FCN/FCJ Autonomous Controller Functions (FCN-100/FCJ) Yokogawa

l Network (Ethernet) Specifications

Application Ethernet is used as the control network, which can be dual redundant, connecting FCNs/FCJs with various PLCs, display units and VDS. FCNs/FCJs are developed and maintained via Ethernet as well.

l Network (Serial) Specifications Serial ports can be used to link diverse devices and controllers.

Communication portfolios facilitating interconnection with display units, various programmable logic controllers, temperature controllers, and power monitors are available via a serial port.

l Guideline of Control Application Capacity

a total of the following. (1) Function blocks (POUs) Up to 512 

 • Regulator control blocks (e.g., indicator blocks, controller blocks, and manual loaders): Up to 128

 • Others (e.g., calculation blocks, switch instrument blocks, and communication POUs): Up to 384 (2) Sequence program Up to 180 kilosteps in Ladder or up to 128 sequence tables each of which has 32 condition and 32 action rows. Example of a control application with the maximum size:

 • Inputs/outputs: 96 AIs, 32 AOs, 256 DIs, and 256 DOs 

 • PID loops: 32 

 • Sequence program: 128 sequence tables 

 • Control cycle: 1 second

l Specification of FCN-100 with Duplexed CPU Modules 

 • After a failure of the CPU in service, the stand-by CPU obtains the control right instantaneously and resumes control without any influence of the CPU switchover. • When additionally installing a CPU module to an FCN with a single CPU module to configure duplexed CPU modules, such as when replacing a failed CPU module, carry out the All-program-copy (APC) command for equalization between the CPU modules. It is also possible to run the APC command automatically after CPU replacement. When the APC command is running, the control period lengthens by a second or two only during its first cycle. (1) 

 • Synchronization is periodically performed between the in-service CPU and stand-by CPU. The total processing time is hence longer than that of an FCN 100 with single CPU. • If the control application comprises multiple tasks, those tasks cannot access the same global variable.

 • The CPU module’s serial port cannot be used. 

 • Java applications cannot be run. 1: If one of the two CPUs in dual-redundant configuration is not style-3 NFCP100 CPUs, the APC command cannot be started automatically. In this case, control stops when the APC command is running and the I/O modules operate in the same way as they do when the Fallback option (can be set to ‘hold the output’ or ‘output specified values,’ for example) is selected. l Online Download Function 

 • Online download function is a feature with which control applications can be modified while a control function continues in operation. • With this feature, I/Os, variables, data types, program codes, and libraries can be added, deleted or modified.

 • Modifying the control loop during system operation does not affect other control loops. Changing a range of control loop or loop connection causes the control loop to become the MAN mode. l Implementation of Java Virtual Machine 

 • WWW server functionality: download HTML files and Java applets to Web browsers and access data in FCN-100s and FCJs 

 • E-mail transmission/reception: send and receive e-mail using SMTP and POP3 protocols, respectively support the authentication function of SMTP servers (SMTP Authentication/Pop Before SMTP) 

 • FTP client/server functionality: transfer files to/from other networking systems 

 • PPP (Point to Point Protocol) functionality: exchange data with a PC or a cellular phone via the public network such as GPRS by connecting a modem to a serial port of FCN/FCJ support the client mode and the server mode unsupport FCN-100’s serial port on one of duplexed CPU modules.

l Time Synchronization Function FCNs/FCJs enable time synchronization among equipment supporting SNTP (Simple Network Time Protocol). An FCN/FCJ can operate as an SNTP server or as an SNTP client.

l Connection to Display Unit FCNs and FCJs can connect a display unit using FA M3 Emulation Function or Modbus Communication Portfolio.

 SOFTWARE FCN-100 and FCJ can simultaneously run IEC 61131-3-compliant control applications and Java applications. Ethernet driver Real-time OS Control execution engine Control applications Java Virtual Machine Java applications I/O driver FCN/FCJ I/O modules Figure Conceptual Diagram of FCN/FCJ Software Configuration l Licenses The following licenses are required to run an FCN-100 and FCJ. FCN/FCJ Basic Software License Available in two editions: License for single-CPU FCN-100 and FCJ, and license for duplexed-CPU FCN-100. To use the FCN/FCJ Java functions, enable Java in the FCN/FCJ application software. (See 1 below) 1: For dual-redundant CPUs, FCN/FCJ Java functions cannot be used. FCN/FCJ Application Portfolio License To use application portfolios for FCNs/FCJs, respective portfolio licenses are required. For details, see Application Portfolios for FCN/FCJ, GS 34P02P20-01E. l Logic Designer Logic Designer is a tool program that runs on a computer and is used for developing control applications as tasks for an FCN/FCJ. For details, see Logic Designer, GS 34P02Q01-01E. l FCN/FCJ Simulator The simulator is designed to run control applications, which are created using the Logic Designer, on a general-purpose PC. This simulator enables users to debug control applications without using an FCN/FCJ. For details, see Logic Designer, GS 34P02Q75-01E. l Resource Configurator Resource Configurator is a tool program that runs on a computer and is used for making basic settings in an FCN/FCJ, including: