Issues with the single-trigger block of the CS3000 system (TON)
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When I was checking the configuration of the company’s DCS system, I saw that the solenoids used for interlock control were controlled by TON blocks. However, the TON block is 1 only during one scanning cycle and 0 at other times; so how can the solenoids be kept powered on continuously? Could some expert please explain this? Thank you in advance.
The TON block is a rising-edge delay; when the input changes from 0 to 1, the delay time becomes 1, and as long as the input remains at 1, the output will stay at 1； Once the input becomes 0, the output is immediately 0 ； These are all standard functional blocks, unrelated to the Yokogawa system.
Use TON for configuring solenoid valves? It’s best to take a screenshot and take a look
A ton is a pulse; generally, those with dual outputs provide short signals, though long signals are also available for single-output ones