MUITECstudent
Member
Hello all. My partner Sean and I are college students working on a PLC networking project. We are new to the forums, so please pardon any simple questions or mistakes we may make.
To fulfill requirements for an R&D class, we have to network 3 AB MicroLogix 1000 PLCs across a DH-485 network using AIC+ network modules. We desperately need help, as we have hit a stopping point.
First, we wired the network using a network cable with four wires inside. The cable runs across 4 AIC+ modules, and has the 5th and 6th pin connected on either side to utilize the terminal resistor inside, as well as grounding one side via the first and second pins.
Next, we have configured a PLC to run on the DH-485 protocol using the following technique:
Project ==> Channel Config & selected the radio button for DH-485. We set the node address at 1.
Unfortunately, this is where we are stuck. When we connect as shown, we get no response from the PLC.
PC ===(9 pin serial cable)=== AIC+ ===(4 wire network cable)=== AIC+ ===(8 pin HHP Cable)=== First PLC.
Please let us know what we are doing wrong, and keep in mind that we are novices.
Thank you very much!
-Bill T.
To fulfill requirements for an R&D class, we have to network 3 AB MicroLogix 1000 PLCs across a DH-485 network using AIC+ network modules. We desperately need help, as we have hit a stopping point.
First, we wired the network using a network cable with four wires inside. The cable runs across 4 AIC+ modules, and has the 5th and 6th pin connected on either side to utilize the terminal resistor inside, as well as grounding one side via the first and second pins.
Next, we have configured a PLC to run on the DH-485 protocol using the following technique:
Project ==> Channel Config & selected the radio button for DH-485. We set the node address at 1.
Unfortunately, this is where we are stuck. When we connect as shown, we get no response from the PLC.
PC ===(9 pin serial cable)=== AIC+ ===(4 wire network cable)=== AIC+ ===(8 pin HHP Cable)=== First PLC.
Please let us know what we are doing wrong, and keep in mind that we are novices.
Thank you very much!
-Bill T.