HIEE400923R0001脉冲输入卡件
I因为通道参考位置是32位，所以应用程序可以将32位有符号十进制值写入输出参考。但是，程序逻辑必须将值的大小限制在+32767到-32768的范围内。超过此范围将导致符号位的错误解释和输出通道操作错误。PACSystems*RX3i系统手册第12节GFK-2314T 2019年9月带有HART通信的模拟模块534 11.4.2.2输出信道诊断参考数据：ALG728该模块可选择配置为向CPU报告信道诊断状态数据。CPU将该数据存储在为该模块配置的诊断参考地址中。此功能的使用是可选的。每个通道的诊断数据占用2个字（无论是否使用该通道）：诊断参考地址包含以下诊断数据：+0、1通道1+2、3通道2+4、5通道3+6、7通道4+8、9通道5+10、11通道6+12、13通道7+14、15通道8当诊断位等于1时，通道上出现报警或故障状态。当位等于0时，报警或故障条件不存在，或者该通道的配置中未启用检测。对于每个信道，该数据的格式为：PACSystems*RX3i系统手册第12节GFK-2314T 2019年9月带HART通信的模拟模块535 11.4.2.3模块状态数据：ALG728模块也可选择配置为向CPU返回4位模块状态数据。CPU将此数据存储在为该模块配置的32位模块状态数据参考区域中。11.4.2.3.1接线板检测模块自动检查是否存在接线板。TB LED指示该模块接线板的状态。当接线板存在时，它是绿色的，如果没有，它是红色的。当从系统中配置的模块插入或移除接线板时，故障会自动记录在CPU I/O故障表中。故障类型为Field fault（现场故障），故障描述表明故障是“接线板丢失”还是“接线板增加”。如果在存储配置时不存在接线板，则会记录“接线板丢失”故障。模块状态参考的第2位指示接线板的状态。要启用模块状态报告，必须配置模块状态参考。运行期间，PLC必须处于I/O启用模式，以便在参考存储器中扫描和更新当前模块状态。11.4.3现场接线：ALG728下表列出了模块的接线连接。没有屏蔽端子。对于屏蔽，请沿背板底部将电缆屏蔽连接到接地棒。变送器中提供的M3螺纹孔如下图所示。11.4.4.1.1连接HART输出设备通道I输出通用HART设备+-图324：连接HART双线输出设备11.4.4.1.2将HART输入变送器连接至输出通道在此类应用中，HART输出模块IC695ALG728，无法从HART设备读取模拟电流水平。但是，模块可以与HART信号通信。
I Because the channel reference location is 32 bits, it is possible for the application program to write 32-bit signed decimal values to the output reference. However, the program logic must restrict the magnitude of the value to the range +32767 to –32768. Exceeding this range will result in misinterpretation of the sign bit, and incorrect output channel operation. PACSystems* RX3i System Manual Section 12 GFK-2314T Sept. 2019 Analog Modules with HART Communications 534 11.4.2.2 Output Channel Diagnostic Reference Data: ALG728 The module can optionally be configured to report channel diagnostics status data to the CPU. The CPU stores this data at the Diagnostic Reference Address configured for this module. Use of this feature is optional. The diagnostics data each channel occupies 2 words (whether the channel is used or not): Diagnostic Reference Address Contains Diagnostics Data for: +0, 1 Channel 1 +2, 3 Channel 2 +4, 5 Channel 3 +6, 7 Channel 4 +8, 9 Channel 5 +10, 11 Channel 6 +12, 13 Channel 7 +14, 15 Channel 8 When a diagnostic bit equals 1, the alarm or fault condition is present on the channel. When a bit equals 0 the alarm or fault condition is either not present or detection is not enabled in the configuration for that channel. For each channel, the format of this data is: PACSystems* RX3i System Manual Section 12 GFK-2314T Sept. 2019 Analog Modules with HART Communications 535 11.4.2.3 Module Status Data: ALG728 The module can also optionally be configured to return 4 bits of module status data to the CPU. The CPU stores this data in the 32-bit Module Status Data reference area configured for this module. 11.4.2.3.1 Terminal Block Detection The module automatically checks for the presence of a Terminal Block. The TB LED indicates the state of the terminal block of this module. It is green when the Terminal Block is present or red if it is not. Faults are automatically logged in the CPU I/O Fault table when the terminal block is inserted or removed from a configured module in the system. The fault type is Field Fault and the fault description indicates whether the fault is a "Loss of terminal block" or an "Addition of terminal block". If a Terminal Block is not present while a configuration is being stored, a "Loss of terminal block" fault is logged. Bit 2 of the Module Status Reference indicates the status of the terminal block. To enable Module Status reporting, the Module Status Reference must be configured. During operation, the PLC must be in an I/O Enabled mode for the current Module Status to be scanned and updated in reference memory. 11.4.3 Field Wiring: ALG728 The following table lists wiring connections for the module. There are no shield terminals. For shielding, tie cable shields to the ground bar along the bottom of the backplane. M3 tapped holes are provide in the transmitters are displayed in the following figure. 11.4.4.1.1 Connecting a HART Output Device Channel I out Common HART Device + - Figure 324: Attaching HART 2-Wire Output Device 11.4.4.1.2 Connecting a HART Input Transmitter to an Output Channel In this type of application, the HART output module, IC695ALG728, cannot read the analog current level from the HART device. However, the module can communicate with the HART signal.
