S+S Regeltechnik Premasgard 814 Modbus Série Notice D'instruction page 22

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®
PREMASGARD
Function 06 Write Single Register & Function 16 Write Multiple Register
Register
4x0023 * k value
4x0024 Function type **
4x0025 * Auto zero time
4x0026 *
Height above sea level
Note * (Register 4x0023, 4x0025, 4x0026)
The computed coefficients for the volume flow display are not saved in the permanent memory
and are lost at zero voltage. They must be reset when the communication begins.
Selection of the function type ** (Register 4x0024)
Type 1:
Rosenberg, Comefri,
Gebhardt Nicotra
Type 2:
Ziehl-Abegg,
EBM Papst
Type 3:
Fläkt Woods
Function 08 Diagnostics
The following sub function codes are supported
Sub Function Parameter
Code
00 Echo of transmission data
(Loopback)
01 Restart Modbus
(Reset listen-only mode)
04 Activation listen-only mode
10 Delete counter
11 Counter bus telegrams
12 Counter communication errors
(Parity, CRC, frame errors, etc.)
13 Counter exception telegrams
14 Counter slave telegrams
15 Counter telegrams without answer
Function 17 Report Slave ID
Composition of answer telegram
Byte Nr. Parameter
00 Number of bytes
01 Slave ID (device type)
02 Slave ID (device class)
03 Status
04 Version number (release)
05 Version number (version)
06 Version number (index)
814x - Modbus | Telegrams
Parameter (display) Data Type
Unsigned 16 Bit 1...2000
Unsigned 8 Bit 1...3
Unsigned 16 Bit 15...1440
Signed 16 Bit –500...5000
3
= Volume flow [m /h]
= k factor
= Differential pressure of the static pressures [Pa]
= Air density [kg/m 3 ]
Data Type Answer
Echo data
Echo telegram
No answer
Echo telegram
Unsigned 16 Bit All valid bus telegrams
Unsigned 16 Bit Faulty bus telegrams
Unsigned 16 Bit Error counter
Unsigned 16 Bit Slave telegrams
Unsigned 16 Bit Broadcast messages (address 0)
Data Type Answer
Unsigned 8 Bit 6
Unsigned 8 Bit 10 = PREMASGARD
Unsigned 8 Bit 30 = PREMASGARD
Unsigned 8 Bit 255 = RUN, 0 = STOP
Unsigned 8 Bit 1...9
Unsigned 8 Bit 1...99
Unsigned 8 Bit 1
22
Value Range
1...2000
1...3
15...1440 min
–500...5000 m
® 814x
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/ PREMASREG
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