Despatch Protocol 3 Modbus Communications - Manual (Page 39)

Modbus Programming Manual A DDRESS LIST
Version 2 39
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2.9.5.2. Editing/Creating a profile header at a location (Command Code EP
or WP)
Creating Or Editing A Profile Header at a specific location - Request (to instrument)
Field Name Data Comments
(Dec) (Hex)
Unit Address A/R A/R The ID address of the instrument.
Function Code 23 17 Requires the multi read/write function.
Read Start Address High Byte 32 20
Read Start Address Low Byte 06 06
Read Quantity Of Registers High Byte 00 00
Read Quantity Of Registers Low Byte 01 01
Write Start Address High Byte 32 20
Write Start Address Low Byte 06 06
Write Quantity Of Registers High Byte 00 00
Write Quantity Of Registers Low Byte 21 15
Byte Count 42 2A 42dec / 0x2Ahex if creating a profile at a
specified location, or editing a profile.
Command Code High Byte 69 or 87 45 or 57 Edit Profile (EP) = 17744dec / 0x4550hex
Write Profile (WP) = 23352dec / 0x5750hex
Command Code Low Byte 80 50
Profile Number High Byte A/R A/R The profile number can be anything between
0 and 64
Profile Number Low Byte A/R A/R
Profile Name Character 1 A/R A/R
The ASCII codes equivalent to each of the
16 characters of the profile name, e.g. :
A = 65dec / 0x41, B = 66dec / 0x42 etc
a = 97dec / 0x61, b = 98dec / 0x62 etc
Note: Only valid characters from the
instruments supported character set
should be used
The space character (32dec / 0x20hex) is
used to fill any unused characters at the end
of the name
Characters 9 to 16 are not supported and
should be written to 32dec / 0x20hex
.
Profile Name Character 2 A/R A/R
Profile Name Character 3 A/R A/R
Profile Name Character 4 A/R A/R
Profile Name Character 5 A/R A/R
Profile Name Character 6 A/R A/R
Profile Name Character 7 A/R A/R
Profile Name Character 8 A/R A/R
Profile Name Character 9 32 20
Profile Name Character 10 32 20
Profile Name Character 11 32 20
Profile Name Character 12 32 20
Profile Name Character 13 32 20
Profile Name Character 14 32 20
Profile Name Character 15 32 20
Profile Name Character 16 32 20
Profile Start Signal High Byte 00 00 0 = No delay, 1 = After delay, 2 = At
Time/day
Profile Start Signal Low Byte A/R A/R
Profile Start Time (Byte 4 - High)
Floating point number
Profile Start Time (Byte 3)
Profile Start Time (Byte 2)
Profile Start Time (Byte 1 - Low)
Profile Start Day High Byte 00 00 1 = Monday, 2 = Tuesday, 3 = Wednesday,
4 = Thursday, 5 = Friday, 6 = Saturday,
7 = Sunday, 8 = Monday to Friday,
9 = Monday to Saturday,
10 = Saturday And Sunday, 11= All Week
Profile Start Day Low Byte A/R A/R
Profile Starting Setpoint High 00 00 1 = Current Process Variable Value