PFEC12 工控系统模块，采用RS-485双绞线、双线电缆或光缆传输，传输速率从9.6kbps到12Mbps。各主站间令牌传递，主站与从站间为主从传送。支持单主或多主系统，总线上最多站点数为126。采用点对点数据传送或广播控制指令通信。循环主从用户数据传送和非循环主数据传送。控制指令允许输入和输出同步。同步模式为输出同步；锁定模式为输入同步。DP主站和DP从站间的循环用户有数据传送。各DP从站的动态激活和可激活。DP从站组态的检查。强大的诊断功能，三级诊断信息。输人或输出的同步。通过总线给DP从站赋予地址。通过总线对DP主站进行配置，每DP从站的输入和输出数据最大为246字节。
SPFEC12
所有信息的传输按海明距离HD4进行，对DP从站的输入/输出进行存取保护。DP主站上带可变定时器的用户数据传送监视。DP从站是进行输入和输出信息采集和发送的外围设备，是带二进制值或模拟量输入输出的I/O设备、驱动器、阀门等。经过扩展的PROFIBUS-DP诊断能对故障进行快速定位。诊断信息在总线上传输并由主站采集。诊断信息分3级：本站诊断操作，即本站设备的一般操作状态，如温度过高、压力过低；模块诊断操作，即一个站点的某具体I/O模块故障；通道诊断操作，即一个单独输人/输出位的故障。
SPFEC12
The PFEC12 industrial control system module uses RS-485 twisted pair, dual wire cable, or optical cable transmission, with transmission rates ranging from 9.6kbps to 12Mbps. Token transmission between master stations, and master-slave transmission between master and slave stations. Supports single master or multi master systems, with a maximum of 126 stations on the bus. Use point-to-point data transmission or broadcast control command communication. Circular master slave user data transfer and non circular master data transfer. Control instructions allow for synchronization of input and output. The synchronization mode is output synchronization; The locking mode is input synchronization. The cyclic users between the DP master station and DP slave station have data transmission. Dynamic activation and activability of each DP slave station. Check the configuration of the DP slave station. Powerful diagnostic function, three-level diagnostic information. Synchronization of input or output. Assign an address to the DP slave station through the bus. Configure the DP master station through the bus, with a maximum input and output data of 246 bytes per DP slave station.
SPFEC12
All information transmission is carried out according to the Hamming distance HD4, providing access protection for the input/output of the DP slave station. User data transmission monitoring with variable timer on DP master station. DP slave station is a peripheral device that collects and sends input and output information. It is an I/O device, driver, valve, etc. with binary or analog input and output. The extended PROFIBUS-DP diagnosis can quickly locate faults. Diagnostic information is transmitted on the bus and collected by the master station. Diagnostic information is divided into three levels: local diagnostic operation, which refers to the general operating status of local equipment, such as high temperature and low pressure; Module diagnosis operation, that is, a specific I/O module fault at a site; Channel diagnostic operation, i.e. a fault in a single input/output bit.
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