Need help

Hi there. I have panel view 550 keypad . Part number 2711-k5A5 has communication port rs-232 phisically it's protocol dh-485 . Can I replace it with other one has communication port rs-485 phisically it's protocol dh-485
. It's connected to SLC 5/04 through the serial rs- 232 port (Cho) on processor module by straight forward cable with two d-shell type 9 pin sokets in the two sides .
The new panel view had rj-45 communication port . What can I do to connect it with SLC 5/04 in the same protocol dh-485.

i think i must make new straight with rj45 soket in side . And the other side will be d-shell type . And edit the hmi program on panel builder soft to change the model .and download it .is that true or false?

Thanks in advance

That is not a RS-232 communication port, it is for hooking up a printer to it only.

If replacing the PV, replace it with the same model number and dont try making it a different model by re-wiring it. If you need to change the communications, change it in the plc to whatever protocol the PV needs to run correctly.

If I understand what you are trying to do, it's just plain stupid. Read the manual and do it correctly.

just my .02

The cat.number 2711-k5A5 has one port D-shell(9pins) type rs-232 phisically with dh-485 protocol you can see it's user guide to make sure.
Also the channel 0 in 5/04 plc D-shell(9pins) type as well but converted inside my machine program into dh-485

And the cat number 2711-k5A2 has one port dh-485 type ( 8 pins)!
You can review it's user guide . The question now how can I connect them ?

See here... Table 24, page 18, https://literature.rockwellautomation.com/idc/groups/literature/documents/td/2711-td007_-en-p.pdf

Protocol = DH-485


PanelView Standard
Comm Port
DH-485 port (RJ45)
PanelView 300 to 1400
2711-xxx2, 2711-xxx3

SLC 5/03, 5/04, 5/05
CH0 (9-pin RS-232)
(DF1 or DH-485)

Use AIC+ module
(1761-NET-AIC)
to connect to port 3

I think the way I am reading it.... they are recommending using a 1761-NET-AIC, some of the ports on the AB products have power and will burn up if you just start plugging things into them

Old system:
2711-K5A5 DH485 Protocol -> "straight through" RS-232 Cable -> SLC-5/04 Channel 0

New System:
2711-K5A2 DH485 protocol -> 1761-CBL-AS03/AS09 RS485 Cable -> 1761-NET-AIC 6-pin port

1761-NET-AIC Mini-DIN8 -> 1761-CBL-PM02 RS-232 Cable -> SLC-5/04 Channel 0
OR
1761-NET-AIC DB9 -> 1747-CP3 RS-232 Cable -> SLC-5/04 Channel 0.

You must use the signal converter module, 1761-NET-AIC. You cannot make a cable to directly connect the RJ45 jack on the PanelView to the RS-232 port on the SLC-5/04 because they use different signal standards.

The 1761-CBL-PM02 cable must be purchased from A-B or an equivalent vendor.

The 1747-CP3 can be substituted by a "null modem" RS-232 cable.
The 1761-CBL-AS03/AS09 can be built according to the wiring diagram in the 1761-NET-AIC user manual.

Even though the channel 0 of the SLC -5/04 is converted into dh-485 in my machine program ?? I must need the "1761-NET-AIC " interface device ??

Yes, you need the 1761-NET-AIC interface.

RS-232 and RS-485 are different electrical signal standards. They run at different voltage levels, measure the signals for 1 and 0 differently, and have different transceiver chips inside the devices.

"Data Highway 485" is a logical protocol that originally ran only on the isolated 3-wire RS485 networks on SLC-5/01 and 5/02 and 5/03 controllers. The protocol adopted the name of the signal type because there were already A-B proprietary protocols called Data Highway and Data Highway II and Data Highway Plus.

Later, the DH485 protocol was migrated to point-to-point circuits and RS-232 wiring. The name stays the same even though it's on a different signal type.

Really I appreciate your quick replies .
always brilliant.
Best regards