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公开(公告)号：US4521871A
公开(公告)日：1985-06-04
申请号：US367594
申请日：1982-04-12
CPC分类号： G06F11/2038 , G05B19/058
摘要： An active programmable controller services I/O racks which contain circuits that interface with sensing devices and operating devices on a machine being controlled. A back-up programmable controller monitors this I/O data to maintain a current I/O image table in its memory. Other status data is coupled to the back-up controller from the active controller through a peer-to-peer communications link. If a malfunction occurs in the active controller, the back-up controller is signaled to switch to the active mode in which it assumes control of the operating devices on the machine being controlled.
摘要翻译： 主动可编程控制器服务I / O机架，其中包含与被控制的机器上的感测装置和操作装置连接的电路。 备用可编程控制器监视此I / O数据，以保持其存储器中的当前I / O映像表。 其他状态数据通过对等通信链路从主动控制器耦合到备用控制器。 如果主动控制器发生故障，则备用控制器发出信号，以切换到主动模式，在此模式下，控制机器上的操作设备进行控制。
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公开(公告)号：US4442504A
公开(公告)日：1984-04-10
申请号：US313365
申请日：1981-10-21
CPC分类号： G06F13/362 , G05B19/052 , G06F13/124 , G06F13/22 , G05B2219/1103 , G05B2219/1159 , G05B2219/13017 , G05B2219/15011 , G05B2219/15018 , G05B2219/15078
摘要： A programmable controller is formed by connecting separate functional modules to a common backplane bus. A bus arbitration scheme and a message handling technique are disclosed to tightly couple the functional modules together to form an efficient programmable controller. A number of improvements to the CPU module and I/O scanner module are disclosed to further improve the performance of the resulting system.
摘要翻译： 可编程控制器通过将单独的功能模块连接到公共背板总线而形成。 公开了总线仲裁方案和消息处理技术，以将功能模块紧密耦合在一起以形成有效的可编程控制器。 公开了对CPU模块和I / O扫描器模块的许多改进，以进一步提高所得系统的性能。
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公开(公告)号：US4254473A
公开(公告)日：1981-03-03
申请号：US007554
申请日：1979-01-29
CPC分类号： G06F11/0763 , G05B19/054 , G06F11/00 , G06F13/38 , G05B2219/1103 , G05B2219/1181 , G05B2219/15018 , G05B2219/15048
摘要： A rack adapter for a programmable controller is included in each of four remotely located I/O interface racks that are connected in series to a central processor. The rack adapter includes a rack interface processor under program control which converts serial data received from the central processor to parallel data that is written into I/O modules in its rack. The rack interface processor also converts parallel data from I/O modules to serial data, which is sent back to the central processor through a select data out circuit in proper sequence with data from the other racks. The rack interface processor initiates the decontrol of machines connected to the four racks if a major transmission fault occurs, but the rack interface processor is tolerant to transmission errors caused by electrical noise. A dual-frequency clock drives the rack interface processor, and interface circuitry which is operable at two bit-transmission rates connects the rack interface processor to the communication channel, which can range up to 10,000 feet from the central processor.
摘要翻译： 四个远程位置的I / O接口机架中的每一个均包含可编程控制器的机架式适配器，这些I / O接口机架与中央处理器串联。 机架适配器包括一个程序控制下的机架接口处理器，它将从中央处理器接收的串行数据转换为写入其机架中的I / O模块的并行数据。 机架接口处理器还将I / O模块的并行数据转换为串行数据，通过选择数据输出电路以与其他机架的数据相适应的顺序将其发送回中央处理器。 如果发生主要传输故障，机架接口处理器启动对连接到四个机架的机器的控制，但是机架接口处理器能够承受由电气噪声引起的传输错误。 双频时钟驱动机架接口处理器，并且可以以两位传输速率操作的接口电路将机架接口处理器连接到通信通道，该通信通道可以距离中央处理器高达10,000英尺。
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公开(公告)号：US4404651A
公开(公告)日：1983-09-13
申请号：US242048
申请日：1981-03-09
申请人： Raymond A. Grudowski
发明人： Raymond A. Grudowski
CPC分类号： G05B19/054 , G05B2219/1103 , G05B2219/15018
摘要： A programmable controller has a scanner module that couples a main processor through two multidrop serial data channels to a relatively large number of remotely located I/O interface racks. The main processor executes a control program to examine input status data coupled from I/O devices on a controlled system through the I/O interface racks and determines output status data which is coupled through the I/O interface racks to control output devices on the controlled system. The scanner circuit encodes a stream of output status data by generating an output mask work and the adapter circuit encodes a stream of input status data by generating an input mask word, the mask words being appended to streams of status data that are coupled to and from each rack in serial data messages. I/O status data that is selected for transmission over the serial data links is limited to data that has changed since the last time its associated I/O rack has been scanned, and refresh data that is periodically coupled to or from each rack, whether such status data has changed or not.
