6/9/2020 1:26 PM | |
Joined: 2/10/2006 Last visit: 7/15/2024 Posts: 148 Rating:
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Further to your question: the way the auto/ manual state of a PID loop is controlled in a TI555 Controller is by means of the LVF attribute of the PID loop. Please see attached extract of the manual. The Loop V-flag is a 16 bit word. it can be configured as 1 v-memory or 16 consecutive C-coils. bit 1, 2 and 3 are used to set the PID loop state. Your CVU 10 000 is certainly writing to these bits. You can only set one of the 3 bits at a time, the other ones must be zero. bit 4 and 5 are read-only and used to determine the state of the PID loop. They will reflect if the command has been taken into account. Your CVU 10 000 will certainly read bit 4 & 5 to display the state of the PID Loop. So, yes the state of the PID is controlled inside the TI555 PLC and the CVU 10 000 merely works as an interface to change the command bits. Regards, Carlo AttachmentLVF.pdf (1063 Downloads) |
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