You are correct, Micro IA is available now but the released version only allows the Micro IA unit to communicate with one PLC, though some older documentation indicates 16, and there might be some stability issues with AB PLCs on Ethernet. I do not think the unit can be redundant though you can get redundant nodebus cables (nodebus A&B). Of course, the Ethernet network to the PLC from the Micro IA controller is not redundant. Rick de la Cierva DLC SOLUTIONS CORP. -----Original Message----- From: Chris Browder [mailto:chris_browder@xxxxxxxxx]=20 Sent: Friday, December 28, 2001 12:53 PM To: foxboro@xxxxxxxxxxxxx Subject: Re: [foxboro] Foxboro and Allen Bradley Not much to add, but aren't there MicroIA solutions available that will connect via ethernet/ip to PLC's?=20 No one has mentioned them yet. There was also some talk a while back about there being a redundant option (in addition to fault tolerant) available in the future. If available the MicroIA would then be used instead of the AB30's... chris. --- Rick de la Cierva <rcierva@xxxxxxxxxxxxxxxx> wrote: >=20 > Bob,=3D20 >=20 > I think you caught many on vacation since this topic > usually has many > interested subscribers willing to dive in. While I > was at lunch tough I > did see Joe provided some feedback also. >=20 > The AB30 is a standard Foxboro module that can be > configured redundant. > One of the ports is configured to communicate to the > CAM (see modules > listed below) that converts it to DH+. The > limitations are: "The Gateway > supports a maximum of 16 I/A Series Allen-Bradley > Scan Blocks (ABSCAN) > to perform input/output functions with up to eight > PLC controllers". I > believe these are not hard limitations but mostly > throughput limitations > one should follow. This module is basically just a > control processor 30 > that can interface to PLCs. It only performs control > functions. >=20 > The Foxboro edocs indicate the interface modules > that can be used with > the the AB30 are " The Gateway interfaces to the > Allen-Bradley Data > Highway using 1771-KE/KF, 1770-KF2 Series B, or > 1779-KFL (in 1771-KE/KF > Emulation Mode) Communication Adapters". Note that > they are all for data > highway and not direct to ENET. I looked at the > information on the > 1761-NET-ENI and it seems like it should work also > but Rockwell has the > following note on their about this module: "Lets you > connect MicroLogix > (or other products with an RS-232-C port and DF1 > protocol) to an > EtherNet/IP network and initiate a single-hop > message with any > EtherNet/IP device via a connected CIP message. > Supports the NetLinx > services." - Note the single hop - I am not sure how > your network looks. >=20 > As Joe indicated, the other options to go directly > to the PLCs on > Ethernet is using either a 51 series(Solaris) or 70 > series Integrator - > though these are not redundant. Basically these are > either a Sun Box or > a Windows NT PC that run the Foxboro blocks inside > and connect to the > PLC directly on Ethernet. I have not tried the 70 > series integrator but > have used the 51 series. On these AB Interchange > software is loaded and > is used to communicate to the PLCs. These also have > a lot more > horsepower for blocks and your limitation is not the > number of PLCs but > the throughput on the communication network and the > ability of the PLC > to respond in adequate time. Since you mention the > AB30 module I am > guessing you have a typical Foxboro nodebus system > and not a standard > Ethernet system. You can add a second Ethernet card > to these integrators > to connect them to the PLC Ethernet network and > connect the first > Ethernet to a DNBT cart so that the integrator is > also on your standard > Foxboro nodebus network. >=20 > Give me a call if you want to discuss further. >=20 > Rick de la Cierva > DLC SOLUTIONS CORP. > 203-207-9917 >=20 >=20 > -----Original Message----- > From: Marchal, Andre L. > [mailto:AMarchal@xxxxxxxxxxxxxxx]=3D20 > Sent: Friday, December 28, 2001 10:36 AM > To: 'foxboro@xxxxxxxxxxxxx' > Subject: Re: [foxboro] Foxboro and Allen Bradley >=20 >=20 > Bob, >=20 > I also tried to connect an INT30 to Allen Bradley > 5/40E's without =3D3D > success. > I used an 1761-NET-ENI to do the DF1-RS232/Ethernet > conversion. > I do not know what the problem was (improper wiring, > protocol, etc...). > Please let me know if you find a successful method. >=20 > Bob, this is what I understand: the INT30 for Allen > Bradley can =3D3D > communicate > with up to 8 PLCs. It has 2 redundant RS232 ports > (that is a powerful =3D > =3D3D > and > easy to use feature). If you want to communicate > with more PLCs, you =3D > =3D3D > would > have to use one of the configured PLCs as a "mail > box". >=20 > Here is what I used for my test: > INT30=3D3D20 > SCSI cable P0500UX > Serial connector P0970VB > Ethernet interface 1761-NET-ENI (Allen Bradley) > Serial cable 1761-CBL-PM02 (Allen Bradley) >=20 > Andr=3D3DE9 Marchal > -----Original Message----- > From: Robert Driscoll [mailto:rdrisco@xxxxxxxxxxx] > Sent: Friday, December 28, 2001 7:55 AM > To: foxboro@xxxxxxxxxxxxx > Subject: [foxboro] Foxboro and Allen Bradley >=20 >=20 >=20 > Hello List, >=20 > I am installing several Allen Bradley PLCs and I > want to connect them =3D > =3D3D > to a=3D3D20 > Foxboro system. I know a few things about the > Foxboro hardware but I =3D > =3D3D > have a >=20 > few questions. >=20 > How many PLCs can a single AB30 module be directly > connected to? The =3D > =3D3D > module >=20 > has four ports, so I assume it can go to four > different PLCs? >=20 > I read the Foxboro on-line document and it discussed > the RS232 =3D > direct=3D3D20 > connection to a PLC, or a connection through a CAM.=20 > My PLCs will =3D > be=3D3D20 > networked together through a hub. Is there a > Foxboro way of =3D3D > communicating=3D3D20 > to the PLCs via ETHERNET? I could not find that in > the > documentation. Is it possible to connect the Fox > module(s) into the =3D3D > hub and >=20 > have the devices talk that way? >=20 > Any other pitfalls with the AB30 (or other modules > that may apply =3D3D > here)? >=20 > Bob Driscoll > Bravo Northwest Power Systems >=20 >=20 >=20 > _________________________________________________________________ > Join the world's largest e-mail service with MSN > Hotmail.=3D3D20 > http://www.hotmail.com >=20 > =3D3D20 > =3D3D20 > ___________________________________________________________________ > This list is neither sponsored nor endorsed by The > Foxboro Company. > Use the information obtained here at your own risk. > For disclaimer, > see > http://www.thecassandraproject.org/disclaimer.html#maillist >=20 > list info: http://www.freelists.org/list/foxboro > subscribe: =20 > mailto:foxboro-request@xxxxxxxxxxxxx?subject=3D3D3Djoin > unsubscribe: > mailto:foxboro-request@xxxxxxxxxxxxx?subject=3D3D3Dleave >=20 =3D=3D=3D message truncated =3D=3D=3D __________________________________________________ Do You Yahoo!? Send your FREE holiday greetings online! http://greetings.yahoo.com =20 =20 ___________________________________________________________________ This list is neither sponsored nor endorsed by The Foxboro Company. Use the information obtained here at your own risk. For disclaimer, see http://www.thecassandraproject.org/disclaimer.html#maillist list info: http://www.freelists.org/list/foxboro subscribe: mailto:foxboro-request@xxxxxxxxxxxxx?subject=3Djoin unsubscribe: mailto:foxboro-request@xxxxxxxxxxxxx?subject=3Dleave ___________________________________________________________________ This list is neither sponsored nor endorsed by The Foxboro Company. Use the information obtained here at your own risk. For disclaimer, see http://www.thecassandraproject.org/disclaimer.html#maillist list info: http://www.freelists.org/list/foxboro subscribe: mailto:foxboro-request@xxxxxxxxxxxxx?subject=join unsubscribe: mailto:foxboro-request@xxxxxxxxxxxxx?subject=leave