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ACN6340120500000000902控制器
如果检测到错误比较，则输出10打开，40010将包含该位错误如下图所示。这些错误位存储在R-T功能块的错误表。MBIT功能块设置相同矩阵B中的位，因此在每次扫描时，故障输入不会放入错误表中。B863–132 24 Vdc输入模块检测并将开关输入信号转换为PLC使用的逻辑电压电平。此模块检测并报告断线故障。该模块设计用于安全应用，因此它可以监控现场接线。此模块满足连接诊断需要的应用程序对流程很重要。逻辑侧LED指示写入的逻辑状态状态表A位于模块后部的四位DIP开关（见下图）为用于选择断线测试。每个单独的开关都与四个开关中的一个相关八个输入点组成的组。
例如，当设置为关闭时，DIP开关位置#1检测到断线故障
第1组，依此类推；设置为打开时，不会报告任何故障。
在线路测试模式下操作模块时，只应使用二进制文件。不要使用BCD。
线路测试双列直插式开关设置如下所示。位于模块后部的四位DIP开关（见下图）为用于选择断线测试。
每个单独的开关都与四个开关中的一个相关八个输入点组成的组。
例如，当设置为关闭时，DIP开关位置#1检测到断线故障第1组，依此类推；设置为打开时，不会报告任何故障。
在线路测试模式下操作模块时，只应使用二进制文件。不要使用BCD。
线路测试双列直插式开关设置如下所示。配置后，此模块显示为B863模块。这意味着模块需要四个16位字（1x寄存器），如数据寄存器图所示在下面前两个单词包含输入点的状态。第二个单词包含现场接线的状况。如果在输入端检测到断线点，然后在输入寄存器（1x+32）的位置显示一个1。当出现故障时是固定的，则位中出现零。1表示检测到故障，而0指示该输入点的正常操作。电阻器连接必须在有源设备端安装上拉电阻器才能使用B864输出单元上拉电阻的值取决于连接到数据总线，如下所述。每个输出满足0.4 V逻辑低时最大16 mA，逻辑高时最小3.3 V。如果超过电流限制，应调整上拉电阻值在规范范围内；否则，可能会获得虚假结果。下图显示了电阻器在设备上的连接方式终止对于由16条数据线组成的单个设备，需要16个1K电阻，或，一个1 K电阻/数据线。当附加设备添加到数据总线时上拉电阻器的电阻必须增加1K。换句话说，如果两个设备使用时，上拉电阻必须为2K，三个设备需要3K上拉，以此类推在上，每个数据线最多8个设备需要8k上拉。
上拉电阻器连接
Application Example 2
If a miscompare is detected then output 10 goes ON and 40010 will contain the bit with the error as shown in the following illustration. These error bits are stored in an error table through the R-T function block. The MBIT function block sets the same bit in matrix B so the input at fault is not placed into the error table on every scan.The B863–132 24 Vdc input module senses and converts switched input signals into logic voltage levels used by the PLC. This module senses and reports broken wire faults. The module is designed for safety applications whereby it monitors essential field wiring. This module satisfies applications where connectivity diagnostics are important to the process. A logic side LED indicates the logic state that is written into the state table A four–position DIP switch located on the rear of the module (see diagram below) is used to select broken wire testing. Each individual switch relates to one of the four groups of eight input points. For example, DIP-Switch position #1 when set to off senses for broken wire faults for group 1 and so on; when set to on no fault is reported. Only Binary should be used when operating module in line test mode. Do not use BCD. The line test dip-switch settings are shown below.This module appears as a B863 module when configured. This means the module requires four 16–bit words (1x registers), as shown in the data registers diagram below. The first two words contains the state of the input points. The second two words contain the condition of the field wiring. If a broken wire is detected on input point, then a one is displayed in input register (1x+32) at its position. When the fault is fixed, a zero appears in the bit. A one indicates a detected fault, whereas, a zero indicates normal operation of that input point.
Resistor Connection
Pull-up resistors must be installed at the active device end to use the B864 output module. The value of the pull-up resistor depends upon the number of devices that are attached to the data bus, as explained below. Each output meets 0.4 V maximum at 16 mA for a logic low and 3.3 V minimum at 16 mA for a logic high. If the current limit has been exceeded, the pull-up resistor values should be adjusted within specification; otherwise, spurious results may be obtained. The following illustration indicates how the resistors are connected at the device end. For a single device consisting of 16 data lines, 16 1 K resistors are required, or, one 1 K resistor/data line. As additional devices are added to the data bus, the value of the pull-up resistor must be increased by 1 K. In other words, if two devices are used, the pull-up resistor must be 2 K, three devices require a 3 K pull-up, and so on, with the maximum number of 8 devices requiring 8 k of pull-up for each data line. Pull-up resistor connection
