Extension Board for MODBUS on SMARTCON Control Unit
DS-ENGLISH-MODBUS-V2.01-2019.05.15 3 Setup
3 Setup
If MODBUS-RTU is activated, the following additional parameters will be visible in the control menu of your
ACTUSMART or SMARTCON-Device.
Each device connected to a MODBUS-RTU-network has to receive a unique address during setup.
Menu Item Subitem Options Explanation/Comments
P15.1 Modbus Modbus 0: not active MODBUS-RTU deactivated.
1: activated MODBUS-RTU activated.
P15.2 Modbus
Address
Channel A
0 bis 247 Set the bus address of the first/primary channel.
P15.3 Modbus
Address
Channel B
0 bis 247
Set the bus address of the second/secondary
channel. (only for option ”MODBUS-RTU
redundant”)
P15.4 Modbus Watchdogtime
0.0 – 10.0s
{0.0s}
Monitoring period of the togglebit. (Bit 7 in Master’s
command). This bit has to toggle in the specified
time or a buswatchdog error is detected. If
Watchdogtime is set to 0.0s, the watchdog is
deactiveted. Toggling the respective bit can now be
ommited.
P15.5 Modbus
Setpoint
Source
{0}: Standard
Setpoint specified by MODBUS-RTU (effective only
if positioner is activated).
1: Analog.
Setpoint specified by analogue signal. (effective
only if positioner is activated)
2: Bus/Analog.
Setpoint specified by MODBUS-RTU. In case of
bus error, setpoint specified by analogue signal.
(effective only if positioner is activated)
P15.6 Modbus Status 2 {0} Standard value for Status 2
1 - 2 Reserved for future use.
P15.7 Modbus Status 3 {0} Standard value for Status 3 (current event).
1 - 2 Reserved for future use.
P15.8 Modbus Status 4 {0} Standard value for Status 4
1 - 2 Reserved for future use.
5