the UC-7101 boot up message.
Serial Console Port & Pinouts
Serial Console Cable
4
3
2
1
Pin Signal
1 TxD
2 RxD
3 NC
4 GND
Installing a Secure Digital (SD) Memory Card
UC-7101
The SD slot is located on the right side of the UC-7101 enclosure. To install an SD card, you must
first remove the protective cover to access the slot, and then plug the SD card directly into the slot.
Step 1:
Use a screwdriver to remove the screws holding the SD card slot’s outer cover.
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