I believe this is what I was looking for. Thanks -----Original Message----- From: Jones, Charles R. (Chuck) [mailto:Chuck.Jones@xxxxxxxxxxxxxxx] Sent: Wednesday, December 15, 2004 10:06 AM To: 'foxboro@xxxxxxxxxxxxx' Subject: Re: [foxboro] Lock Setpoint Value in Controller There may be better ways, but when I've needed to do this I link the remote setpoint, then lock the PIDA into remote mode by connecting the REMSW to itself, as in: :PIDABLOCK.REMSW.1 This, by the way, is the way you link a parameter back to itself, then provide it with a default value ('1' in this case). I don't know if it is possible to make reflexive connections with anything other than Boolean values. In any event, I don't think it is possible to connect the SPT parameter to anything. You can connect to it and read it, but you can't connect anything to it and write to it. That's why I go with the remote setpoint. Chuck Jones Refinery Automation Technologist Tate & Lyle -- Lafayette South Plant 765.477.5324 - Office | 877.536.9219 - Pager -----Original Message----- From: Karppi, Dan (SudburySmelter) [mailto:DKarppi@xxxxxxxxxxxxxxxxxxxxxxxx] Sent: Wednesday, December 15, 2004 2:44 PM To: 'foxboro@xxxxxxxxxxxxx' Subject: [foxboro] Lock Setpoint Value in Controller Hello List Members, I want to lock the value of the setpoint in a PIDA controller so that it cannot be changed from the faceplate. I recall that in an earlier post it was suggested that a configured parameter can be linked to itself in the block configuration to lock its value. I've searched the archives but cannot find this post. Does anyone remember how to do this? Thanks in advance, Dan Karppi CCST Instrument Technologist Falconbridge Limited Falconbridge, ON Canada _______________________________________________________________________ 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 email and any files transmitted with it are confidential and intended solely for the use of the individual or entity to whom they are addressed. If you are not the intended recipient or the person responsible for delivering the email to the intended recipient, be advised that you have received this email in error that any use, dissemination, forwarding, printing, or copying of this email is strictly prohibited. If you have received this email in error please notify the sender immediately. Please note that we reserve the right to monitor and read any emails sent and received by the Company in accordance with and to the extent permitted by applicable legal rules. **************************************************************************** ************************* _______________________________________________________________________ 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 The Noranda/Falconbridge Anti-Virus System has scanned this message/attachment(s) for viruses. _______________________________________________________________________ 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