User Manual
Universal Serial/PROFIBUS DP Gateway
GT200-DP-RS
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Note:
Without control module, the Modbus commands are sent automatically, according to the “
Polls
” and “
” of the GT200-DP-RS device properties in chapter 7.2.1.
Control Module
Number of Commands Controlled
Length of Control Bytes
Control (8 Commands)
8
1 byte
Control (16 Commands)
16
2 bytes
Control (24 Commands)
24
3 bytes
Control (32 Commands)
32
4 bytes
Control (40 Commands)
40
5 bytes
Control (48 Commands)
48
6 bytes
The control module should be added above the command modules to be controlled. The commands above the
control module or exceeds the range are not controlled by the control module.
Each bit of the control module corresponds to the controlling state of a command below.
Value of Bit
Control Bit Description
0
Disable the command.
1
Enable the command.
For example:
Add a “Control (8 Commands)” module above some commands. Only the commands on the slot 3 to slot 10 will
be controlled by this module. Assume that the data value of this control module is “87” in HEX, which is
“10000111” in binary. Then the commands on slot 3, 4, 5 and 10 are enabled, while the commands on slot 6, 7, 8
and 9 are disabled. The commands on slot 1 and 11 are always enabled.
Status Module
As a Modbus master, the GT200-DP-RS has a functional module “Status Module” to indicate the status of the
Modbus commands.
