RS-485 多站串口连接 对于多站配置, 主机设备被配置为主站其他一个或多个 PLC 被配置为从站。主站和任何从站之间远距离不能超过 4000 英尺 (1200 米)。下图假定高品质电 缆及适度噪声环境。 菊花链或多路配置时使用 RS 485 多 8 个从站。RS 485 电缆必须包括握手信号线且使用之前的线型号。
AMPROBE LP 3100T VARIABLE SPEED RECORDING PYROMETER
AMPROBE INSTRUMENTS P3100 RECORDING PYROMETER
PARKER F06F14BC FILTER, NIB
PACIFIC PN20 LINEAR PILLOW BLOCK BEARING, NNB
PACIFIC PN20 LINEAR PILLOW BLOCK BEARING, NIB
BUSSMANN 250A SEMI-CONDUCTOR FUSES FWP-250A , LOT O
NUMATICS R30R-04 FILTERS, NNB
ITW RANSBURG EPS-4300 DRIVE BOARD, NNB
ITW RANSBURG XEPS-4301 OUTPUT, NIB
FESTO ADVUL-40-40-PA COMPACT CYLINDER, NIB
ALLEN BRADLEY 1485P-P8T5-T5 8 PORT DEVICEBOX, NIB
FANUC AXIS CONTROL CIRCUIT BOARD PCB A16B-2200-0252/?05C
VIATRAN XC 9863 HYDRA-MATIC PRESSURE TRANSDUCER 15 VDC
ALLEN BRADLEY MINI PLC-2/05 PROCESSOR WITH POWER SUPPLY
