I don't know if the documentation is correct. However, it may simply be "undefined" past a certain value. Try this, put an ACCUM block in manual and enter the desired output. Try 11111111, 22222222, etc. and observe the output. Interesting. Further, if I set the output to 1111111.11111 and use omget to retrieve the value, it returns 1111111.12. Don't know what this means, but again, it may be undefined. Regardless, assume the maximum output is 8192K as per documentation. If you set this as the max value, then the ACCUM block will rollover and the output CARRY will be true for one BPC. Configure another block to count how many times CARRY is true. The CALC block has a convenient command to increase an integer output or memory value in a single command without having to load that value into the accumulator, etc. Since this was the documented maximum, I simply set that as the high limit in the ACCUM and used a CALC block to count CARRY. Steve Shimp Senior Systems Analyst ExxonMobil Paulsboro Lube Plant Phone: 856-224-5059 Cell: 609-820-8501 Fax: 856-224-5030 Email: steve.shimp@xxxxxxxxxxxxxx Corey R Clingo <clingoc@basf-corp To: foxboro@xxxxxxxxxxxxx .com> cc: Sent by: Subject: [foxboro] The ACCUM block saga foxboro-bounce@fre continues... elists.org 06/05/02 12:59 PM Please respond to foxboro Well, I watched one of our totalizers today. Current value is around 159 million -- a tad higher than 8192K. High scale is 99 billion. The least-significant digits are moving, and do in fact seem to be accurately counting the current flow input (within the timing error of the 2-second period). So is the documentation just incorrect? And if so, how can I retrieve this value with omget? If not, then what's the deal? Corey Clingo Sr. Engineer BASF Corp. _______________________________________________________________________ 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: //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: //www.freelists.org/list/foxboro to subscribe: mailto:foxboro-request@xxxxxxxxxxxxx?subject=join to unsubscribe: mailto:foxboro-request@xxxxxxxxxxxxx?subject=leave