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HITACHI PROGRAMMABLE CONTROLLER

Optical Type CPU LINK MODULE (EH-OLNK)

APPLICATION MANUAL

NJI-395(X)

Содержание Hidic EH-150 EH-OLNK

Страница 1: ...HITACHI PROGRAMMABLE CONTROLLER Optical Type CPU LINK MODULE EH OLNK APPLICATION MANUAL NJI 395 X ...

Страница 2: ...ault was caused by any of the items mentioned above the repair and examination cost are not covered If you have any questions regarding the warranty please contact either your supplier or the local Hitachi Distributor Depending on failure part examination might be impossible Ordering parts or asking questions When contacting us for repair ordering parts or inquiring about other items please have t...

Страница 3: ...ncorrectly a dangerous circumstance may be created resulting in possible death or severe injury CAUTION Cases where if handled incorrectly a dangerous circumstance may be created resulting in possible minor to medium injury to the body or only mechanical damage However depending on the circumstances items marked with may result in major accidents CAUTION In any case they both contain important inf...

Страница 4: ...ed power supply Connecting the equipment to non rated power supplies may result in the outbreak of fire Ensure that all wiring procedures are performed by qualified technicians Wrong wiring may result in the outbreak of fire damage and electric shocks The wire which supplies a power supply to the module is to use shield line And wiring is to separate from other power line signal lines Optical fibe...

Страница 5: ...Method of confirming link data validation 4 6 4 5 1 Link Error Flag Area 5 1 4 5 2 Example of Effective check of Link Data 5 1 Chapter 5 Installation and start up 5 1 to 5 4 5 1 Installation 5 1 5 1 1 Installation position 5 1 5 1 2 Loading the module 5 2 5 1 3 The connection of the optical fiber cable 5 2 5 1 4 The supply of 5V DC for the bypass function 5 3 5 1 5 Precaution in mounting 5 3 5 2 S...

Страница 6: ...of the coaxial cable A 1 to A 3 Appendix 1 CA Connector ASSY The designated method in the purchase A 1 Appendix 2 General precautions in handling optical fiber cables A 3 Appendix 3 The method to measure the optical loss level A 3 ...

Страница 7: ...ule Optical type CPU Link module EH OLNK Application Manual NJI 395 The end of the manual number will differ in accordance with upgraded versions etc Note that the contents of this manual are subject to amendment without prior notice 1 1 Before use Great care has been taken in the manufacture of this product but it is advised that the following points are checked immediately after purchase 1 Is th...

Страница 8: ...bination with the following types of CPU module Note that the link data will become unstable and access to other stations with peripheral devices will not be possible if the EH OLNK is mistakenly used in combination with CPU modules other than those listed below Table 1 3 CPUs that can be used with the EH OLNK CPU Type Version Date of manufacture EH CPU104 208 EH CPU308 316 Not supported EH CPU104...

Страница 9: ...nsfer frame synchronization Communication method Token passing Modulation method Base band Refresh time At the time of transfer of 1 024 words with 64 stations connected approx 390ms 3 Error check CRC overrun check time out open circuit parameter error dual designation of station No overlapped Link area etc Function Specification Self diagnosis System ROM RAM check watchdog timer check transfer lo...

Страница 10: ...nformation display LED RUN ERR TXD RXD ERR SEND REC Error indication select switch None Select error indication Check mode select switch None Selects check mode Mount position Can be installed in slots 0 to 2 on the basic base Can be installed in any slot on the basic base 3 Hardware Specifications Mount units Max 2 units per CPU 4 Max 2 units per CPU 1 There are cases where support is not yet ava...

Страница 11: ...itches are for station number setting This information is refreshed at the power ON or when the reset switch is pressed The setting range is from 00 up to 63 Ex Station No 18 10 digits 1 1 digits 8 Station No error will be detected when 64 or higher is set When station no is duplicated duplicate station No error detected When No 00 station does not exist the link system does not work 5 Error displ...

Страница 12: ...Contents TXD Green Blinking when data is being transmitted RXD Green Blinking when data is being received RUN Green Lighting when the link module is operating normally CPU LINK EH OLNK RUN ERR TXD RXD ERR Red Normal operations Off data link possible error Blinks 1s cycle data link not possible error Blinks 0 5s cycle or lighting Refer to section 6 2 Error Displays for further details on displays 3...

