KROHNE GFC 300 Modbus - Manual (Page 11)

MODBUS PROTOCOL
6
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GFC 300
www.krohne.com 03/2012 - 7312402100 - AD Modbus GFC 300 R01 en
6.5 Device identification on the Modbus interface
The device identification is according to the category "Regular" according to the Modbus
Application Protocol Specification V1.1a. Function code 43 / 14 (0x2B / 0x0E).
6.6 Coil registers
These function codes are used for access:
• 0x01 = read input coil
• 0x05 = write single coil
6.6.1 Converter controls
Modbus
object Id Object name / Description Type GDC Object
Number Content
0x00 VendorName 16 Byte ASCII
ASCII String
24730.32 KROHNE
0x01 ProductCode 10 Byte ASCII String 32519.32
(24731.32)
CG number (order code for the
converter assembly)
0x02 MajorMinorRevision 7 Byte ASCII String 24732.32 V1.1.xx
0x03 Vendor URL 32 Byte ASCII String 24733.32 www.krohne.com
0x04 ProductName 16 Byte ASCII String 24734.32 GFC 300
0x05 ModelName 16 Byte ASCII String 24735.32 Modbus
0x06 UserApplicationName 16 Byte ASCII String 24736.32 User tag, displayed on the header
of the local screen
Coil address Function
1000 Write 1 generates a cold start, write 0 is ignored
1001 Write 1 generates a warm start, write 0 is ignored
1002 Write 1 generates an error reset, write 0 is ignored