17
MR6DE User Manual
Making Connections
Connect to RS232 port
This machine contains two Internet access-type RS232 ports, i.e. RS232-1 and RS232-2.
Development should apply the adapter cable for conversion from Internet access to DB9 female
head. Secondary development should be performed according to the user’s protocol to realize
serial port control of this machine.
TX/RX wire sequence inside RS232-1 port and RS232-2 port of this machine is different. The
requirements for sequence of the connecting wire for conversion from Internet access to DB9 is
shown in the following table:
RS232-1
Internet access end P1 Connecting wire DB9 female head P2
Pin3-GND - Pin5-GND
Pin5-TX - Pin2-RXD
Pin8-RX - Pin3-TXD
RS232-2
Internet access end P1 Connecting wire DB9 female head P2
Pin3-GND - Pin5-GND
Pin5-RX - Pin3-TXD
Pin8-TX - Pin2-RXD
Device port
34
PC
1
1
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