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7 APPLICATION FUNCTIONS 7- 1 to 7-44
7.1 Transient Transmission Function (Non-Periodical Communication) ..................................................... 7- 2
7.1.1 Link Dedicated instruction ................................................................................................................ 7- 3
(1) Reading/writing remote I/O station intelligent function module buffer memory
(Z(P).REMFR/ Z(P).REMTO)........................................................................................................... 7- 3
7.2 Remote I/O Station System Monitor ....................................................................................................... 7- 9
7.3 Device Test for Remote I/O Station ........................................................................................................ 7-10
7.4 Multiplex Transmission Function (Optical Loop System) ...................................................................... 7-12
7.5 Return Sequence Station Number Setting Function.............................................................................. 7-13
7.6 Reserved Station Function ..................................................................................................................... 7-13
7.7 Interrupt Settings ..................................................................................................................................... 7-14
7.8 I/O Assignment Function ........................................................................................................................ 7-15
7.9 Stopping/Restarting the Cyclic Transmission and Stopping Link Refreshing (Network Test) ............. 7-16
7.10 Multiplexed remote master function (Process CPU)............................................................................ 7-17
7.11 Multiplexed remote master function for the redundant system (Redundant CPU) ............................. 7-32
7.11.1 Backup function of master operation on system switching between control system and
standby system ................................................................................................................................ 7-34
7.11.2 Master operation by the station that has started up as the control system.................................. 7-35
7.11.3 System switching request function of control system ................................................................... 7-36
7.11.4 Access function by specifying the control system or standby system ......................................... 7-39
7.12 Remote password ................................................................................................................................. 7-40
8 TROUBLESHOOTING 8- 1 to 8-61
8.1 Network Diagnostics (Network Monitor) ................................................................................................. 8- 2
8.1.1 Host information ............................................................................................................................... 8- 5
8.1.2 Other station information.................................................................................................................. 8- 7
8.1.3 Network monitor details ................................................................................................................... 8- 9
8.1.4 Error history monitor ......................................................................................................................... 8-12
8.2 Troubleshooting ...................................................................................................................................... 8-15
8.2.1 Items checked first ........................................................................................................................... 8-21
8.2.2 Items checked when data link cannot be performed throughout the system ................................ 8-21
8.2.3 Items checked when data link is disabled by resetting or powering off a station .......................... 8-22
8.2.4 Items checked when data link cannot be performed on a certain station ..................................... 8-22
8.2.5 Items checked when an communication data error is detected .................................................... 8-23
8.2.6 Items checked when a link dedicated instruction does not complete ............................................ 8-23
8.2.7 Items checked when multiplexed remote I/O network for redundant system does not operate
normally ........................................................................................................................................... 8-24
8.2.8 Items checked when a minor error (continue error) on a remote I/O station cannot be detected
......................................................................................................................................................... 8-24
8.2.9 Checking incorrect optical fiber cable connection during online .................................................... 8-25
8.3 Error Codes ............................................................................................................................................. 8-28
8.3.1 How to check error codes ................................................................................................................ 8-28
8.3.2 MELSECNET/H error code list ........................................................................................................ 8-34
8.3.3 Error codes detected on remote I/O stations and equivalent to CPU module error codes ........... 8-43
8.4 Canceling a Minor Error (Continue Error) on a Remote I/O Station ...................................................... 8-52
8.4.1 Canceling a specific remote I/O station error .................................................................................. 8-53
8.4.2 Canceling errors of all remote I/O stations ...................................................................................... 8-54