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. System upgrade procedure
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All Rights Reserved. Copyright © 2018, Yokogawa Electric Corporation
TI 34M06Z42-01E
2018.06-00
3.5
Other changes (STEP3)
3.5.1 Tuning for improved basic performance
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Verify application execution on faster replacement module
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Processing timing may change due to faster processing speed.
After module upgrade, verify system operation, especially:
・ Processing dependent on the scan time of the sequence CPU
・ Refresh processing of sequence CPU
・ Response time of Ethernet and other communications
・ Replacement of HRD/HWR instructions with READ/WRITE instructions
If the replacement pose difficulties due to scan time or other
circumstances, consider switching to F3SP71-4S/F3SP76-7S.
3.5.2
Basic operation of sequence CPU
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Replacement model F3SP7□ operation at power on
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When a battery error occurs, CPU behaves similarly as when
using a ROM pack of F3SP2□/3□/5□; the ERR LED turns on, and
then immediately goes off, the RUN LED turns on, and operation
starts. Devices specified to be latched when a power failure
occurs are cleared before operation starts. If you wish to prevent
starting the operation when devices specified to be latched are
cleared, add a program that suppresses the start of the operation
if the special relay M194 (battery error) is on.
