Mitsubishi MELSEC-Q Series User Manual page 8

4.2.5 Parameter setting with GX Developer ............................................................................................. 4-22
4.2.6 Parameter setting with dedicated instruction .................................................................................. 4-23
4.3 Functions for Improving System Reliability ............................................................................................ 4-25
4.3.1 Disconnecting data link faulty stations and continuing the data link with only normal stations
(Slave station cut-off function)......................................................................................................... 4-25
4.3.2 Automatically reconnecting a disconnected data link faulty station when it returns to normal
(Automatic return function) .............................................................................................................. 4-26
4.3.3 Continuing the data link when an error occurs in the master station PLC CPU
(Data link status setting when the master station PLC CPU has an error).................................... 4-27
4.3.4 Retaining the device status of a data link faulty station
(Setting the status of input data from a data link faulty station) ..................................................... 4-28
4.3.5 Continuing the data link even when the master station is faulty (Standby master function) ........ 4-29
4.4 Handy Functions ..................................................................................................................................... 4-44
4.4.1 Simplifying the initialization procedure registration of remote device stations
(Remote device station initialization procedure registration function)............................................ 4-44
4.4.2 Performing high-speed processing (Event issuance for the interrupt program) ............................ 4-47
4.4.3 Enabling the data link simply by powering on (Automatic CC-Link startup) .................................. 4-50
4.4.4 Communicating with intelligent device stations (Remote net mode).............................................. 4-52
4.4.5 Speeding up the response from remote I/O stations (Remote I/O net mode) ............................... 4-53
4.4.6 Creating a program that contains modules to be added in the future
(Reserved station function).............................................................................................................. 4-54
4.4.7 Powering off a station in operation without error detection
(Error invalid station setting function).............................................................................................. 4-55
4.4.8 Synchronizing the link scan with the sequence scan (Scan synchronous function)...................... 4-56
4.4.9 Replacing modules without error detection (Temporary error invalid station setting function)...... 4-60
4.4.10 Checking operations for each local station (Data link stop/restart) .............................................. 4-61
4.4.11 Station number overlap checking function .................................................................................... 4-62
4.4.12 Multiple PLC System Support........................................................................................................ 4-63
4.5 Transient Transmission Functions ......................................................................................................... 4-64
4.5.1 Performing transient transmission (Dedicated instructions) ........................................................... 4-64
5 DATA LINK PROCESSING TIME
5.1 Link Scan Time ....................................................................................................................................... 5- 1
5.2 Transmission Delay Time ....................................................................................................................... 5- 4
5.2.1 Master station
5.2.2 Master station
5.2.3 Master station
5.2.4 Master station
5.3 Processing Time for Dedicated Instructions .......................................................................................... 5-17
5.3.1 Master station
5.3.2 Local station
5.3.3 Master station
5.4 Link Refresh Time.................................................................................................................................... 5-22
5.4.1 Master station/local station ............................................................................................................... 5-22
5.5 Station Status at Error Occurrence.......................................................................................................... 5-24
5.5.1 Status of the master station, standby master station
(when the master station is operating) and remote I/O station at error occurrence...................... 5-24
5.5.2 Status of the remote device station, local station, standby master station
(when the local station is operating) and intelligent device station at error occurrence................ 5-25
A - 7
remote I/O station ............................................................................................... 5- 4
remote device station ......................................................................................... 5- 6
local station ......................................................................................................... 5-11
intelligent device station ..................................................................................... 5-16
local station ......................................................................................................... 5-17
local station............................................................................................................ 5-20
intelligent device station ..................................................................................... 5-21
5- 1 to 5-25
A - 7