UT3200 Series User Manual
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Steps:
1.
When Setup, System config and Channel are set up, press FILE button to save the
current setting
2.
Move the cursor key to specific line, press SAVE button and then use cursor key to enter
file name. Example “UNIT” (Figure 8-1-1 for reference)
3.
Use Function button to choose SAVE, RECALL, RESET
Function button
Description
SAVE
Save the current setting
RECALL
Recall the saved settings
RESET
Delete settings
9. COM MODE
9.1 RS-232C
You can use UNI-T RS-232 DB-9 serial communication line to connect the RS-232
interface of a controller (such as PC and PLC). The serial port is RS-232 standard TXD
(transmit external data) RXD (receive external data) and GND (signal ground) lines.
Hardware handshake CTS and RTS lines are not used.
Attention: Only UNI-T DB-9 cable (null modem) can be used. The cable length should
not exceed 2 meters.
NAME
DB-25
DB-
9
NOTE
RS-232 Interface
DCD
8
1
NC
RXD
3
2
Data
sender
TXD
2
3
Data
receiver
DTR
20
4
NC
GND
7
5
Ground
wire
DSR
6
6
NC
RTS
4
7
NC
CTS
5
8
NC
Figure 9-1 RS-232 Interface and connector