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8.3.7.4 Modbus Slave Devices 1-8
For the correct functioning of the Modbus RTU Master, the Modbus RTU Master must know all Modbus slave
devices which are connected to the RS485 interface and the data which the devices must read must have been
defined. See also System Manual SICAM Q100, chapter 2.
NOTE
Modbus slave devices can only be parameterized if you selected the communication protocol Modbus RTU
Master.
You can parameterize up to 8 Modbus slave devices. They can be selected in the 2 groups Modbus slave
devices 1-4 and Modbus slave devices 5-8. The parameterization of the 8 Modbus slave devices is identical
and described only for the Modbus slave device 1 in the following.
NOTE
The parameterization sequences for the Modbus RTU Master and the Modbus Gateway are described in detail
in chapter 8.8.
8.3.7.4.1
Basic Settings
Default Settings and Setting Ranges of the Modbus Slave Device 1
Table 8-24
Parameter
Name
Activated
Device address/Unit ID
(Modbus slave device address)
Response timeout
Retry limit
SICAM Q100, 7KG95xx, Device Manual
E50417-H1040-C522-A4, Edition 03.2018
Settings of the Modbus slave device 1
Modbus slave device 1
no
1
10 (*10 ms)
2
Default Setting
Max. 31 characters
no
yes (= Activation of the option field):
The buttons for parameterization of the
mapping data are also activated for the
slave device here.
1 to 247
Address corresponds to the Unit ID
in the Modbus TCP telegram with simul-
taneous use of the Modbus Gateway
function.
1 to 6000 * 10 ms
(10 ms to 60 s)
0 to 10
(0 = no request retries)
Number of request retries after expira-
tion of Response timeout before a com-
munication error for the Modbus slave is
identified.
8 Operation at Use of a PC
8.3 Configuration of the Device
Setting Range
197
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