Mitsubishi Electric MELSEC Q Series Reference Manual page 14

3 SPECIFICATIONS
3.1 Performance Specifications ................................................................................................................ 3- 1
3.1.1 Optical loop system performance specifications ......................................................................... 3- 1
3.1.2 Coaxial cable system performance specifications ...................................................................... 3- 3
3.1.3 Optical fiber cable specifications .................................................................................................. 3- 4
3.1.4 Coaxial cable specifications ......................................................................................................... 3- 5
3.2 Function Specifications ......................................................................................................................... 3-10
3.2.1 Cyclic transmission function (periodic communication) ................................................................ 3-11
(1) Communicating with I/O modules .............................................................................................. 3-11
(2) Communicating with intelligent function modules ...................................................................... 3-12
3.2.2 RAS functions ................................................................................................................................. 3-17
(1) Output reset function for communication errors ......................................................................... 3-17
(2) Hardware error time CPU operation mode setting .................................................................... 3-17
(3) Automatic return function ............................................................................................................ 3-18
(4) Loopback function (optical loop system) .................................................................................... 3-19
(5) Station detach function (coaxial bus system) ............................................................................ 3-21
(6) Transient transmission enabled even at CPU module error ..................................................... 3-22
(7) Abnormal detection time ............................................................................................................. 3-23
(8) Diagnostic function ...................................................................................................................... 3-24
(9) Redundant power supply on a remote I/O station ..................................................................... 3-25
(10) Online module change on a remote I/O station ....................................................................... 3-28
3.3 Link Data Send/Receive Processing Time Specifications ................................................................... 3-34
3.3.1 Link data send/receive processing ................................................................................................ 3-34
3.3.2 Transmission delay time ................................................................................................................ 3-40
3.3.3 Switching time from the multiplexed remote master station to the multiplexed remote
sub-master station in a multiplexed remote I/O network ................................................................ 3-59
3.3.4 Output holding time during system switching in the multiplexed remote I/O network for
redundant system ............................................................................................................................ 3-60
4 SETTING AND PROCEDURE BEFORE OPERATION
4.1 Procedure Before Operation ............................................................................................................... 4- 1
4.2 Part Names and Settings .................................................................................................................... 4- 2
4.2.1 QJ71LP21, QJ71LP21-25, QJ71LP21G, QJ71LP21GE, QJ71BR11 (Remote master station)
....................................................................................................................................................... 4- 2
4.2.2 QJ72LP25-25, QJ72LP25G, QJ72LP25GE, QJ72BR15 ............................................................ 4- 6
4.3 Installing and Uninstalling the Module .................................................................................................. 4-11
4.4 Stopping the CPU (Unintentional Output Prevention) .......................................................................... 4-13
4.5 Checking the Input Power Supply Voltage ........................................................................................... 4-13
4.6 Powering On .......................................................................................................................................... 4-13
4.6.1 Checking the on status of the POWER LED of the power supply module ................................... 4-13
4.6.2 Checking the on status of the RUN LED of the network module .................................................. 4-13
4.7 Unit Tests of the Network Module (Offline Test) .................................................................................. 4-14
4.7.1 Self-loopback test ........................................................................................................................... 4-15
4.7.2 Internal self-loopback test .............................................................................................................. 4-17
4.7.3 Hardware test ................................................................................................................................. 4-19
4.8 Cable Connections ................................................................................................................................ 4-21
4.8.1 Optical loop system ........................................................................................................................ 4-21
A - 12
3- 1 to 3-64
4- 1 to 4-37
A - 12