Страница 13: ...on A maximum of two link modules can be installed into any of the slots between 0 and 2 on a single basic base unit although link modules cannot be installed onto additional bases It is also possible to connect a maximum of 64 units onto one link system At least one unit must be assigned as station No 0 master station on a link system The length of the transmission route can be up to 1 000m betwee...

Страница 14: ...3 Link Area Receive Receive Receive Receive Receive Receive Receive Receive Receive Receive Receive Receive ST Station No Figure 4 2 Concept behind link areas 1 Link area assignment A shown in figure 4 2 the CPU link areas are equipped to handle 1 024 words for each optical type CPU link module As a maximum of two optical type CPU link modules can be installed for each CPU this means that a single...

Страница 15: ... 4 Link area identification An example of a CPU link system configuration is shown in figure 4 5 In the system configuration shown in figure 4 5 the optical type CPU link module ST1 with CPU A is located in the first CPU link position and link data assignment with CPU A is carried out within the first CPU link area In addition to this link data assignment for the CPU B optical type CPU link module...

Страница 16: ...mand and the optical type CPU link module will participate in the link and the data first transmitted from the local station to other stations at the start of operations will differ in accordance with the timing for transmitting from the local station to other stations and the time difference involved The program should therefore be created while monitoring the special internal output link s opera...

Страница 17: ...amount of time required for the EH 150 optical type link module to update link data is calculated in the following manner However this is only a rough estimate and does not necessarily apply when transmission errors and other errors are triggered As the refresh time is extended in these cases close consideration must be applied when designing the system Link data refresh time Transmission CPU scan...

Страница 18: ...me minimum Unit ms WRF13E 19E Refresh time present Unit ms WRF13F 19F a System bus error 1 error 0 no error b Undefined c Area error 1 error 0 no error d Duplicate area error 1 error 0 no error e Station number error 1 error 0 no error f Transmission path disconnected 1 error 0 no error g Number indicates the station number 1 participation 0 non participation h Number indicates the station number ...

Страница 19: ...Chapter 4 Basic CPU Link Operations 4 7 ...

Страница 20: ...of the link modules flag to WM0 to WM3 Extract information of stations used No and construct AND circuits with own station error information When ST No 0 32 63 are under normal operation link effective flag R0 turns ON You can read link data from other station when link system is under operation by connecting the link data effective flag as AND circuit Caution This is one of example You do not nee...

Страница 21: ... Available slot 2 units can be mounted at maximum Slot No Slot No Slot No 0 1 2 0 1 2 3 4 0 1 2 3 4 5 6 7 Figure 5 1 Example of optical type CPU link system configuration Note The actual limitation is up to 2 times of CPU link assignment module for the slot 0 to 2 Therefore if other link assignment modules such as EH RMP Profibus DP master is mounted together only one more EH OLNK can be used 5 1 ...

Страница 22: ...Note For the power module pull it out while pushing down the two lock buttons 5 1 3 The connection of the optical fiber cable An optical fiber cable is connected with the optical fiber connector at the bottom of the module The connection of the optical fiber cable is shown in the figure 5 2 Connect TxD with RxD on the companion side as shown in the figure and make it one loop in the whole of the l...

Страница 23: ... And separate from other cables in such cases as the one for I O Connect shield to ground on the power supply side 4 The wire for the power supply to the module is to use the line of a thickness 0 75mm 2 and more And make length less than 1m 5 Try to restrain mixing of the noise to the 5VDC line as much as possible A noise filter is installed in the AC DC line of the fixed voltage power supply dev...

Страница 24: ...ut off simultaneously but this will be automatically restored and link operations resumed Create a program to monitor the link participation flags and prevent the link data from being used during the period that participation flags are set at OFF 5 3 Participating in and leaving link systems If the number of the station connected to a link system and the link assignment settings are correct it is ...

Страница 25: ... No Blink 0 5s When station No s are duplicated Switch on the power supply after the cause of the error has been resolved Station No outside of range Blink 0 5s bit9 ON When the dip switch settings are outside of the 0 to 63 range Press the RESET switch after the cause of the error has been resolved Duplicate link area assignment Blink 0 5s bit10 ON When link assignment areas are duplicated Switch...

