SAJ Sununo Plus 4K-M - Chapter 6 Debugging Instructions

Sununo Plus Series
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5.5 Communication Connection
Sununo Plus 1K/1.5K/2K/2.5K/3K/3.6K/3K-M/4K-M/5K-M/6K-M is equipped with a
RS232 interface.
Figure 5.11 Pins of Nine Serial Port Cable
Pin No. Name
1DCD（Data Carrier Detect）
2RxD（Received Data）
3TxD（Transmitted Ready）
4DTR（Data Terminal）
5 GND（Signal Ground）
6DSR（Data Send Ready）
7 RTS (Request To Send)
8CTS(ClearToSend)
9 RI(Ring Indicator)
Table 5.5 Instruction of Nine Serial Port Pins
（1）RS232 can externally connect with Wi-Fi module.For more details, please refer to the
operating manual of Wi-Fi module.
（2）RS232 can externally connect with Wi-Fi module.For more details, please refer to the
operating manual of Ethernet module.
（3）RS232 can externally connect with Wi-Fi module.For more details, please refer to the
operating manual of GPRS module.
5 4 3 2 1
9 8 7 6