摘要翻译： 可编程控制器具有扫描器模块，其将主处理器通过两个多点串行数据信道耦合到相对大量的位于远程的I / O接口机架。 主处理器执行一个控制程序，以通过I / O接口机架检查受控系统上的I / O设备耦合的输入状态数据，并确定通过I / O接口机架耦合的输出状态数据，以控制输出设备 受控系统。 扫描器电路通过产生输出掩模工作来编码输出状态数据流，并且适配器电路通过生成输入掩码字来对输入状态数据流进行编码，掩码字被附加到耦合到和从...的状态数据流 每个机架都有串行数据消息。 选择用于通过串行数据链路进行传输的I / O状态数据仅限于自上次关联的I / O机架被扫描以来发生变化的数据，并刷新周期性耦合到每个机架的数据，无论是否 这样的状态数据已经改变了。
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公开(公告)号：US4200915A
公开(公告)日：1980-04-29
申请号：US893252
申请日：1978-04-05
CPC分类号： G05B19/056 , G05B2219/1159 , G05B2219/13013 , G05B2219/15018 , G05B2219/15049
摘要： A microprocessor based program loader is connected to the memory data bus and memory address bus of a programmable controller. The program loader is responsive to commands entered through a keyboard to load and edit the programmable controller control program. A mode switch associated with the programmable controller provides a number of selectable positions which determine the mode of operation of the programmable controller and the functions that can be performed by the program loader. One of the positions on this mode switch enables the program loader through a control line to assume control of the mode selection. The operator can thus control the mode of operation through the program loader keyboard which may be located remotely from the programmable controller.
摘要翻译： 基于微处理器的程序加载器连接到可编程控制器的存储器数据总线和存储器地址总线。 程序加载器响应于通过键盘输入的命令来加载和编辑可编程控制器控制程序。 与可编程控制器相关联的模式切换器提供多个可选择的位置，这些位置决定了可编程控制器的操作模式以及可由程序加载器执行的功能。 该模式开关中的一个位置使程序加载器能够通过控制线来控制模式选择。 因此，操作者可以通过程序加载器键盘来控制操作模式，该程序加载器键盘可以远离可编程控制器。
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公开(公告)号：US4319338A
公开(公告)日：1982-03-09
申请号：US102970
申请日：1979-12-12
IPC分类号： G05B15/02 , G05B19/05 , G05B19/408 , G06F13/22 , G06F13/368 , G06F13/372 , G06F13/40 , G06F19/00 , H04L12/00 , H04L12/28 , H04L25/00 , H04L25/02 , G06F3/00
CPC分类号： G06F13/372 , G05B19/052 , G06F13/225 , G06F13/368 , G05B2219/1105 , G05B2219/1201 , G05B2219/15018
摘要： An industrial communications network includes microprocessor-based interface circuits which each connect a controller such as a programmable controller to a high speed serial data link. Each interface circuit connects to the data link and its associated controller, and each is operable to receive messages on the data link directed to its associated controller. In addition, each interface circuit can assume mastership of the communications network when the existing master generates a poll command indicating it is ready to relinquish mastership. As a result, the communications network will continue to function even though one or more controller or their associated interface circuits become inoperable.
