Oliascobra
Member
Hi all:
I am connecting nodes to a DH485 network without using an AIC module as follows:
SLC5/03 DH485 port (RJ45-style jack) using a 1747-C20 cable to connect to the wide DH485 jack in a PV600, PN 2711-K6C3, which has both a wide AB jack and a RJ45 DH485 jack. I then connect another 2711-K6C3 to the first PV600 using another 1747-C20 cable. Then I connect my laptop through a PIC (which has only the wide DH485 jack) using yet another 1747-C20 cable into the second PV600.
Long-winded, I know, but here's the point. I use this setup for programming and testing in my lab and it works fine. Now I have a special application where instead of using the 1747-C20 cable to connect the first and second PV600s, I need to use a standard pin-to-pin CAT5e cable with an RJ45 plug on each end. This means that I must connect each PV600's RJ45 DH485 port to either end of the cable. This setup also works, but now I cannot connect my laptop to the second PV600 because AB does not make a wide DH485 to wide DH485 connector cable.
Now when speaking to AB, they don't explain why they don't make that cable configuration, and further, they say that I cannot connect more than 2 nodes to the DH485 network without a 1747-AIC module. Yet I am, and the fact that the standard ethernet cable works to connect the second PV600 to the DH485 network seems to imply that the wiring for the 1747-C20 is simply straight through pin-to-pin. They won't provide me with a wiring diagram for the 1747-C20 cable.
I manufacture an instrument that uses the SLC and PV600s. If I use the ethernet cable to connect the PV600s, will I be making a mistake and perhaps installing an unreliable system? AB won't comment other than "that is not a supported configuration", meaning, I believe, that they don't understand the specifics of their network themselves.
Thanks!
P.S. Is there a formal name for that "wide DH485 connector"?
I am connecting nodes to a DH485 network without using an AIC module as follows:
SLC5/03 DH485 port (RJ45-style jack) using a 1747-C20 cable to connect to the wide DH485 jack in a PV600, PN 2711-K6C3, which has both a wide AB jack and a RJ45 DH485 jack. I then connect another 2711-K6C3 to the first PV600 using another 1747-C20 cable. Then I connect my laptop through a PIC (which has only the wide DH485 jack) using yet another 1747-C20 cable into the second PV600.
Long-winded, I know, but here's the point. I use this setup for programming and testing in my lab and it works fine. Now I have a special application where instead of using the 1747-C20 cable to connect the first and second PV600s, I need to use a standard pin-to-pin CAT5e cable with an RJ45 plug on each end. This means that I must connect each PV600's RJ45 DH485 port to either end of the cable. This setup also works, but now I cannot connect my laptop to the second PV600 because AB does not make a wide DH485 to wide DH485 connector cable.
Now when speaking to AB, they don't explain why they don't make that cable configuration, and further, they say that I cannot connect more than 2 nodes to the DH485 network without a 1747-AIC module. Yet I am, and the fact that the standard ethernet cable works to connect the second PV600 to the DH485 network seems to imply that the wiring for the 1747-C20 is simply straight through pin-to-pin. They won't provide me with a wiring diagram for the 1747-C20 cable.
I manufacture an instrument that uses the SLC and PV600s. If I use the ethernet cable to connect the PV600s, will I be making a mistake and perhaps installing an unreliable system? AB won't comment other than "that is not a supported configuration", meaning, I believe, that they don't understand the specifics of their network themselves.
Thanks!
P.S. Is there a formal name for that "wide DH485 connector"?