Ken, With the existing Modbus gateway, convert the signal from RS232 to 422/485 at the gateway with a converter then hook up to RS422/485 port on Texas PLC and do multi drop configuration to attach more PLCs. You may have to go for the slower scan rate but it depends on I/Os being scanned. -----Original Message----- From: foxboro-bounce@xxxxxxxxxxxxx [mailto:foxboro-bounce@xxxxxxxxxxxxx] On Behalf Of Ken.E.Moore@xxxxxxxxxxx Sent: Tuesday, November 16, 2004 3:38 PM To: foxboro@xxxxxxxxxxxxx Subject: [foxboro] Modbus gateway question I currently have a modbus gateway that is connected to a Texas Instruments PLC, via peer to peer. Is it possible to add an additional peer to peer connection on the second port? If I upgrade to an Integrator 30 , would two peer to peer connections be possible? thanks, Ken Moore NSCC-Wdrf PLant ______________________________________________________________________ This email has been scanned by the MessageLabs Email Security System. For more information please visit http://www.messagelabs.com/email ______________________________________________________________________ _______________________________________________________________________ This mailing list is neither sponsored nor endorsed by Invensys Process Systems (formerly The Foxboro Company). Use the info you obtain here at your own risks. Read http://www.thecassandraproject.org/disclaimer.html foxboro mailing list: http://www.freelists.org/list/foxboro to subscribe: mailto:foxboro-request@xxxxxxxxxxxxx?subject=join to unsubscribe: mailto:foxboro-request@xxxxxxxxxxxxx?subject=leave _______________________________________________________________________ This mailing list is neither sponsored nor endorsed by Invensys Process Systems (formerly The Foxboro Company). Use the info you obtain here at your own risks. Read http://www.thecassandraproject.org/disclaimer.html foxboro mailing list: http://www.freelists.org/list/foxboro to subscribe: mailto:foxboro-request@xxxxxxxxxxxxx?subject=join to unsubscribe: mailto:foxboro-request@xxxxxxxxxxxxx?subject=leave