Filtration Group MFS-05, Перевод оригинальной инструкции

Страница: 15 / 25

Page 15
Translation of the original instructions MFS-05
Δp, Filtration Group GmbH, 16.01.18, Mat. No. 70303409, Version 03
16 Appendix: RS 485 serial port
The controller has an RS 485 serial port that can be used to query the current unit settings on a PC, for example.
Data format: 1 start bit, 8 data bits, no parity, 1 stop bit
Baud rate: 19200 baud
Protocol: The data is queried by sending one byte (‘A’, ‘B’, etc.) to the controller. The controller responds with one
word (16 bits). This response must be converted to the appropriate measurement unit by the PC.
Connection: Terminal 69: RS 485 B
Terminal 70: RS 485 A
Query Response Calculation Unit Comments
20 mA input “A” 65 hex 0-1020 x / 45 mA Start input
Configuration “B” 66 hex 0-1020 Not possible, see program version
Configuration 2 “C” 67 hex 0-1020 Not possible, see program version
Pulse “D” 68 hex 0-1020 (((x div 4)² div 44) * 2 +100) / 1000 s
Interval
(potentiometer) “E” 69 hex 0-1020 (((x div 4)² div 64) +10) / 2 s
Valves “F” 70 hex 0-1020 (x+46) / 92 + 0.5
Post-cleaning “G” 71 hex 0-1020 ((x div 4)² div 53) / 10 min. <1 minute = off
Lag time “H” 72 hex 0-1020
∆
p
“I” 73 hex 0-1020 X/204 V 0 ... 5 V = measuring
range
Inputs “J” 74 hex 0-31 2^0 = Enable
2^1 = Rapid cleaning
2^2 = Fault acknowledgement
2^3 = Pressure switch
2^4 = Test button
Program
version “K” 75 hex 16000 (x div 32) / 100 + 45
2^0 = 4 mA
2^1 = Pressure switch
2^2 = Pressure switch version
2^3 = Full cycle
2^4 = Controller
Current interval
time “L” 76 hex 20-2052 x / 4 s
Valve alarm “M” 77 hex 0-248 2^0-2^4 = Valve
2^5 = Interruption
2^6 = Overcurrent
2^7 = Pressure monitoring
Alarm threshold “N” 78 hex
High threshold “O” 79 hex
Low threshold “P” 80 hex
Display
selection “Q” 81 hex
Δ p measuring
range
“R” 82 hex
Δ p reference
“S” 83 hex
Δ p da
“T” 84 hex
Other
characters
32000
Unknown query
div = Integer division with no remainder