Q: I have an Allen-Bradley 1770-KF2 that I use to connect my plant DH+ network to a remote site using DF1 over a leased Telephone Line.  This configuration is working fine because the DF1 link is point-to-point and the KF2 operates in Full-Duplex, where the KF2 acts as a DF1 Master.  I would like to convert this setup to a point-to-multipoint network.  To do this, I must convert the KF2 and remote PLC from Full Duplex to Half Duplex.  The problem is that the 1770-KF2 only operates as a DF1 Master if it is Full Duplex.  If the KF2 is switched to Half Duplex, it will not operate as a DF1 Master, but only as a DF1 Slave.

Will your DataLink DL3500-DH+/DF1 operate as a DF1 Master in Half Duplex?

A: We have confirmed with our Engineers and Yes the DL3500-DH+/DF1 will work well in your application and it will operate as a DF1 Master in Half Duplex! Great news for you!

Q: I looking for a direct replacement to the Allen-Bradley 1770-KF2, can you help me?

A: We have internal and expernal solutions for you. Including the following:

DL3500-DH+/DF1
DL-PC/104 - PC/104 Bus Interface
DL-PC - ISA Bus Interface
DL-PCI - PCI Bus interface

More details: Allen-Bradley 1770-KF2

Q:We like to use the DL4500-EDH+ fore two conections from a Siemens PLC via CP443-1 to an Allen Bradley PLC 5/40 an PLC 5/80. You can see this in the drawings in the appendix. The CP443-1 can comunicate with 10/100 Mbit/s Full/Half Duplex. Comunication with ISO ,TCP/IP and UDP protocol. We like to use two DL4500-EDH+ to make comunication via DH+ and RIO to both PLC 5. DH+ comunication is used fore order datas. The RIO communication is used for bit communication.

A: You will need to add a DF1 or Modbus module to your Siemens PLC. Then you can use either the DL3500-DH+/DF1 and the DL3500-DH+/Modbus to have connectivity to DH+. For RIO you use the DL2000-KFR.

Q: We have a bunch of PLC 5’s which are all on DH+ network. We want to have an HMI on Ethernet. We are looking for some kind of a bridge between DH+ and Ethernet. We would like to communicate to each one of the PLC’s independently.

A:Our DL3500-DH+/IAP will allow RSlinx & RSLogix to access DH+ via AB’s Ethernet/IP.

Q: I have several Schneider Electric TSX Micro and TSX Premium PLCs with
Modbus port which should be connected to DH+ network.

A: I am sending you a quote on the DL3500-DH+/Modbus.

Q: We have a problem collecting data from a number of AB SLC503 processors and I think that you have the solution. Could you please let me have a price for your DL4500-EDH-485 Datalink module?

A: The DL4500-EDH-485 will allow you to 'see' all nodes on the DH-485. You can collect data and program the individual PLC's.

Q: I would like more info on the DL4500-EDH-485. Can this be used with RSSql for data collection in a 5/03 processor with current Dh485 network of 2 Adaptascan Barcode readers and 2 panelview 550s? If so what is the price and delivery of the product?

A: Thanks for your email! The DL4500-EDH-485 will work well in your application. Commonly, RSSql is used in conjunction with RSLinx Classic to get data to and from Rockwell controllers.

Q: I would like to get a quote for your Ethernet to data highway + device (DL4500-EDH+). We currently use an ActiveX control within Visual Basic to talk to AB PLC’s that have Ethernet capability. Do you know if your device would work with this control.

A: I have provided you with a quote on the DL3500-DH+/IAP. It will work well in your application as described below. If you would like the PLC's on the Ethernet IP (master) network to comunicate to PLC's on the DH+ (slave) network, the DL3500-DH+/IAP is your solution. I included the DL4500-EDH+ in the quote but it will not work properly in your application. It would allow you to prg / communicate to all nodes on the DH+ from an Ethernet TCP/IP connection.

Q: I need to communicate via Ethernet to an Allen Bradley SLC 504 cpu. The cpu is currently connected to an AB ‘PanelView 1000’ operator display through the DH+ port. I need to maintain this connection and also connect to a SLC 505 cpu that has an Ethernet port. Will your DL4500-EDH+ module allow this?

A: Thanks for your email! The DL3500-DH+/IAP will work better in your application as the DL4500 will not work because it cannot talk to the SLC 5/05 on the ethernet side. The DL3500-DH+/IAP will allows nodes on the Ethernet side to talk to notes on the DH+ side.

Q: I am assisting a County Rural Water District with adding some new Ethernet radio modems between their Pumping Station and Water Towers.
They already have an Allen Bradley SLC 5-05 with Ethernet being used for the Panelview + and for programming. I plan on adding an Allen Bradley Micrologix 1100, that features Ethernet, at a water tower 5 miles distant.

At our Water Plant. that sells water to the Rural Water District, we have a SLC 5-04 at the Water Plant serving as a master.
Connected to the SLC 504 serial port is a Radio Modem operating Half Duplex with DF-1 Protocol. That means my serial port is tied up. Even with Allen Bradleys new serial port splitter requiring Full Duplex, I am limited to Half Duplex with the radio modems.

The only remaining way to connect to the Water Plant SLC 5-04 PLC is to the DH+ network, where I have Panelviews connected.

In the future, when we decide to monitor the Rural Water District using Ethernet, how can I bridge in the Allen Bradley Ethernet signals. I would have to add an Ethernet modem at the SLC-504 location, but getting the Ethernet protocol into the DH+ network is my dilemma.

Will your DL4500-EDH+ serve my needs??

A: We highly suggest the DL3500-DH+/IAP as you are talking Ethernet IP. Ethernet side is master!

Q: We have an application where we are recommissioning a mine site which is running 2 x A-B PLC5 processors (1 each 5/20, 5/40 & 5/60) with Citect being used as the SCADA system - all are running on DH+.
The option of purchasing PKTX cards is less than attractive so we are keen to look at different options:

An direct replacement for the PKTX cards (your DL-PCI seems like it is a DIRECT replacment - is that correct?)

Installation of 1 or more DH+ to TCP/IP gateways. The 2 x Citect I/O Servers access the DH+ network at a single point on that network - for redundancy should we be using an individual gateway for each I/O Server?

A: Yes the DL-PCI is a direct replacement as well as the DL3500-DH+/DF1 (external solution). If you want Ethernet TCP/IP (ie allows you to see all nodes on DH+ from a computer on an Ethernet TCP/IP network. This is the DL4500-EDH+. You can program the nodes and collect data.

Q: I have a need to interface 9 Allen Bradley SLC 5/03 PLC’s to a plant network for a data collection system. The PLC’s are using DH 485 out of 1 port and the other port is dedicated to an RSView application.

The only things on each network are the SLC 5/03 and A Cutler Hammer Panel Mate. The plant network is Ethernet. What I need is a way to use Ethernet to get onto the DH 485 networks to check data in each plc. So basically I need some type of Gateway between Ethernet to DH 485. I will have to go back and check the total. It may not be nine. What I am trying to do now is find a device that can join the 2 networks together to get the information. Can you help?

A: The DL3500-DH-485/IAP is the solution for you!