jturner
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Posts posted by jturner
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do not have the cable t
RS232 to Unitronics RJ11 PC programming cables
PCs are normally not equipped with an RJ11 socket for serial RS232 communications. If we want to connect a PC with an Unitronics PLC, for example for programming or debugging reasons, we need a connection cable which is on one side fitted with a female DB9 connector, and on the other side with an RJ11 jack. The layout for this cable is shown below.
Unitronics RJ11 RS232 programming cable
DB9 RJ11 Function 2 3 RxD 
TxD 3 4 TxD 
RxD 4 6 DTR DSR 5 2 + 5 Signal ground 6 1 DSR DTR hat came with the unit used the pin layout provided in the connection chart
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do not have the cable that came with the unit used the pin layout provided in the connection chart
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yes sir it refreshed and stated com1 as port
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sorry newbie here
i went into device manager and verified every thing is set to com 1 settings are the same between pc and plc . i even removed the plastic back to insure i was making contact with the connector leads. but everything seems fine with the connections
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yes sir did both set at com 1 made sure com port 1 on pc had same settings as controller
baud rate 9600
Parity even
Stop Bits 1
Data Bits 7
Flow Control None
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please help
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hi,
let me start by saying i am new to this and trying to learn as i go, but i need help please
i have a m91-2-R6-ZK1 controller i am trying to connect to it so i can up load the program to my computor and down load it to an other m91. when i try to upload it starts out with this
1. date, time, <1,9600,E,7,1>1,9600,7,EVEN,1,3,1500> Retransmitting
2. date, time, <1,9600,E,7,1> Switching Com Port
3. date, time, <1,9600,E,7,1> Synchronizing Com Ports
then it faults out with can not communicate, give the 3 reasons, cable not connected, time out to short, incorrect communication settings.
i have played around with the time out timing did not solve the issue, checked com port everything looks right there, both at 1. using the goldx usb adapter with a dp 9 to rj11 connector rs232 cable.
but i just cant seem to figure this out, any help would be greatly appreciated.
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thanks , Mr. Joe
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hello, I am very new to the controller world. I have a m91-2-r6-zk1 controller on a refrigerant dryer and I need to know how to connect to it and communicate with it. is there any hope for me, like I said very new and wanting to learn. thanks
communication issues
in Jazz, M91 PLCs and U90Ladder
Posted
the controller is from a refrigerated dryer, i did buy a new controller from E bay, but i get the same fault, no matter which controller i connect too. i have called the company that the dryer come from but they are just bleeding me for more and more service calls at 600. dollars a vist and still not working. so i am looking at doing this repair myself, the Gold X USB converter i have has the Prolific PL2302 chip set. i will look into buying the suggested cables just hopping i dont have the same issue as i have now with new cables. i am in the U.S. and i do really appreciate the help all of yall have given me.