摘要翻译： 工业通信网络包括基于微处理器的接口电路，每个接口电路将诸如可编程控制器的控制器连接到高速串行数据链路。 每个接口电路连接到数据链路及其相关联的控制器，并且每个接口电路可操作以在指向其相关控制器的数据链路上接收消息。 另外，当现有主机产生一个表明它准备放弃主管权的轮询命令时，每个接口电路可以承担通信网络的掌握。 结果，即使一个或多个控制器或其相关的接口电路变得不可操作，通信网络将继续运行。
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公开(公告)号：US4455621A
公开(公告)日：1984-06-19
申请号：US328428
申请日：1981-12-07
CPC分类号： G06F13/362 , G05B19/052 , G06F13/124 , G06F13/22 , G05B2219/1103 , G05B2219/1159 , G05B2219/13017 , G05B2219/15011 , G05B2219/15018 , G05B2219/15078
摘要： A programmable controller includes a memory which stores an I/O image table and a data table. An I/O scanner module updates the I/O image table with the status of I/O devices connected to the programmable controller. The processor executes a control program to perform logical and arithmetic operations on the data in the data table. Such operations may be performed on data of different types and any necessary data conversions are performed automatically. Also, such operations may be performed on entire data files without degrading the response time of the programmable controller.
摘要翻译： 可编程控制器包括存储I / O图像表和数据表的存储器。 I / O扫描器模块将I / O映像表更新为连接到可编程控制器的I / O设备的状态。 处理器执行控制程序以对数据表中的数据执行逻辑和算术运算。 可以对不同类型的数据执行这种操作，并且自动执行任何必要的数据转换。 此外，可以对整个数据文件执行这样的操作，而不会降低可编程控制器的响应时间。
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公开(公告)号：US4165534A
公开(公告)日：1979-08-21
申请号：US911520
申请日：1978-06-01
CPC分类号： G05B19/052 , G05B2219/1103 , G05B2219/1159 , G05B2219/1204 , G05B2219/13128 , G05B2219/15048 , G05B2219/15127
摘要： An eight-bit microprocessor sequentially reads controller type instructions from a memory and applies the operation codes of selected ones of the instructions to a hardwired Boolean processor. The microprocessor also couples status words between an I/O image table stored in the memory and the I/O interface racks which connect the programmable controller to the machine being controlled. In general, those controller type instructions which are word oriented are executed by the microprocessor and those which are single-bit oriented are executed by the Boolean processor. The Boolean processor is operable in combination with the microprocessor to examine selected status bits in the I/O image table and to set selected status bits therein to a logic state which is determined in part by the state of the examined status bits.
摘要翻译： 8位微处理器从存储器中顺序读取控制器类型的指令，并将所选指令的操作代码应用到硬连线布尔处理器。 微处理器还将存储在存储器中的I / O映像表和将可编程控制器连接到被控制的机器的I / O接口机架之间的状态字进行耦合。 通常，面向对象的那些控制器类型指令由微处理器执行，并且由单位定向的那些指令由布尔处理器执行。 布尔处理器与微处理器结合操作以检查I / O映像表中的所选状态位，并将其中的选定状态位设置为部分由被检查状态位的状态确定的逻辑状态。
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9.发明授权Asynchronous coupling of data between a word-oriented I/O module and the memory of a programmable controller 失效面向字的I / O模块与可编程控制器的存储器之间的数据异步耦合
公开(公告)号：US4104731A
公开(公告)日：1978-08-01
申请号：US696138
申请日：1976-06-14
CPC分类号： G05B19/054 , G05B2219/1125 , G05B2219/14144 , G05B2219/15078
摘要： A programmable controller includes a controller processor which operates in response to a control program to transfer command words stored in a data table to an input/output image table in the controller memory. An input/output scanner circuit operates asynchronously with respect to the controller processor to couple command words in the output image table to one or more of a plurality of word-oriented I/O modules and to couple command words from an I/O module to the input image table. A pulse module is described for receiving such command words and controlling the operation of a stepping motor and an analog output module is described which converts a digital number in such command words to an analog output signal.
摘要翻译： 可编程控制器包括控制器处理器，其响应于控制程序操作以将存储在数据表中的命令字传送到控制器存储器中的输入/输出图像表。 输入/输出扫描器电路相对于控制器处理器异步地操作，以将输出图像表中的命令字耦合到多个面向字的I / O模块中的一个或多个，并将命令字从I / O模块耦合到 输入图像表。 描述了用于接收这种命令字并控制步进电机的操作的脉冲模块，并且描述了将这种命令字中的数字数字转换为模拟输出信号的模拟输出模块。
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