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9/3/2014 7:40 AM | |
Joined: 5/15/2012 Last visit: 5/21/2024 Posts: 39 Rating: (7) |
yes, min value is 0 of analog signal: example: measure range of sensor: 10 - 26 bar output signal of senzor (input PLC): 4 - 20 mA (4mA = 10 bar, 20mA = 26bar) analog signal (4-20mA) is in PLC mapped to integer value 0-27648 (10bar = 4mA = 0, 18bar = 12mA = 13824, 26bar = 20mA = 27648) same principe is for signal 0-20mA and 0-10V (unipolar range, range in positive value) for range -10V to 10V is value mapped -10V=-27648, 10V=27648 so the 1st procedure is correct in your picture in manual by Marcjan (2nd reply) s7300_module_7KF02.pdf ,page 315 in 1/2 : Current input 3.2 to 20mA +- 0.7% value -200 can means you have pressure under 1bar (0.6744792) |
9/5/2014 3:45 AM | |
Joined: 2/12/2014 Last visit: 5/28/2023 Posts: 158 Rating: (0) |
thanks Mr. Palo. i was success. |
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