Страница 26: ...with other link modules will not be performed if the same error occurs frequently 6 3 Clearing errors The link module error will be displayed in the ERR LED and the CPU module s special internal output WRF0E0 to WRF19F The methods of clearing each of these errors are explained below 1 Clearing the ERR LED display Eradicate the cause of the error and then press the error display clearance switch or...

Страница 27: ...rs occur 6 4 2 Error troubleshooting by error The procedures for resolving each type of error are explained below When station No 0 is not exist the link operation will not start but own error information WRF0E0 WRF140 is H0000 Namely the information of no station No 0 is not stored in own error information At this time RUN LED turns off or flickers every 0 5 s Before the check by below flow chart...

Страница 28: ...between the RXD and other station displayed in bits 0 to 7 of the local station s error information 3 The transmission route cut off error is not only triggered by the transmission route being cut off it can also be triggered by the power supplies to link modules that share duplicated stations numbers being switched off simultaneously 4 There are cases where a transmission route cut off is detecte...

Страница 29: ...he power to a link module that shares the same station No with a link module that is operating normally is switched on 2 The station No duplication error will not be detected if the power supplies to link modules that share the same station No are switched on simultaneously In this event a transmission route cut off error will be detected 4 Outside the station No range Error information of own sta...

Страница 30: ...al authorized distributor of it 6 Outside the link area assignment range ERR LED Flicker at 0 5 sec intervals Error information of own station bit9 ON Replace the module with a spare one if available Notify your local authorized distributor of it Is the ERR LED on Other stations illuminated or blinking Correctly set the assignment range between WL0000 to 03FF or WL1000 to WL13FF Check the link are...

Страница 31: ...e cable firmly secured in place Is there a noise source nearby the transmission cable or unit Is an optical cable within the specification range Does the loss of the optical cable satisfy a standard Reconnect the cable correctly Secure the cable firmly in place Separate the noise source from the cable and unit Use it within the specification range of the optical cable It expects that there is a pr...

Страница 32: ...oose Switch on the power supply to the station Locate the error on the station in which the error occurred Secure the optical cable firmly in place NO NO YES YES YES NO NO YES Replace the module with a spare one if available Notify your local authorized distributor of it Does the loss of the optical cable satisfy a standard It expects that there is a problem in the optical cable itself the connect...

Страница 33: ...7 2 Regular inspections Check the following points without any power applied for both I O signals and power line Table 7 2 Regular inspection items Item Method Check whether the transmission cable connector is tightened firmly Tighten Check whether the case and connectors are clean Remove dusts by a vacuum cleaner The confirmation of the outside 5VDC input voltage Measure the voltage of the connec...

Страница 34: ...1 Set the station No setting switch on the optical link module to be checked at 90 2 Connect the loop back check cable Table 7 1 Loop back check preparations 3 Switch on the power supply and then switch the reset switch from ON to OFF while pressing the link module s error display clearance switch The RUN LED will blink twice if the loop back check mode has started up normally 4 The link module s ...

Страница 35: ...ater environment 9 Suitable Conditionally suitable Unsuitable 1 Cable must be installed along a route specifically designed for optical communication 2 Bent sections in contact with edges must be specially protected 3 Cable must not be underwater 4 Cable must be installed alongside a support wire Specification Type A Type B Type C Type D Item Panel inside Indoor Outdoor Outdoor Unit Operating temp...

Страница 36: ...ore Reinforcement fiber External sheath I Cushion layer External sheath II Type C Optical fiber core Reinforcement fiber External sheath I Cushion layer External sheath II Type D 1 Core x 1 1 Core x 2 1 Core x 3 1 Core x 4 External sheath II weight volume Cushion layer tension member Optical fiber core Reinforcement fiber External sheath I Interposition string A 2 ...

Страница 37: ...cables do not step on tem as this might increase the optical loss and break the fibers About the details of installation points please refer to the following instructions which OpNext Japan Inc publishes Optical fiber cable installation guide Optical fiber cable installation procedure CA7103 Cable assembly specification Optical connector assembly tools CT7001 Assembly guide Appendix 3 The method t...

Страница 38: ...nt target Receive side Transmission side 1 A Î B measurement target level 2 B Î A measurement target level loss level of repeater adapter 2 dBm 4 Judgment of measurement result 1 AÎB loss of target optical cable AÎB Standard measurement level AÎB Target measurement level 2 BÎA loss of target optical cable BÎA Standard measurement level BÎA Target measurement level It is judged that it is good if t...

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