Siebert SX202 Série Manuel D'utilisation page 29

Features
Brillant LED display
The displays support the Modbus function 16 (0x10) Write Multiple Registers.
In the event of a bus error, minus signs appear in the display.
Time-out function
Parameterization via menu
Plug-in screw terminal strip
Menu display
The menu display represents a menu for unit parameterization (see 'Parameteri-
zation'). During normal operation ON~ne appears in the menu display as soon as
data arrive at the serial interface.
Status indicators
The status indicators (LEDs) on the back of the unit have the following function:
PWR The unit is supplied with voltage.
DATA Data transfer active (short flashing)
ERR Data transfer faulty (short flashing)
Control
The units must be parameterized before they can be controlled. Parameterization is
done in a menu (see 'Parameterization').
The units accept the Modbus RTU (Remote Terminal Unit) as an operation mode.
They are slaves in the sense of the Modbus over serial line specification and
implementation guide and support the code 16 (0x10) Write Multiple Registers
according to the Modbus application protocol specification.
The indications in the above mentioned documentation are to be observed. Both
documentations are available at 'www.modbus.org'.
For the Modbus control the RS485 interface is to be used. The RS232 interface is
determined for testing and not to be used as Modbus interface.
BAL SX202 MDB M 1.0 29