HONEYWELL CC-TCF901占位模块
每个通道可以配置为活动或非活动。
如果通道处于非活动状态，则其输出为0V，且通道的模拟输出数据不为
习惯于对于以下信道，信道的报警（可选离散输入）数据不会更新
已配置为非活动。CC-TCF901底板
如果通道配置从激活更改为非激活，模块将停止
更新其报警数据。仍然可以使用模块的配置的离散输出位。
本地输出默认值
除了能够为模块的
BIU中的数据、模块的本地输出默认值也是可配置的。这些模块
本地默认值确定模块是否将实际输出电压设置为零伏
如果发生模块错误，则保留其最后的值。
保持最后状态
如果通道的输出默认值为保持最后状态，并且存在用户电源，则通道
在以下情况下，输出保持其最后一个值：
1、BIU复位模块。
2、在BIU超时期间内，未收到来自BIU的输出数据。
3、背板电源丢失。
4、模块的看门狗计时器过期。
输出将继续保持其最后状态，直到模块从接收到输出数据
BIU或直到用户电源断开。
Each channel can be configured as either active or inactive.
If a channel is Inactive, its output is 0V and the analog output data for the channel is not
used. Alarm (optional discrete input) data for the channel is not updated for a channel that
has been configured as Inactive.
If the configuration of a channel is changed from Active to Inactive, the module stops
updating its alarm data. Pre-existing alarms can still be cleared using the module’s
configured discrete output bits.
Local Output Defaults
In addition to being able to configure data defaults of zero or hold last state for the module’s
data in the BIU, local output defaults for the module are also configurable. These module
local defaults determine whether the module will set the actual output voltages to zero volts
or hold their last values if a module error occurs.
Hold Last State
If the output default of a channel is Hold Last State and user power is present, the channel
output holds its last value if:
1. The BIU resets the module.
2. No output data is received from the BIU within the BIU Timeout period.
3. Backplane power is lost.
4. The module’s watchdog timer expires.
Outputs will continue to hold their last states until the module receives output data from the
BIU or until user power is removed.
