fernandes
Guest
F
AB RIO problem. Please help.
we have one main chassis where PLC 5/25 is present ( 1785-LT2)
Channel 1A configured as DH+
Channel 1B configured as RIO
addressing : 1/2 slot ( 32 point DI / DO cards used)
chassis: 1771-A4B ( 16 slot chassis)
Power supply : external 1771-P7S
We have one RIO rack.
Chassis: 1771-A1B
RIO adapter : 1771-ASB, series D
addressing : 1/2 slot
module present : only one analog output card 1771-OTE2 / B
module location: group 2 (module 0)
starting group: 0
Starting rack: 4
Power supply: internal (1771-P4S)
We have one Dataliner DL40 in RIO
Rack address: 5
rack size: full
starting group: 0
baud rate: 57.4
yesterday night our Dataliner displayed" No PLC communication"
we actually thought it as Data liner problem.
we replaced it with a new dataliner with application program. same problem.
then we changed the RIO cable from RIO adapter rack 4 to Dataliner rack 5. same problem.
We then changed the 1771-A4B chassis along with new power supply thinking that it could be chassis problem.
same problem.
then we changed new 1771-ASB, series E with new Chassis and power supply at rack address 4. same problem.
the RIO scanner led was blinking red.
then we replacled PLC 5/25 with PLC 5/40 converted 5/25 program into 5/40 and configured the CH1 A and CH1 B.
then also we had the same problem. then we changed back to 5/25 CPU itself.
Rack 5 (dataliner went to fault mode). If i clear that fault then rack 4(RIO adpater went to fault)
If i remove any one then RIO scanner led was solid green.
I checked all the rack address. its all correct there was no duplicate rack address.
now finally everything solved(solid green RIO scanner led) but Dataliner displayed "NO block transfer"
at this point RIO 4 and 5 led were solid green.
but Dataliner BTR and BTW ERR bit was on.
If i remove Rack 4 (RIO adapter) then Rack 5(dataliner) BTR and BTW will go to EN and DN. at this time DN and ERR will come in Rack 4 BTR & BTW ladder.
same way if i remove Rack 5 then Rack no. 4 BTR and BTW will go to EN and DN. at this time DN and ERR will come in Rack 5 BTR and BTW ladder.
Every time i do autoconfigure in program mode all the RIO active led will blink green. but when i put the processor to run mode either one of rack 4 or rack 5 will go into fault mode. that is in most case if dataliner worked then Rack 4 RIO adapter card all LED will go off. even if there is power present. now if again i want its active led then i have to go into program mode and again do another autoconfigure. this time Rack 4 RIO adapter will work but Rack 5 dataliner will go into fault mode.
Every time i change the PLC into program mode dataliner will display "program mode"
Now i disconnected Rack 4 rio adapter card and just autoconfigured Rack 5 dataliner. solid green now.
put PLC into run mode.
But Dataliner showed no screen in it. if i change processor to program mode .immeditaly dataliner will display " program mode"
some time when i change from program mode to run mode. any one screen will blink in the dataliner continuously.
I really donot know how to solve this problem and donot know where i am making mistake.
actually this system was working very well from 1990 till today. so its not a new installation.
all rack address and group every thing is same. i checked all DIP switches.everything is same as what it used to be.
Now our production is stoped from yesterday night. can you please help us to solve this problem.
Many thanks,
Fernando
we have one main chassis where PLC 5/25 is present ( 1785-LT2)
Channel 1A configured as DH+
Channel 1B configured as RIO
addressing : 1/2 slot ( 32 point DI / DO cards used)
chassis: 1771-A4B ( 16 slot chassis)
Power supply : external 1771-P7S
We have one RIO rack.
Chassis: 1771-A1B
RIO adapter : 1771-ASB, series D
addressing : 1/2 slot
module present : only one analog output card 1771-OTE2 / B
module location: group 2 (module 0)
starting group: 0
Starting rack: 4
Power supply: internal (1771-P4S)
We have one Dataliner DL40 in RIO
Rack address: 5
rack size: full
starting group: 0
baud rate: 57.4
yesterday night our Dataliner displayed" No PLC communication"
we actually thought it as Data liner problem.
we replaced it with a new dataliner with application program. same problem.
then we changed the RIO cable from RIO adapter rack 4 to Dataliner rack 5. same problem.
We then changed the 1771-A4B chassis along with new power supply thinking that it could be chassis problem.
same problem.
then we changed new 1771-ASB, series E with new Chassis and power supply at rack address 4. same problem.
the RIO scanner led was blinking red.
then we replacled PLC 5/25 with PLC 5/40 converted 5/25 program into 5/40 and configured the CH1 A and CH1 B.
then also we had the same problem. then we changed back to 5/25 CPU itself.
Rack 5 (dataliner went to fault mode). If i clear that fault then rack 4(RIO adpater went to fault)
If i remove any one then RIO scanner led was solid green.
I checked all the rack address. its all correct there was no duplicate rack address.
now finally everything solved(solid green RIO scanner led) but Dataliner displayed "NO block transfer"
at this point RIO 4 and 5 led were solid green.
but Dataliner BTR and BTW ERR bit was on.
If i remove Rack 4 (RIO adapter) then Rack 5(dataliner) BTR and BTW will go to EN and DN. at this time DN and ERR will come in Rack 4 BTR & BTW ladder.
same way if i remove Rack 5 then Rack no. 4 BTR and BTW will go to EN and DN. at this time DN and ERR will come in Rack 5 BTR and BTW ladder.
Every time i do autoconfigure in program mode all the RIO active led will blink green. but when i put the processor to run mode either one of rack 4 or rack 5 will go into fault mode. that is in most case if dataliner worked then Rack 4 RIO adapter card all LED will go off. even if there is power present. now if again i want its active led then i have to go into program mode and again do another autoconfigure. this time Rack 4 RIO adapter will work but Rack 5 dataliner will go into fault mode.
Every time i change the PLC into program mode dataliner will display "program mode"
Now i disconnected Rack 4 rio adapter card and just autoconfigured Rack 5 dataliner. solid green now.
put PLC into run mode.
But Dataliner showed no screen in it. if i change processor to program mode .immeditaly dataliner will display " program mode"
some time when i change from program mode to run mode. any one screen will blink in the dataliner continuously.
I really donot know how to solve this problem and donot know where i am making mistake.
actually this system was working very well from 1990 till today. so its not a new installation.
all rack address and group every thing is same. i checked all DIP switches.everything is same as what it used to be.
Now our production is stoped from yesterday night. can you please help us to solve this problem.
Many thanks,
Fernando