DL8000 Preset Instruction Manual
Revised February-2016
Communications Protocols
D-15
D.3 Communications Commands
This section details all commands the Modbus and DanLoad 6000
protocols support.
D.3.1 Modbus Commands
You use Modbus commands when using the register-mapped Modbus
protocol.
Table D-1
lists the executable commands available in the
Modbus protocol. These commands are called “executables” since they
force the DL8000 to perform certain kind of activities. The table also
specifies the operation mode in which each command is valid.
Table D-1. Modbus Executable Commands
Cmd No
(decimal)
Cmd No
(hex)
Command Name
Operating modes
[Auto/Manual]
1
1
Prompt Recipe
Auto
3
3
Prompt Additives
Auto
5
5
Timeout Operation
Auto
6
6
Authorize Transaction
Auto
7
7
End Transaction
Auto
8
8
Prompt Preset Volume
Auto
10
A
Authorize Batch
Auto
13
D
End Batch
Auto
14
E
Start/Restart Batch
Auto
15
F
Stop Batch
Auto
19
13
Clear Status
Auto
20
14
Reset Primary Alarms
Auto
28
1C
Display Message
Auto
41
29
Set Date and Time
Auto/Manual
48
30
Reset Unit
Auto/Manual
55
37
Change Operating Mode
Auto/Manual
56
38
Clear Display
Auto
61
3D
Report Alarm
Auto/Manual
The following sections describe all the commands supported in the
Modbus protocol, including the supporting parameters required for the
execution of each command, status flags changed during each
command, and exceptions checked.
When using Modbus, you use function codes to write the data for
respective parameters required for the execution of commands in
advance before issuing the command to the DL8000. Refer to the