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Schumacher 1491-1500P数字流量控制器
内存清除方法当FA-M3编程工具WideField3不可用时（仅适用于F3SP21/22/25/28/35/38/53/58/59）如果在不支持该波特率的PC98系列个人计算机的早期版本上运行梯形图支持程序M3时，错误地将CPU端口的波特率配置为19200 bps，通信链路被禁用，程序不再可用。如果出现这种情况，请按照以下说明进行操作。在第5个或更高插槽中安装顺序CPU模块，然后打开电源。确保RDY灯暂时熄灭，然后再次亮起后，关闭电源。这将完全清除CPU内存，并将模块恢复到出厂设置。维护和检查A5.1更换模块备用模块务必备有备用模块，以便针对FA-M3中的故障采取即时对策。更换模块的步骤更换任何模块之前，务必关闭电源。更换模块时，不要更改模块的类型和位置。注意模块更换出现错误时，在更换模块之前执行以下检查：-检查负载是否符合规格。-检查浪涌保护器（如有）是否正常工作检查布线错误，例如二极管极性方向错误。警告：当外部接线有问题、未安装浪涌保护器或二极管连接反极性时，更换任何模块后，FA-M3将再次出现故障。更换模块前，确保解决外部设备的问题。
日常检查
例行检查包括用于确定当天运行中是否可能发生任何故障的最低级别检查。正确遵守这些程序将使您能够保持FA-M3的稳定运行。检查所需工具-飞利浦和平刃螺丝刀-万用表或数字电压表-温度计-湿度计全系统模块安装限制模块安装限制包括对整个系统中可以安装的模块数量的限制，除了可以安装的相应CPU和I/O模块的数量限制之外。本附录说明了如何检查系统是否符合模块安装的系统范围限制。附录A1.1检查是否符合模块安装限制列出您将使用的CPU和I/O模块，并按照附录图A1.1中所示的程序检查您的系统是否符合每个限制。除非您的系统满足所有这些限制，否则无法保证系统运行。确定所有模块（不包括电源、光纤FA总线、2型光纤FA母线和2型FA总线模块）占用的插槽总数W。然后检查W的值是否符合最大插槽数的限制。插槽的最大数量取决于所用CPU模块的类型及其组合。如果组合使用F3SP21/22/25/28/35/38/53/58/59/66/67/71/76、F3FP36、F3BP20和F3BP30模块，系统最多可添加7个子单元当F3SP21/22/25/28/35/38/53/58/59/66/67/71/76、F3FP36、F3BP20和F3BP30模块组合使用时，插槽的最大数量为120。然而，当16个插槽基本模块与主机和每个子单元一起使用时，这个数字才有效，七个子单元通过2型光纤FA总线和2型FA总线模块以菊花链或环路拓扑连接。
Methods of memory clearance
when the FA-M3 Programming Tool WideField3 is not available (for F3SP21/22/25/28/35/38/53/58/59 only) If you mistakenly configure the baud rate of the CPU port to 19200 bps when running the Ladder Diagram Support Program M3 on an earlier version of the PC98 series of personal computers that does not support that baud rate, the communication link is disabled and the program becomes no longer usable. If this situation happens, follow the instructions given below. Install a sequence CPU module in the 5th or higher slot and turn on the power. After making sure the RDY lamp has gone out momentarily and then comes on again, turn off the power. This clears the CPU memory completely, and restores the module to its factory setting.Maintenance and Inspection A5.1 Replacing Modules Spare Modules Always have spare modules on hand for immediate countermeasures against failures in the FA-M3. Procedure for Replacing a Module Be sure to turn off the power before replacing any module. When replacing a module, do not change the type and location of the module.Note the module replacement Perform the following checks before replacing a module when there is an error: - Check whether the load conforms to the specifications. - Check whether the surge protector, if any, is functioning normally. - Check for cabling errors such as wrong polarity orientation of a diode. CAUTION The FA-M3 will fail again after replacing any module when there is a problem with the external wiring, no surge protector is installed or a diode is connected in the reverse polarity. Be sure to solve problems with the external equipment before replacing the module.
Routine Inspection
Routine inspection comprises the minimum level of checks used to determine whether any fault might occur in the day’s operation. Observing these procedures properly will enable you to maintain stable FA-M3 operation.Tools Required for Inspection - Philips and flat-blade screwdrivers - Multi-meter or digital voltmeter - Thermometer - Humidity gauge System-wide Restrictions on Module Installation Restrictions on module installation include a limitation on the number of modules that can be installed in the system as a whole, in addition to a limitation on the number of respective CPU and I/O modules that can be installed. This appendix explains how to check whether or not your system complies with system-wide restrictions on module installation. Appendix A1.1 Checking Compliance with Restrictions on Module Installation List the CPU and I/O modules you will use and follow the procedure shown in Appendix Figure A1.1 to check whether or not your system complies with each restriction. System operation is not guaranteed unless your system satisfies all of these restrictions.Determine the total sum W of slots occupied by all modules excluding the power supply, fiber-optic FA-bus, fiber-optic FA-bus type 2, and FA-bus type 2 modules. Then check that the value of W complies with restrictions placed by the maximum number of slots. The maximum number of slots varies depending on the types of CPU modules used and their combinations. If F3SP21/22/25/28/35/38/53/58/59/66/67/71/76, F3FP36, F3BP20 and F3BP30 modules are used in combination, a maximum of 7 subunits can be added to the system. - When F3SP21/22/25/28/35/38/53/58/59/66/67/71/76, F3FP36, F3BP20, and F3BP30, modules are used in combination, the maximum number of slots amounts to 120. This number is only effective however, when 16-slot base modules are used with both the main unit and each subunit, and the seven subunits are connected in a daisy-chain or loop topology through fiber-optic FA-bus type 2 and FA-bus type 2 modules.
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