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ProMinent gamma/ X Supplementary Operating Instructions

ProMinent gamma/ X
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Component Length
Data n bytes
CRC check sum 2 byte
3.4.1.1 Slave address
The slave address can be set from 1 to 247.
Default: 20
3.4.1.2
Function codes
Tab. 28: 16 bit values
Function code Command Maximum register number in one
transaction
0x03 (3)
‘Read Holding Register’
125
0x06 (6)
‘Write Single Register’
1
0x10 (16)
‘Write Multiple Register’
123
0x17 (23)
‘Read / Write Multiple Register’
Read: 125 / Write: 121
Not all registers support all commands.
‘Read Holding Register’
can only be called up with function code 3.
Maximum message size
Excessive message sizes can disrupt the commu‐
nication.
The maximum message size for the ‘Read Holding
Register’ function is 200 byte with 19200 baud
(100 byte at 9600 baud or standard 400 byte at
38400 baud).
3.4.1.3 Data
The length and content of a data field depends on whether a
request or a response telegram is concerned:
Tab. 29: Request telegram
Length Content
2 byte Register
2 byte Number of registers to be trans‐
ferred
Supplementary Operating Instructions for Modbus RTU
45

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ProMinent gamma/ X Specifications

General IconGeneral
Protection classIP65
Max. Pressure25 bar
Power supply100-230 V, 50/60 Hz
Material of pump headPVDF, Stainless steel
Temperature range-10 °C to +45 °C
TypeDiaphragm dosing pump
Stroke lengthAdjustable
Stroke frequencymax. 180 strokes/min
Materials in contact with the mediumPVDF, PTFE, stainless steel
ControlManual, external control via contacts or 0/4-20 mA signal
Control OptionsExternal, potential-free contacts, 0/4-20 mA
Dosing Accuracy±2%