EPRO PR9376/010-011前置器,PR9376/010-011使用教程
输入/输出扩展器总线接口支持通信
在处理器模块和HSS模块之间。该通信信道是一个八位并行数据总线，具有两个控制线。贝利设计的集成电路执行
用于连接数据和状态的通信协议信息传输至处理器模块。它执行地址比较、读/写选通生成，并包含总线驱动程序和接收器。
EPRO PR9376/010-011前置器输入/输出扩展器总线地址通过设置HSS模块上的DIP开关。地址字节位于每个数据传输。输入/输出扩展器总线集成电路执行允许数据在I/O上传输之前的地址比较扩展器总线。如果地址匹配，MFP模块可以输入/输出扩展器总线的选通数据。MFP模块通过输入/输出扩展器总线向HSS模块发送以下信息和命令接口：
•职位需求。
•LVDT频率。
•控制器死区。
•LVDT错误时的阀门动作。
•块输出显示单元。
•校准差分电压值。
•解调器和比例增益值。
•硬手动模式启用。
•校准/操作模式选择。
•校准进入/保持状态。
•校准冲程时间。
•校准周期数。
•空检查请求。
The I/O expander bus interface enables communication
between the processor module and the HSS module. This communication channel is an eight-bit parallel data bus with two
control lines. A Bailey designed integrated circuit performs the
communications protocol for interfacing the data and status
information to the processor module. It performs address compare, read/write strobe generation and contains bus drivers
and receivers.
The I/O expander bus address is selected by setting a
dipswitch on the HSS module. The address byte precedes every
data transfer. The I/O expander bus integrated circuit does an
address comparison before allowing data to transfer on the I/O
expander bus. If the addresses match, the MFP module can
strobe data to or from the I/O expander bus.The MFP module sends the following information and commands to the HSS module by way of the I/O expander bus
interface:
• Position demand.
• LVDT frequency.
• Controller deadband.
• Valve action on LVDT error.
• Block output display units.
• Calibration differential voltage values.
• Demodulator and proportional gain values.
• Hard manual mode enable.
• Calibrate/operate mode select.
• Calibrate go/hold status.
• Calibration stroke time.
• Number of calibration cycles.
• Null check request.
