Difference between DH+ and DH485 Port on AB SLC505 PLC's

Are there protocol differences and/or signal differences btw. these ports?

Are there protocol differences and/or signal differences btw. these ports?

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Yes they are different


An SLC 503 uses DH485
A SLC 504 uses DH+
A SLC 505 uses Ethernet

All of them also have an RS 232 port as well

Gil47 said:

Yes they are different


An SLC 503 uses DH485
A SLC 504 uses DH+
A SLC 505 uses Ethernet

All of them also have an RS 232 port as well

Click to expand...

Understood and we are aware of that! Our current setup: CPU SLC504 has DH+ port. Talks to Panelview on that port. We need to upgrade to SLC 505 as we need to network (Don't want to use 1761-NET-ENI) on ethernet. Can the RS232 port of the SLC 505 be reconfigured to talk to the panelview on DH+. The manual indicates that the RS232 can be configured to DH485. Hence my question what the difference is between DH485 and DH+, and can the existing Panelview talk to the RS232 port?

No the serial port cannot be used for DH+.
What is the catalog number of the PanelView?
(first rule when asking anything about PanelViews is to supply the part number)

Alan

alan_505 said:

No the serial port cannot be used for DH+.
What is the catalog number of the PanelView?
(first rule when asking anything about PanelViews is to supply the part number)

Alan

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I am not on the plant at present. Was just pre-empting - type of what /if scenario. Will get all the details and then will revert back to if needs be. Thank you for the assist.

controllec said:

I am not on the plant at present. Was just pre-empting - type of what /if scenario. Will get all the details and then will revert back to if needs be. Thank you for the assist.

Click to expand...

It may be easier to toss in an Ethernet to DH+ gateway. I tossed one in on a PLC5 system that goes to wireless. The ship's have a PV+ to access the land based system so it can operate the system remotely. IIRC, the unit was about 1900 bucks from Prosoft. Worked great. I could be anywhere within wireless range and have access to everything. Pretty sweet!

Another DH+ rig (dual 542's) and a 1500P (panel puter). The guy who set this up did not know that this had RSLinx Gateway. After a few minutes of configuration, I am sitting out in the parking lot, in my truck, online -via- wireless. No problems what so ever. Worked great.

My baby router is a Cradlepoint CTR35, and this thing has some range to it.