51
Protocol Description
If you select Modbus RTU Slave:
l
Data Bits is set as 8 by default.
l
There are two more options to configure:
Slave ID
and
Mapping
.
If the Mapping is empty, you must add a mapping
table first. See "Adding a Modbus Slave mapping
table" on page 1 for more information.
Modbus
RTU
Master
The controller acts as the Modbus Master and used for
communication between The controller and third-party
Modbus Slave devices, for example I/O modules.
If you select Modbus RTU Master, Data Bits is set as 8
by default.
Modbus
ASCII
Slave
The controller acts as the Modbus Slave and used for
communication between:
l
Controller and SCADA
l
Controller and third-party Modbus Master
If you select Modbus ASCII Slave, you must configure
two more options:
Slave ID
and
Mapping
. If the Mapping
is empty, you must add a mapping table first. See
"Adding a Modbus Slave mapping table" on page 1 for
more information.
Modbus
ASCII
Master
The controller acts as the Modbus Master and used for
communication between The controller and third-party
Modbus Slave devices, for example: I/O modules.
User
Defined
User Defined protocol.
When you select this option, the
Delimiter Mode
(Optional)
panel appears including three settings:
Read-
interval Timeout (ms)
,
Max Length (Bytes)
and
End
Delimiter (Hex)
. You can configure them optionally to
validate if a data frame is sent completely.
l
Read-interval Timeout (ms)
: The interval between the
last data packet sent and the first keepalive probe,
ranging from 0 to 10000 (ms). If the interval
between the arrivals of any two bytes exceeds this
Chapter 4 - Software
Summary of Contents for ControlEdge 2020 SC-TEPL01
Page 28: ...Figure 3 8 Single star topology 28 Chapter 3 Hardware ...
Page 40: ...40 Chapter 3 Hardware ...
Page 66: ...66 Chapter 4 Software ...
Page 114: ...114 Chapter 6 Communication ...
Page 126: ...126 Notices ...