3BHE047217R0101使用区域,ABB自动化卡件
CSR的长度为16位,详见表4.2-1和4.2-2。随后,详细描述了每个控制位和状态标志的功能,在相关的编程讨论中。D0到D5选择模拟输入通道要转换。这些位只需要随机轮询或随机选择中断模式。当D9为高“1”时,所有车载A/D定时网络已清除。
当D10设置为高“一”时,可编程计时器开始计数,如果它以前被激活过已编程。
当D11设置为高“一”时,车载外部A/D启动逻辑能够接受外部触发如果D12低,则ADC编码格式为偏移二进制“零”,如果D12为高“一”,则为二的补码。单个A/D转换或转换扫描是每次将“一”写入此控件时启用位和ADC随机或扫描操作模式由D6到D8选择。
3BHE047217R0101使用区域如果该位设置为“1”,则故障指示灯熄灭,并且如果位为零,则开启。当该位设置时,模拟输入采集时间从15µs增加到28µs。该位应在上选择增益500时设置可编程增益放大器。当D9为高“1”时,所有车载A/D定时网络均为变明朗。
当D10设置为高“一”时,可编程定时器启动如果之前已编程,则计数。
当D11设置为高“一”时,车载外部A/D启动逻辑允许接受外部触发器。如果D12为低“零”或2,则ADC编码格式为偏移二进制如果D12为高“一”,则进行补码。
当读取高“一”时,该标志表示单个a/D扫描关闭所有通道已完成。仅用于扫描轮询模式。
如果该位设置为“1”,则故障指示灯熄灭,如果该位设置为“1”,则故障指示灯点亮为“零”。当读取高“一”时,该标志表示A/D转换已完成单个通道的。仅用于随机轮询模式
The CSR is 16 bits in length, and is detailed in Tables 4.2-1 and 4.2-2.
The function of each control bit and status flag is described in detail, subsequently,
in the associated programming discussions.
D0 through D5 select the analog input channel
to be converted. These bits only need to be
selected in RANDOM POLLING or RANDOM
INTERRUPT MODE.
When D9 is high "one", all on-board A/D timing
networks are cleared.
When D10 is set high "one", the Programmable
Timer starts counting if it has been previously
programmed.
When D11 is set high "one", the on-board external
A/D start logic is enabled to accept an external
trigger.
ADC coding format is offset binary if D12 is low
"zero", or two's complement if D12 is high "one".
A single A/D conversion or conversion scan is
enabled each time a "one" is written to this control
bit and an ADC RANDOM or SCANNING
OPERATING MODE is selected by D6 through D8.
The Fail LED is OFF if this bit is set to "one", and is
ON if the bit is zero.
When this bit is set the Analog Input Acquisition
time increases from 15 µs to 28 µs. This bit should
be set when a gain of 500 is selected on the
programmable gain amplifier.When D9 is high "one", all on-board A/D timing networks are
cleared.
When D10 is set high "one", the Programmable Timer starts
counting if it has been previously programmed.
When D11 is set high "one", the on-board external A/D start
logic is enabled to accept an external trigger.
ADC coding format is offset binary if D12 is low "zero", or two's
complement if D12 is high "one".
This flag when read high "one" indicates that a single A/D scan
off all channels has been completed. Used only in SCANNING
POLL MODE.
The Fail LED is OFF if this bit is set to "one", and is ON if the bit
is "zero".
This flag when read high "one" indicates that an A/D conversion
of a single channel has been completed. Used only in
RANDOM POLLING MODE.