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TRICONEX 3700
TRICONEX 3700
目前较为常用的RS232串口有9针D形串口[DB9]和25针D形串口[DB25],通信距离为[15m]。两台设备的距离较近时,可以用232电缆线将它们的232串口直接相连;若距离较远,可通过调制解调器(MODEM)相连。
RS232接口——
●采用“负逻辑”——输出端用+5V~+15V表示[逻辑0],-5V~-15V表示[逻辑1]。
●采用“单端驱动”——通过数据发送端[TD]输出驱动电平,并以信号地GND为参考点。
●采用“单端接收”——通过数据接收端[RD]输入接收电平,并以信号地GND为参考点。
RS232三线制——
公司 名称:厦门泰尼电气有限公司
固定 电话:联 系 人:张亮
传 真:【请备注“张亮”收】
商 务 Q Q:3
手 机:
1
Q Q 邮 箱:@qq.com
需要可以联系给你满意的价格
公司地址:厦门市海沧区海沧街道滨湖一里7号2008室
能实现[点对点双向通信],需要3根通信线,主方的数据发送端[TD]与从方的数据接收端[RD]相连,主方的数据接收端[RD]与从方的数据发送端[TD]相连,两方的信号地[GND]直接相连。
RS232使用注意事项——
RS232串口不能直接与RS485串口相连——因为它们的电气标准不相同;市面上提供各种串口转换器,必须通过转换器才能连接。另外,不要带电插拨串口,插拨时至少有一端是断电的,否则容易损坏串口。
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